CY7C63413C, CY7C63513C, CY7C63613C Low-Speed

CY7C63413C
CY7C63513C
CY7C63613C
Low-Speed High Input/Output
1.5-Mbps USB Controller
Features
Functional Overview
■
Low-cost solution for low-speed applications with high I/O
requirements such as keyboards, keyboards with integrated
pointing device, gamepads, and many
others
■
USB Specification compliance
❐ Conforms to USB Specification, Versions 1.1 and 2.0
❐ Conforms to USB HID Specification, Version 1.1
❐ Supports one device address and three data endpoints
❐ Integrated USB transceiver
The CY7C63413C/513C/613C are 8-bit RISC one time
programmable (OTP) microcontrollers. The instruction set has
been optimized specifically for USB operations, although the
microcontrollers can be used for a variety of non-USB embedded
applications.
■
8-bit RISC microcontroller
❐ Harvard architecture
❐ 6-MHz external ceramic resonator
❐ 12-MHz internal CPU clock
■ Internal memory
❐ 256 bytes of RAM
❐ 8 Kbytes of EPROM
■
Interface can auto-configure to operate as PS2 or USB
■
I/O port
❐ The CY7C63413C/513C have 24 general purpose I/O
(GPIO) pins (Port 0 to 2) capable of sinking 7 mA per pin
(typical)
❐ The CY7C63613C has 12 GPIO pins (Port 0 to 2) capable of
sinking 7 mA per pin (typical)
❐ The CY7C63413C/513C have eight GPIO pins (Port 3) capable of sinking 12 mA per pin (typical) which can drive LEDs
❐ The CY7C63613C has four GPIO pins (Port 3) capable of
sinking 12 mA per pin (typical) which can drive LEDs
❐ Higher current drive is available by connecting multiple GPIO
pins together to drive a common output
❐ Each GPIO port can be configured as inputs with internal
pull-ups or open drain outputs or traditional CMOS outputs
❐ The CY7C63513C has an additional eight I/O pins on a DAC
port which has programmable current sink outputs
❐ Maskable interrupts on all I/O pins
■ 12-bit free-running timer with one microsecond clock ticks
■
Watch Dog Timer (WDT)
■
Internal Power-On Reset (POR)
■
Improved output drivers to reduce EMI
■
Operating voltage from 4.0 V to 5.5 V DC
■
Operating temperature from 0 to 70 °C
■
CY7C63413C available in 40-pin PDIP, 48-pin SSOP, 48-pin
SSOP - Tape reel, all in Pb-free versions for production
■
CY7C63513C available in 48-pin SSOP Pb-free packages for
production
■
CY7C63613C available in 24-pin SOIC Pb-free packages for
production
■
Industry-standard programmer support
Cypress Semiconductor Corporation
Document Number: 38-08027 Rev. *G
•
The CY7C63413C/513C features 32 GPIO pins to support USB
and other applications. The I/O pins are grouped into four ports
(Port 0 to 3) where each port can be configured as inputs with
internal pull-ups, open drain outputs, or traditional CMOS
outputs. The CY7C63413C/513C have 24 GPIO pins (Ports 0 to
2) that are rated at 7 mA typical sink current. The
CY7C63413C/513C has 8 GPIO pins (Port 3) that are rated at
12 mA typical sink current, which allows these pins to drive
LEDs.
The CY7C63613C features 16 GPIO pins to support USB and
other applications. The I/O pins are grouped into four ports (Port
0 to 3) where each port can be configured as inputs with internal
pull-ups, open drain outputs, or traditional CMOS outputs. The
CY7C63613C has 12 GPIO pins (Ports 0 to 2) that are rated at
7 mA typical sink current. The CY7C63613C has four GPIO pins
(Port 3) that are rated at 12 mA typical sink current, which allows
these pins to drive LEDs.
Multiple GPIO pins can be connected together to drive a single
output for more drive current capacity. Additionally, each I/O pin
can be used to generate a GPIO interrupt to the microcontroller.
Note the GPIO interrupts all share the same “GPIO” interrupt
vector.
The CY7C63513C features an additional 8 I/O pins in the DAC
port. Every DAC pin includes an integrated 14-KΩ pull-up
resistor. When a “1” is written to a DAC I/O pin, the output current
sink is disabled and the output pin is driven high by the internal
pull-up resistor. When a “0” is written to a DAC I/O pin, the
internal pull-up is disabled and the output pin provides the
programmed amount of sink current. A DAC I/O pin can be used
as an input with an internal pull-up by writing a “1” to the pin.
The sink current for each DAC I/O pin can be individually
programmed to one of sixteen values using dedicated Isink
registers. DAC bits [1:0] can be used as high current outputs with
a programmable sink current range of 3.2 to 16 mA (typical).
DAC bits [7:2] have a programmable current sink range of 0.2 to
1.0 mA (typical). Again, multiple DAC pins can be connected
together to drive a single output that requires more sink current
capacity. Each I/O pin can be used to generate a DAC interrupt
to the microcontroller and the interrupt polarity for each DAC I/O
pin is individually programmable. The DAC port interrupts share
a separate “DAC” interrupt vector.
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised March 21, 2014
CY7C63413C
CY7C63513C
CY7C63613C
The Cypress microcontrollers use an external 6-MHz ceramic
resonator to provide a reference to an internal clock generator.
This clock generator reduces the clock-related noise emissions
(EMI). The clock generator provides the 6 and 12-MHz clocks
that remain internal to the microcontroller.
The CY7C63413C/513C/613C are offered with single EPROM
options. The CY7C63413C, CY7C63513C and the
CY7C63613C have 8 Kbytes of EPROM.
These parts include Power-on Reset logic, a Watch Dog Timer,
a vectored interrupt controller, and a 12-bit free-running timer.
The Power-On Reset (POR) logic detects when power is applied
to the device, resets the logic to a known state, and begins
executing instructions at EPROM address 0x0000. The Watch
Dog Timer can be used to ensure the firmware never gets stalled
for more than approximately 8 ms. The firmware can get stalled
for a variety of reasons, including errors in the code or a
hardware failure such as waiting for an interrupt that never
occurs. The firmware should clear the Watch Dog Timer
periodically. If the Watch Dog Timer is not cleared for
approximately 8 ms, the microcontroller will generate a hardware
watch dog reset.
The microcontroller supports eight maskable interrupts in the
vectored interrupt controller. Interrupt sources include the USB
Bus-Reset, the 128-μs and 1.024-ms outputs from the
free-running timer, three USB endpoints, the DAC port, and the
GPIO ports. The timer bits cause an interrupt (if enabled) when
the bit toggles from LOW “0” to HIGH “1.” The USB endpoints
interrupt after either the USB host or the USB controller sends a
packet to the USB. The DAC ports have an additional level of
masking that allows the user to select which DAC inputs can
Document Number: 38-08027 Rev. *G
cause a DAC interrupt. The GPIO ports also have a level of
masking to select which GPIO inputs can cause a GPIO
interrupt. For additional flexibility, the input transition polarity that
causes an interrupt is programmable for each pin of the DAC
port. Input transition polarity can be programmed for each GPIO
port as part of the port configuration. The interrupt polarity can
be either rising edge (“0” to “1”) or falling edge (“1” to “0”).
The free-running 12-bit timer clocked at 1 MHz provides two
interrupt sources as noted above (128-μs and 1.024-ms). The
timer can be used to measure the duration of an event under
firmware control by reading the timer twice: once at the start of
the event, and once after the event is complete. The difference
between the two readings indicates the duration of the event
measured in microseconds. The upper four bits of the timer are
latched into an internal register when the firmware reads the
lower eight bits. A read from the upper four bits actually reads
data from the internal register, instead of the timer. This feature
eliminates the need for firmware to attempt to compensate if the
upper four bits happened to increment right after the lower 8 bits
are read.
The CY7C63413C/513C/613C include an integrated USB serial
interface engine (SIE) that supports the integrated peripherals.
The hardware supports one USB device address with three
endpoints. The SIE allows the USB host to communicate with the
function integrated into the microcontroller.
Finally, the CY7C63413C/513C/613C support PS/2 operation.
With appropriate firmware the D+ and D– USB pins can also be
used as PS/2 clock and data signals. Products utilizing these
devices can be used for USB and/or PS/2 operation with
appropriate firmware.
Page 2 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Contents
Pin Configuration ............................................................. 4
Pin Definitions .................................................................. 5
Programming Model ......................................................... 5
14-bit Program Counter (PC) ...................................... 5
8-bit Accumulator (A) ................................................... 5
8-bit Index Register (X) ............................................... 5
8-bit Program Stack Pointer (PSP) .............................. 5
8-bit Data Stack Pointer (DSP) .................................... 6
Address Modes ........................................................... 6
Instruction Set Summary ................................................. 7
Memory Organization ....................................................... 8
Program Memory Organization ................................... 8
Data Memory Organization ......................................... 9
I/O Register Summary ............................................... 10
Clocking .......................................................................... 11
Reset ................................................................................ 11
Power-On Reset (POR) ............................................. 11
Watch Dog Reset (WDR) .......................................... 11
General Purpose I/O Ports ............................................. 12
GPIO Interrupt Enable Ports ..................................... 13
GPIO Configuration Port ........................................... 13
DAC Port .......................................................................... 15
DAC Port Interrupts ................................................... 15
DAC Isink Registers .................................................. 15
USB Serial Interface Engine (SIE) ................................. 17
USB Enumeration ...................................................... 17
PS/2 Operation .......................................................... 17
USB Port Status and Control ..................................... 17
USB Device ..................................................................... 18
USB Ports .................................................................. 18
Device Endpoints (3) ................................................. 18
12-bit Free-running Timer .............................................. 20
Timer (LSB) ............................................................... 20
Timer (MSB) .............................................................. 20
Processor Status and Control Register ....................... 21
Interrupts ......................................................................... 21
Interrupt Vectors ........................................................ 22
Interrupt Latency ....................................................... 22
Truth Tables .................................................................... 23
Absolute Maximum Ratings .......................................... 27
DC Characteristics ......................................................... 27
Switching Characteristics .............................................. 28
Ordering Information ...................................................... 31
Ordering Code Definition ........................................... 31
Die Pad Locations .......................................................... 32
Package Diagrams .......................................................... 33
Acronyms ........................................................................ 35
Document Conventions ................................................. 35
Units of Measure. ...................................................... 35
Document History Page ................................................. 36
Sales, Solutions, and Legal Information ...................... 37
Worldwide Sales and Design Support ....................... 37
Products .................................................................... 37
PSoC® Solutions ...................................................... 37
Cypress Developer Community ................................. 37
Technical Support ..................................................... 37
.
Document Number: 38-08027 Rev. *G
Page 3 of 37
CY7C63413C
CY7C63513C
CY7C63613C
.
Pin Configuration
Logic Block Diagram
CY7C63513C
48-pin SSOP
6-MHz Ceramic Resonator
OSC
6 MHz
EPROM
4/6/8 Kbyte
USB
SIE
RAM
256 byte
D+ USB
PS/2
D–
PORT
Interrupt
Controller
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
VCC
Vss
P3[6]
P3[4]
P3[2]
P3[0]
P2[6]
P2[4]
P2[2]
P2[0]
P1[6]
P1[4]
P1[2]
P1[0]
DAC[6]
DAC[4]
P0[6]
P0[4]
P0[2]
P0[0]
DAC[2]
DAC[0]
XTALOUT
XTALIN
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
Watch Dog
Timer
Power-on
Reset
GPIO
PORT 0
GPIO
PORT 1
P1[0]
GPIO
PORT 2
P2[0]
GPIO
PORT 3
P3[0]
DAC
PORT
D+
D–
P3[7]
P3[5]
P1[3]
P1[1]
P0[7]
P0[5]
P0[3]
P0[1]
VPP
Vss
P0[7]
P1[7]
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
VCC
Vss
P3[6]
P3[4]
P3[2]
P3[0]
P2[6]
P2[4]
P2[2]
P2[0]
P1[6]
P1[4]
P1[2]
P1[0]
NC
NC
P0[6]
P0[4]
P0[2]
P0[0]
NC
NC
XTALOUT
XTALIN
24
VCC
2
3
4
5
6
7
8
9
10
11
12
23
22
21
20
19
18
17
16
15
14
13
VSS
P3[6]
P3[4]
P1[2]
P1[0]
P0[6]
P0[4]
P0[2]
P0[0]
XTALOUT
XTALIN
CY7C63413C
48-Pad Die
P2[7]
High Current
P3[7]
48
47
46
1
P3[5]
P3[7]
D–
12-bit
Timer
1
2
3
4
D–
P3[7]
P3[5]
P3[3]
P3[1]
P2[7]
P2[5]
P2[3]
P2[1]
P1[7]
P1[5]
P1[3]
P1[1]
NC
NC
P0[7]
P0[5]
P0[3]
P0[1]
NC
NC
VPP
Vss
CY7C63613C
24-pin SOIC
See Note 1
P0[0]
D+
Outputs
DAC[0]
CY7C63513C only
DAC[7]
P3[3]
P3[1]
P2[7]
P2[5]
P2[3]
P2[1]
P1[7]
P1[5]
P1[3]
P1[1]
DAC[7]
DAC[5]
P0[7]
P0[5]
P3[2]
P3[0]
P2[6]
P2[4]
P2[2]
P2[0]
P1[6]
P1[4]
P1[2]
P1[0]
DAC[6]
DAC[4]
P0[6]
P0[4]
0
P0[3]
P0[1]
DAC[3]
DAC[1]
VPP
0
D+
VCC
Vss
P3[6]
P3[4]
USB
Transceiver
8-bit Bus
12-MHz
8-bit
CPU
1
2
3
4
Vss
XTALIN
XTALOUT
DAC[0]
DAC[2]
P0[0]
P0[2]
12 MHz
D+
D–
P3[7]
P3[5]
P3[3]
P3[1]
P2[7]
P2[5]
P2[3]
P2[1]
P1[7]
P1[5]
P1[3]
P1[1]
DAC[7]
DAC[5]
P0[7]
P0[5]
P0[3]
P0[1]
DAC[3]
DAC[1]
VPP
Vss
CY7C63413C
48-pin SSOP
Note
1. CY7C63613C is not bonded out for all GPIO pins shown in Logic Block Diagram. Refer to pin configuration diagram for bonded out pins. See note on page 12 for
firmware code needed for unused GPIO pins.
Document Number: 38-08027 Rev. *G
Page 4 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Pin Definitions
Name
I/O
CY7C63413C
CY7C63513C CY7C63613C
40-Pin
48-Pin
Die
48-Pin
24-Pin
Description
D+, D–
I/O
1, 2
1, 2
1, 2
1, 2
1, 2
USB differential data; PS/2 clock and
data signals
P0[7:0]
I/O
15,26,16
25,17,24
18,23
17,32,18
31,19,30
20,29
17,32,18,
31,19,30,
20,29
17,32,18,31,
19,30,20,29
7, 18, 8, 17, 9,
16, 10, 15
GPIO port 0 capable of sinking 7 mA
(typical)
P1[3:0]
I/O
11,30,12,
29,13,28,
14,27
11,38,12,
37,13,36,
14,35
11,38,12,
37,13,36,
14,35
11,38,12,37,
13,36,14,35
5, 20, 6, 19
GPIO Port 1 capable of sinking 7 mA
(typical).
P2
I/O
7,34,8,
33,9,32,
10,31
7,42,8,
41,9,40,
10,39
7,42,8,
41,9,40,
10,39
7,42,8,41,9,
40,10,39
n/a
GPIO Port 2 capable of sinking 7 mA
(typical).
P3[7:4]
I/O
3,38,4,
37,5,36,
6,35
3,46,4,
45,5,44,
6,43
3,46,4,
45,5,44,
6,43
3,46,4,45,5,
44,6,43
3, 22, 4, 21
GPIO Port 3 capable of sinking 12 mA
(typical).
DAC
I/O
n/a
n/a
15,34,16,
33,21,28,
22,27
15,34,16,33,
21,28,22,27
n/a
DAC I/O Port with programmable
current sink outputs. DAC[1:0] offer a
programmable range of 3.2 to 16 mA
typical. DAC[7:2] have a programmable sink current range of 0.2 to 1.0
mA typical. DAC I/O Port not bonded
out on CY7C63613C. See note on
page 12 for firmware code needed for
unused pins.
XTALIN
IN
21
25
25
25
13
6-MHz ceramic resonator or external
clock input
22
26
26
26
14
6-MHz ceramic resonator
19
23
23
23
11
Programming voltage supply, ground
during operation
XTALOUT
VPP
OUT
VCC
40
48
48
48
24
Vss
20,39
24,47
24,47
24,47
12, 23
Programming Model
14-bit Program Counter (PC)
The 14-bit Program Counter (PC) allows access for up to 8
kilobytes of EPROM using the CY7C63413C/513C/613C
architecture. The program counter is cleared during reset, such
that the first instruction executed after a reset is at address
0x0000. This is typically a jump instruction to a reset handler that
initializes the application.
The lower eight bits of the program counter are incremented as
instructions are loaded and executed. The upper six bits of the
program counter are incremented by executing an XPAGE
instruction. As a result, the last instruction executed within a
256-byte “page” of sequential code should be an XPAGE
instruction. The assembler directive “XPAGEON” will cause the
assembler to insert XPAGE instructions automatically. As
instructions can be either one or two bytes long, the assembler
may occasionally need to insert a NOP followed by an XPAGE
for correct execution.
The program counter of the next instruction to be executed, carry
flag, and zero flag are saved as two bytes on the program stack
Document Number: 38-08027 Rev. *G
Voltage supply
Ground
during an interrupt acknowledge or a CALL instruction. The
program counter, carry flag, and zero flag are restored from the
program stack only during a RETI instruction.
Please note the program counter cannot be accessed directly by
the firmware. The program stack can be examined by reading
SRAM from location 0x00 and up.
8-bit Accumulator (A)
The accumulator is the general purpose, do everything register
in the architecture where results are usually calculated.
8-bit Index Register (X)
The index register “X” is available to the firmware as an auxiliary
accumulator. The X register also allows the processor to perform
indexed operations by loading an index value into X.
8-bit Program Stack Pointer (PSP)
During a reset, the Program Stack Pointer (PSP) is set to zero.
This means the program “stack” starts at RAM address 0x00 and
“grows” upward from there. Note the program stack pointer is
directly addressable under firmware control, using the MOV
Page 5 of 37
CY7C63413C
CY7C63513C
CY7C63613C
PSP,A instruction. The PSP supports interrupt service under
hardware control and CALL, RET, and RETI instructions under
firmware control.
During an interrupt acknowledge, interrupts are disabled and the
14-bit program counter, carry flag, and zero flag are written as
two bytes of data memory. The first byte is stored in the memory
addressed by the program stack pointer, then the PSP is
incremented. The second byte is stored in memory addressed
by the program stack pointer and the PSP is incremented again.
The net effect is to store the program counter and flags on the
program “stack” and increment the program stack pointer by two.
The Return From Interrupt (RETI) instruction decrements the
program stack pointer, then restores the second byte from
memory addressed by the PSP. The program stack pointer is
decremented again and the first byte is restored from memory
addressed by the PSP. After the program counter and flags have
been restored from stack, the interrupts are enabled. The effect
is to restore the program counter and flags from the program
stack, decrement the program stack pointer by two, and
re-enable interrupts.
The Call Subroutine (CALL) instruction stores the program
counter and flags on the program stack and increments the PSP
by two.
The Return From Subroutine (RET) instruction restores the
program counter, but not the flags, from program stack and
decrements the PSP by two.
8-bit Data Stack Pointer (DSP)
The Data Stack Pointer (DSP) supports PUSH and POP
instructions that use the data stack for temporary storage. A
PUSH instruction will pre-decrement the DSP, then write data to
the memory location addressed by the DSP. A POP instruction
will read data from the memory location addressed by the DSP,
then post-increment the DSP.
During a reset, the Data Stack Pointer will be set to zero. A PUSH
instruction when DSP equal zero will write data at the top of the
data RAM (address 0xFF). This would write data to the memory
area reserved for a FIFO for USB endpoint 0. In non-USB
applications, this works fine and is not a problem. For USB
applications, it is strongly recommended that the DSP is loaded
after reset just below the USB DMA buffers.
Address Modes
The CY7C63413C/513C/613C microcontrollers support three
addressing modes for instructions that require data operands:
data, direct, and indexed.
Document Number: 38-08027 Rev. *G
Data
The “Data” address mode refers to a data operand that is actually
a constant encoded in the instruction. As an example, consider
the instruction that loads A with the constant 0xE8:
■
MOV A,0E8h
This instruction will require two bytes of code where the first byte
identifies the “MOV A” instruction with a data operand as the
second byte. The second byte of the instruction will be the
constant “0xE8”. A constant may be referred to by name if a prior
“EQU” statement assigns the constant value to the name. For
example, the following code is equivalent to the example shown
above:
■
DSPINIT: EQU 0E8h
■
MOV A,DSPINIT
Direct
“Direct” address mode is used when the data operand is a
variable stored in SRAM. In that case, the one byte address of
the variable is encoded in the instruction. As an example,
consider an instruction that loads A with the contents of memory
address location 0x10:
■
MOV A, [10h]
In normal usage, variable names are assigned to variable
addresses using “EQU” statements to improve the readability of
the assembler source code. As an example, the following code
is equivalent to the example shown above:
■
buttons: EQU 10h
■
MOV A,[buttons]
Indexed
“Indexed” address mode allows the firmware to manipulate
arrays of data stored in SRAM. The address of the data operand
is the sum of a constant encoded in the instruction and the
contents of the “X” register. In normal usage, the constant will be
the “base” address of an array of data and the X register will
contain an index that indicates which element of the array is
actually addressed:
■
array: EQU 10h
■
MOV X,3
■
MOV A,[x+array]
This would have the effect of loading A with the fourth element
of the SRAM “array” that begins at address 0x10. The fourth
element would be at address 0x13.
Page 6 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Instruction Set Summary
MNEMONIC
operand
HALT
ADD A,expr
data
opcode
cycles
MNEMONIC
operand
00
7
NOP
01
4
INC A
acc
opcode
cycles
20
4
21
4
ADD A,[expr]
direct
02
6
INC X
x
22
4
ADD A,[X+expr]
index
03
7
INC [expr]
direct
23
7
ADC A,expr
data
04
4
INC [X+expr]
index
24
8
ADC A,[expr]
direct
05
6
DEC A
acc
25
4
ADC A,[X+expr]
index
06
7
DEC X
x
26
4
SUB A,expr
data
07
4
DEC [expr]
direct
27
7
SUB A,[expr]
direct
08
6
DEC [X+expr]
index
28
8
SUB A,[X+expr]
index
09
7
IORD expr
address
29
5
SBB A,expr
data
0A
4
IOWR expr
address
2A
5
SBB A,[expr]
direct
0B
6
POP A
2B
4
SBB A,[X+expr]
index
0C
7
POP X
2C
4
OR A,expr
data
0D
4
PUSH A
2D
5
OR A,[expr]
direct
0E
6
PUSH X
2E
5
OR A,[X+expr]
index
0F
7
SWAP A,X
2F
5
AND A,expr
data
10
4
SWAP A,DSP
AND A,[expr]
direct
11
6
MOV [expr],A
AND A,[X+expr]
index
12
7
MOV [X+expr],A
index
32
6
XOR A,expr
data
13
4
OR [expr],A
direct
33
7
direct
30
5
31
5
XOR A,[expr]
direct
14
6
OR [X+expr],A
index
34
8
XOR A,[X+expr]
index
15
7
AND [expr],A
direct
35
7
CMP A,expr
data
16
5
AND [X+expr],A
index
36
8
CMP A,[expr]
direct
17
7
XOR [expr],A
direct
37
7
CMP A,[X+expr]
index
18
8
XOR [X+expr],A
index
38
8
MOV A,expr
data
19
4
IOWX [X+expr]
index
39
6
MOV A,[expr]
direct
1A
5
CPL
3A
4
MOV A,[X+expr]
index
1B
6
ASL
3B
4
MOV X,expr
data
1C
4
ASR
3C
4
MOV X,[expr]
direct
1D
5
RLC
3D
4
reserved
1E
RRC
3E
4
XPAGE
1F
4
RET
3F
8
MOV A,X
40
4
DI
70
4
MOV X,A
41
4
EI
72
4
60
4
RETI
73
8
50-5F
10
MOV PSP,A
CALL
addr
JMP
addr
80-8F
5
JC
addr
C0-CF
5
CALL
addr
90-9F
10
JNC
addr
D0-DF
5
JZ
addr
A0-AF
5
JACC
addr
E0-EF
7
JNZ
addr
B0-BF
5
INDEX
addr
F0-FF
14
Document Number: 38-08027 Rev. *G
Page 7 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Memory Organization
Program Memory Organization
after reset
14-bit PC
Figure 1. Program Memory Space with Interrupt Vector Table
Address
0x0000
Program execution begins here after a reset
Document Number: 38-08027 Rev. *G
0x0002
USB Bus Reset interrupt vector
0x0004
128-μs timer interrupt vector
0x0006
1.024-ms timer interrupt vector
0x0008
USB address A endpoint 0 interrupt vector
0x000A
USB address A endpoint 1 interrupt vector
0x000C
USB address A endpoint 2 interrupt vector
0x000E
Reserved
0x0010
Reserved
0x0012
Reserved
0x0014
DAC interrupt vector
0x0016
GPIO interrupt vector
0x0018
Reserved
0x001A
Program Memory begins here
0x1FDF
(8K - 32 bytes)
8-KB PROM ends here (CY7C63413C, CY7C63513C, CY7C63613C)
Page 8 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Data Memory Organization
The CY7C63413C/513C/613C microcontrollers provide 256 bytes of data RAM. In normal usage, the SRAM is partitioned into four
areas: program stack, data stack, user variables and USB endpoint FIFOs as shown below:
after reset
8-bit PSP
Address
0x00
8-bit DSP
user
Program Stack begins here and grows upward
Data Stack begins here and grows downward
The user determines the amount of memory required
User Variables
0xE8
USB FIFO for Address A endpoint 2
0xF0
USB FIFO for Address A endpoint 1
0xF8
USB FIFO for Address A endpoint 0
Top of RAM Memory
Document Number: 38-08027 Rev. *G
0xFF
Page 9 of 37
CY7C63413C
CY7C63513C
CY7C63613C
I/O Register Summary
I/O registers are accessed via the I/O Read (IORD) and I/O Write
(IOWR, IOWX) instructions. IORD reads the selected port into
the accumulator. IOWR writes data from the accumulator to the
selected port. Indexed I/O Write (IOWX) adds the contents of X
to the address in the instruction to form the port address and
writes data from the accumulator to the specified port. Note that
specifying address 0 (e.g., IOWX 0h) means the I/O port is
selected solely by the contents of X.
Table 1. I/O Register Summary
Register Name
I/O Address
Read/Write
Port 0 Data
0x00
R/W
GPIO Port 0
Port 1 Data
0x01
R/W
GPIO Port 1
Port 2 Data
0x02
R/W
GPIO Port 2
Port 3 Data
0x03
R/W
GPIO Port 3
Port 0 Interrupt Enable
0x04
W
Interrupt enable for pins in Port 0
Port 1 Interrupt Enable
0x05
W
Interrupt enable for pins in Port 1
Port 2 Interrupt Enable
0x06
W
Interrupt enable for pins in Port 2
Port 3 Interrupt Enable
0x07
W
Interrupt enable for pins in Port 3
GPIO Configuration
0x08
R/W
GPIO Ports Configurations
USB Device Address A
0x10
R/W
USB Device Address A
EP A0 Counter Register
0x11
R/W
USB Address A, Endpoint 0 counter register
EP A0 Mode Register
0x12
R/W
USB Address A, Endpoint 0 configuration register
EP A1 Counter Register
0x13
R/W
USB Address A, Endpoint 1 counter register
EP A1 Mode Register
0x14
R/C
USB Address A, Endpoint 1 configuration register
EP A2 Counter Register
0x15
R/W
USB Address A, Endpoint 2 counter register
EP A2 Mode Register
0x16
R/C
USB Address A, Endpoint 2 configuration register
USB Status & Control
0x1F
R/W
USB upstream port traffic status and control register
Global Interrupt Enable
0x20
R/W
Global interrupt enable register
Endpoint Interrupt Enable
0x21
R/W
Timer (LSB)
0x24
R
Lower eight bits of free-running timer (1 MHz)
Timer (MSB)
0x25
R
Upper four bits of free-running timer that are latched
when the lower eight bits are read.
WDR Clear
0x26
W
DAC Data
0x30
R/W
Function
USB endpoint interrupt enables
Watch Dog Reset clear
DAC I/O[2]
DAC Interrupt Enable
0x31
W
Interrupt enable for each DAC pin
DAC Interrupt Polarity
0x32
W
Interrupt polarity for each DAC pin
DAC Isink
0x38-0x3F
W
0xFF
R/W
Processor Status & Control
One four bit sink current register for each DAC pin
Microprocessor status and control
Note
2. DAC I/O Port not bonded out on CY7C63613C. See note on page 12 for firmware code needed for unused GPIO pins.
Document Number: 38-08027 Rev. *G
Page 10 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Figure 2. Clock Oscillator On-chip Circuit
Clock Distribution
XTALOUT
clk1x
(to USB SIE)
clk2x
(to Microcontroller)
Clock
Doubler
XTALIN
30 pF
Clocking
The XTALIN and XTALOUT are the clock pins to the
microcontroller. The user can connect a low-cost ceramic
resonator or an external oscillator can be connected to these
pins to provide a reference frequency for the internal clock
distribution and clock doubler.
An external 6-MHz clock can be applied to the XTALIN pin if the
XTALOUT pin is left open. Please note that grounding the
XTALOUT pin is not permissible as the internal clock is effectively
shorted to ground.
Reset
The USB Controller supports three types of resets. All registers
are restored to their default states during a reset. The USB
Device Addresses are set to 0 and all interrupts are disabled. In
addition, the program stack pointer (PSP) and data stack pointer
(DSP) are set to 0x00. For USB applications, the firmware should
set the DSP below 0xE8 to avoid a memory conflict with RAM
dedicated to USB FIFOs. The assembly instructions to do this
are shown below:
30 pF
of approximately 1/2 full supply voltage. In addition to the normal
reset initialization noted under “Reset,” bit 4 (PORS) of the
Processor Status and Control Register is set to “1” to indicate to
the firmware that a Power-On Reset occurred. The POR event
forces the GPIO ports into input mode (high impedance), and the
state of Port 3 bit 7 is used to control how the part will respond
after the POR releases.
If Port 3 bit 7 is HIGH (pulled to VCC) and the USB I/O are at the
idle state (DM HIGH and DP LOW) the part will go into a
semi-permanent power down/suspend mode, waiting for the
USB I/O to go to one of Bus Reset, K (resume) or SE0. If Port 3
bit 7 is still HIGH when the part comes out of suspend, then a
128-μs timer starts, delaying CPU operation until the ceramic
resonator has stabilized.
If Port 3 bit 7 was LOW (pulled to VSS) the part will start a 96-ms
timer, delaying CPU operation until VCC has stabilized, then
continuing to run as reset.
Firmware should clear the POR Status (PORS) bit in register
0xFF before going into suspend as this status bit selects the
128-μs or 96-ms start-up timer value as follows: IF Port 3 bit 7 is
HIGH then 128-μs is always used; ELSE if PORS is HIGH then
96-ms is used; ELSE 128-μs is used.
Mov A, E8h
; Move 0xE8 hex into Accumulator
Watch Dog Reset (WDR)
Swap A,dsp
; Swap accumulator value into dsp register
The Watch Dog Timer Reset (WDR) occurs when the Most
Significant Bit (MSB) of the 2-bit Watch Dog Timer Register
transitions from LOW to HIGH. In addition to the normal reset
initialization noted under “Reset,” bit 6 of the Processor Status
and Control Register is set to “1” to indicate to the firmware that
a Watch Dog Reset occurred.
The three reset types are:
1. Power-On Reset (POR)
2. Watch Dog Reset (WDR)
3. USB Bus Reset (non hardware reset)
The occurrence of a reset is recorded in the Processor Status
and Control Register located at I/O address 0xFF. Bits 4, 5, and
6 are used to record the occurrence of POR, USB Reset, and
WDR respectively. The firmware can interrogate these bits to
determine the cause of a reset.
The microcontroller begins execution from ROM address 0x0000
after a POR or WDR reset. Although this looks like interrupt
vector 0, there is an important difference. Reset processing does
NOT push the program counter, carry flag, and zero flag onto
program stack. That means the reset handler in firmware should
initialize the hardware and begin executing the “main” loop of
code. Attempting to execute either a RET or RETI in the reset
handler will cause unpredictable execution results.
Power-On Reset (POR)
The Watch Dog Timer is a 2-bit timer clocked by a 4.096-ms
clock (bit 11) from the free-running timer. Writing any value to the
write-only Watch Dog Clear I/O port (0x26) will clear the Watch
Dog Timer.
In some applications, the Watch Dog Timer may be cleared in
the 1.024-ms timer interrupt service routine. If the 1.024-ms timer
interrupt service routine does not get executed for 8.192 ms or
more, a Watch Dog Timer Reset will occur. A Watch Dog Timer
Reset lasts for 2.048 ms after which the microcontroller begins
execution at ROM address 0x0000. The USB transmitter is
disabled by a Watch Dog Reset because the USB Device
Address Register is cleared. Otherwise, the USB Controller
would respond to all address 0 transactions. The USB
transmitter remains disabled until the MSB of the USB address
register is set.
Power-On Reset (POR) occurs every time the VCC voltage to the
device ramps from 0V to an internally defined trip voltage (Vrst)
Document Number: 38-08027 Rev. *G
Page 11 of 37
CY7C63413C
CY7C63513C
CY7C63613C
General Purpose I/O Ports
Ports 0 to 2 provide 24 GPI/O pins that can be read or written.
Each port (8 bits) can be configured as inputs with internal
pull-ups, open drain outputs, or traditional CMOS outputs.
Please note an open drain output is also a high-impedance (no
pull-up) input. All of the I/O pins within a given port have the same
configuration. Ports 0 to 2 are considered low current drive with
typical current sink capability of 7 mA.
The internal pull-up resistors are typically 7 kΩ. Two factors
govern the enabling and disabling of the internal pull-up
resistors: the port configuration selected in the GPI/O
Configuration register and the state of the output data bit. If the
GPI/O Configuration selected is “Resistive” and the output data
bit is “1,” then the internal pull-up resistor is enabled for that
GPI/O pin. Otherwise, Q1 is turned off and the 7-kΩ pull-up is
disabled. Q2 is “ON” to sink current whenever the output data bit
is written as a “0.” Q3 provides “HIGH” source current when the
GPI/O port is configured for CMOS outputs and the output data
bit is written as a “1”. Q2 and Q3 are sized to sink and source,
respectively, roughly the same amount of current to support
traditional CMOS outputs with symmetric drive.
Figure 3. Block Diagram of a GPIO Line
VCC
GPIO
CFG
mode
2 bits
Q1
Control
Data
Out
Latch
Internal
Data Bus
Q3
7 kΩ
GPIO
Pin
Port Write
Q2
ESD
Internal
Buffer
Control
Port Read
Interrupt
Enable
to Interrupt
Controller
.
Table 2. Port 0 Data
Addr: 0x00
Port 0 Data
P0[7]
P0[6]
P0[5]
P0[4]
P0[3]
P0[2]
P0[1]
P0[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 3. Port 1 Data
Addr: 0x01
Port 1 Data
P1[7]
P1[6]
P1[5]
P1[4]
P1[3]
P1[2]
P1[1]
P1[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Document Number: 38-08027 Rev. *G
Page 12 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Figure 4. Watch Dog Reset (WDR)
8.192 ms
to 14.336 ms
2.048 ms
At least 8.192 ms
since last write to WDT
WDR goes high
for 2.048 ms
Execution begins at
Reset Vector 0X00
Table 4. Port 2 Data
Addr: 0x02
Port 2 Data
P2[7]
P2[6]
P2[5]
P2[4]
P2[3]
P2[2]
P2[1]
P2[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 5. Port 3 Data
Addr: 0x03
Port 3 Data
P3[7]
P3[6]
P3[5]
P3[4]
P3[3]
P3[2]
P3[1]
P3[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 6. DAC Port Data
Addr: 0x30
DAC Port Data
Low current outputs
0.2 mA to 1.0 mA typical
High current outputs
3.2 mA to 16 mA typical
DAC[7]
DAC[6]
DAC[5]
DAC[4]
DAC[3]
DAC[2]
DAC[1]
DAC[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Port 3 has eight GPIO pins. Port 3 (8 bits) can be configured as
inputs with internal pull-ups, open drain outputs, or traditional
CMOS outputs. An open drain output is also a high-impedance
input. Port 3 offers high current drive with a typical current sink
capability of 12 mA. The internal pull-up resistors are typically 7
kΩ.
Note Special care should be exercised with any unused GPIO
data bits. An unused GPIO data bit, either a pin on the chip or a
port bit that is not bonded on a particular package, must not be
left floating when the device enters the suspend state. If a GPIO
data bit is left floating, the leakage current caused by the floating
bit may violate the suspend current limitation specified by the
USB Specification. If a ‘1’ is written to the unused data bit and
the port is configured with open drain outputs, the unused data
bit will be in an indeterminate state. Therefore, if an unused port
bit is programmed in open-drain mode, it must be written with a
‘0.’ Notice that the CY7C63613C will always require that data bits
P1[7:4], P2[7:0], P3[3:0] and DAC[7:0] be written with a ‘0’.
Document Number: 38-08027 Rev. *G
During reset, all of the bits in the GPIO to a default configuration
of Open Drain output, positive interrupt polarity for all GPIO
ports.
GPIO Interrupt Enable Ports
During a reset, GPIO interrupts are disabled by clearing all of the
GPIO interrupt enable ports. Writing a “1” to a GPIO Interrupt
Enable bit enables GPIO interrupts from the corresponding input
pin.
GPIO Configuration Port
Every GPIO port can be programmed as inputs with internal
pull-ups, open drain outputs, and traditional CMOS outputs. In
addition, the interrupt polarity for each port can be programmed.
With positive interrupt polarity, a rising edge (“0” to “1”) on an input pin causes an interrupt. With negative polarity, a falling edge
(“1” to “0”) on an input pin causes an interrupt. As shown in the
table below, when a GPIO port is configured with CMOS outputs,
interrupts from that port are disabled. The GPIO Configuration
Port register provides two bits per port to program these features. The possible port configurations are as shown in Table 11.
Page 13 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Table 7. Port 0 Interrupt Enable
Addr: 0x04
Port 0 Interrupt Enable
P0[7]
P0[6]
P0[5]
P0[4]
P0[3]
P0[2]
P0[1]
P0[0]
W
W
W
W
W
W
W
W
Table 8. Port 1 Interrupt Enable
Addr: 0x05
Port 1 Interrupt Enable
P1[7]
P1[6]
P1[5]
P1[4]
P1[3]
P1[2]
P1[1]
P1[0]
W
W
W
W
W
W
W
W
Table 9. Port 2 Interrupt Enable
Addr: 0x06
Port 2 Interrupt Enable
P2[7]
P2[6]
P2[5]
P2[4]
P2[3]
P2[2]
P2[1]
P2[0]
W
W
W
W
W
W
W
W
Table 10. Port 3 Interrupt Enable
Addr: 0x07
Port 3 Interrupt Enable
P3[7]
P3[6]
P3[5]
P3[4]
P3[3]
P3[2]
P3[1]
P3[0]
W
W
W
W
W
W
W
W
Table 11. Possible Port Configurations
Port Configuration bits
11
10
10
01
00
Pin Interrupt Bit
X
0
1
X
X
In “Resistive” mode, a 7-kΩ pull-up resistor is conditionally
enabled for all pins of a GPIO port. The resistor is enabled for
any pin that has been written as a “1.” The resistor is disabled on
any pin that has been written as a “0.” An I/O pin will be driven
high through a 7-kΩ pull-up resistor when a “1” has been written
to the pin. Or the output pin will be driven LOW, with the pull-up
disabled, when a “0” has been written to the pin. An I/O pin that
has been written as a “1” can be used as an input pin with an
integrated 7-kΩ pull-up resistor. Resistive mode selects a
negative (falling edge) interrupt polarity on all pins that have the
GPIO interrupt enabled.
In “CMOS” mode, all pins of the GPIO port are outputs that are
actively driven. The current source and sink capacity are roughly
the same (symmetric output drive). A CMOS port is not a
possible source for interrupts.
Driver Mode
Resistive
CMOS Output
Open Drain
Open Drain
Open Drain
Interrupt Polarity
–
disabled
disabled
–
+ (default)
direction. If a port’s associated Interrupt Mask bits are cleared,
those port bits are strictly outputs. If the Interrupt Mask bits are
set then those bits will be open drain inputs. As open drain inputs,
if their data output values are ‘1’ those port pins will be CMOS
inputs (HIGH Z output).
In “Open Drain” mode the internal pull-up resistor and CMOS
driver (HIGH) are both disabled. An I/O pin that has been written
as a “1” can be used as either a high-impedance input or a
three-state output. An I/O pin that has been written as a “0” will
drive the output LOW. The interrupt polarity for an open drain
GPIO port can be selected as either positive (rising edge) or
negative (falling edge).
During reset, all of the bits in the GPIO Configuration Register
are written with “0.” This selects the default configuration: Open
Drain output, positive interrupt polarity for all GPIO ports.
A port configured in CMOS mode has interrupt generation
disabled, yet the interrupt mask bits serve to control port
Table 12. GPIO Configuration Register
Addr: 0x08
7
6
Port 3
Port 3
Config Bit 1
Config Bit 0
W
W
5
Port 2
Config Bit 1
W
Document Number: 38-08027 Rev. *G
GPIO Configuration Register
4
3
Port 2
Port 1
Config Bit 0
Config Bit 1
W
W
2
Port 1
Config Bit 0
W
1
Port 0
Config Bit 1
W
0
Port 0
Config Bit 0
W
Page 14 of 37
CY7C63413C
CY7C63513C
CY7C63613C
DAC Port
Figure 5. Block Diagram of DAC Port
VCC
Q1
Data
Out
Latch
Internal
Data Bus
14 KΩ
DAC Write
DAC
I/O Pin
Isink
Register
4 bits
Isink
DAC
ESD
Internal
Buffer
Interrupt Logic
DAC Read
Interrupt
Enable
Interrupt
Polarity
to Interrupt
Controller
Table 13. DAC Port Data
Addr: 0x30
DAC Port Data
Low current outputs
0.2 mA to 1.0 mA typical
High current outputs
3.2 mA to 16 mA typical
DAC[7]
DAC[6]
DAC[5]
DAC[4]
DAC[3]
DAC[2]
DAC[1]
DAC[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
The DAC port provides the CY7C63513C with 8 programmable
current sink I/O pins. Writing a “1” to a DAC I/O pin disables the
output current sink (Isink DAC) and drives the I/O pin HIGH
through an integrated 14 Kohm resistor. When a “0” is written to
a DAC I/O pin, the Isink DAC is enabled and the pull-up resistor
is disabled. A “0” output will cause the Isink DAC to sink current
to drive the output LOW. The amount of sink current for the DAC
I/O pin is programmable over 16 values based on the contents
of the DAC Isink Register for that output pin. DAC[1:0] are the
two high current outputs that are programmable from a minimum
of 3.2 mA to a maximum of 16 mA (typical). DAC[7:2] are low
current outputs that are programmable from a minimum of 0.2
mA to a maximum of 1.0 mA (typical).
When a DAC I/O bit is written as a “1,” the I/O pin is either an
output pulled high through the 14 Kohm resistor or an input with
an internal 14 Kohm pull-up resistor. All DAC port data bits are
set to “1” during reset.
DAC Port Interrupts
A DAC port interrupt can be enabled/disabled for each pin
individually. The DAC Port Interrupt Enable register provides this
feature with an interrupt mask bit for each DAC I/O pin. Writing
Document Number: 38-08027 Rev. *G
a “1” to a bit in this register enables interrupts from the
corresponding bit position. Writing a “0” to a bit in the DAC Port
Interrupt Enable register disables interrupts from the
corresponding bit position. All of the DAC Port Interrupt Enable
register bits are cleared to “0” during a reset.
As an additional benefit, the interrupt polarity for each DAC pin
is programmable with the DAC Port Interrupt Polarity register.
Writing a “0” to a bit selects negative polarity (falling edge) that
will cause an interrupt (if enabled) if a falling edge transition
occurs on the corresponding input pin. Writing a “1” to a bit in this
register selects positive polarity (rising edge) that will cause an
interrupt (if enabled) if a rising edge transition occurs on the
corresponding input pin. All of the DAC Port Interrupt Polarity
register bits are cleared during a reset.
DAC Isink Registers
Each DAC I/O pin has an associated DAC Isink register to
program the output sink current when the output is driven LOW.
The first Isink register (0x38) controls the current for DAC[0], the
second (0x39) for DAC[1], and so on until the Isink register at
0x3F controls the current to DAC[7].
Page 15 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Table 14. DAC Port Interrupt Enable
Addr: 0x31
DAC Port Interrupt Enable
DAC[7]
DAC[6]
DAC[5]
DAC[4]
DAC[3]
DAC[2]
DAC[1]
DAC[0]
W
W
W
W
W
W
W
W
Table 15. DAC Port Interrupt Polarity
Addr: 0x32
DAC Port Interrupt Polarity
DAC[7]
DAC[6]
DAC[5]
DAC[4]
DAC[3]
DAC[2]
DAC[1]
DAC[0]
W
W
W
W
W
W
W
W
Table 16. DAC Port Isink
Addr: 0x38-0x3F
DAC Port Interrupt Polarity
Reserved
Document Number: 38-08027 Rev. *G
Isink Value
Isink[3]
Isink[2]
Isink[1]
Isink[0]
W
W
W
W
Page 16 of 37
CY7C63413C
CY7C63513C
CY7C63613C
USB Serial Interface Engine (SIE)
The SIE allows the microcontroller to communicate with the USB
host. The SIE simplifies the interface between the
microcontroller and USB by incorporating hardware that handles
the following USB bus activity independently of the
microcontroller:
6. The host sends a request for the Device descriptor using the
new USB address.
7. The USB Controller decodes the request and retrieves the
Device descriptor from the program memory.
8. The host performs a control read sequence and the USB
Controller responds by sending its Device descriptor over the
USB bus.
9. The host generates control reads to the USB Controller to
request the Configuration and Report descriptors.
10.The USB Controller retrieves the descriptors from its program
space and returns the data to the host over the USB.
■
Bit stuffing/unstuffing
■
Checksum generation/checking
■
ACK/NAK
■
Token type identification
PS/2 Operation
■
Address checking
PS/2 operation is possible with the CY7C63413C/513C/613C
series through the use of firmware and several operating modes.
The first enabling feature:
1. USB Bus reset on D+ and D− is an interrupt that can be disabled;
2. USB traffic can be disabled via bit 7 of the USB register;
3. D+ and D− can be monitored and driven via firmware as
independent port bits.
Firmware is required to handle the rest of the USB interface with
the following tasks:
■
Coordinate enumeration by responding to set-up packets
■
Fill and empty the FIFOs
■
Suspend/Resume coordination
■
Verify and select Data toggle values
USB Enumeration
The enumeration sequence is shown below:
1. The host computer sends a Setup packet followed by a Data
packet to USB address 0 requesting the Device descriptor.
2. The USB Controller decodes the request and retrieves its
Device descriptor from the program memory space.
3. The host computer performs a control read sequence and the
USB Controller responds by sending the Device descriptor
over the USB bus.
4. After receiving the descriptor, the host computer sends a
Setup packet followed by a Data packet to address 0
assigning a new USB address to the device.
5. The USB Controller stores the new address in its USB Device
Address Register after the no-data control sequence is
complete.
Bits 5 and 4 of the Upstream Status and Control register are
directly connected to the D+ and D− USB pins of the
CY7C63413C/513C/613C. These pins constantly monitor the
levels of these signals with CMOS input thresholds. Firmware
can poll and decode these signals as PS/2 clock and data.
Bits [2:0] defaults to ‘000’ at reset which allows the USB SIE to
control output on D+ and D−. Firmware can override the SIE and
directly control the state of these pins via these 3 control bits.
Since PS/2 is an open drain signaling protocol, these modes
allow all 4 PS/2 states to be generated on the D+ and D− pins
USB Port Status and Control
USB status and control is regulated by the USB Status and
Control Register located at I/O address 0x1F as shown in
Figure 17. This is a read/write register. All reserved bits must be
written to zero. All bits in the register are cleared during reset.
Table 17. USB Status and Control Register
Addr:0x1F
USB Status and Control Register
7
6
5
4
3
2
1
0
Reserved
Reserved
D+
D–
Bus Activity
Control
Bit 2
Control
Bit 1
Control
Bit 0
R
R
R/W
R/W
R/W
R/W
Document Number: 38-08027 Rev. *G
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The Bus Activity bit is a “sticky” bit that indicates if any non-idle
USB event has occurred on the USB bus. The user firmware
should check and clear this bit periodically to detect any loss of
bus activity. Writing a “0” to the Bus Activity bit clears it while
writing a “1” preserves the current value. In other words, the
firmware can clear the Bus Activity bit, but only the SIE can set
it. The 1.024-ms timer interrupt service routine is normally used
to check and clear the Bus Activity bit. The following table shows
how the control bits are encoded for this register.
Control
Bits
Control Action
000
Not forcing (SIE controls driver)
001
Force K (D+ HIGH, D– LOW)
010
Force J (D+ LOW, D– HIGH)
011
Force SE0 (D+ LOW, D– LOW)
100
Force SE0 (D− LOW, D+ LOW)
101
Force D− LOW, D+ HiZ
110
Force D− HiZ, D+ LOW
111
Force D− HiZ, D+ HiZ
cleared during a reset, setting the USB device address to zero
and marking this address as disabled. Figure 18 shows the
format of the USB Address Register.
Bit 7 (Device Address Enable) in the USB Device Address
Register must be set by firmware before the serial interface
engine (SIE) will respond to USB traffic to this address. The
Device Address in bits [6:0] must be set by firmware during the
USB enumeration process to an address assigned by the USB
host that does not equal zero. This register is cleared by a
hardware reset or the USB bus reset.
Device Endpoints (3)
The USB controller communicates with the host using dedicated
FIFOs, one per endpoint. Each endpoint FIFO is implemented as
8 bytes of dedicated SRAM. There are three endpoints defined
for Device “A” that are labeled “EPA0,” “EPA1,” and EPA2.”
All USB devices are required to have an endpoint number 0
(EPA0) that is used to initialize and control the USB device. End
Point 0 provides access to the device configuration information
and allows generic USB status and control accesses. End Point
0 is bidirectional as the USB controller can both receive and
transmit data.
The endpoint mode registers are cleared during reset. The EPA0
endpoint mode register uses the format shown in Table 19.
USB Device
USB Device Address A includes three endpoints: EPA0, EPA1,
and EPA2. End Point 0 (EPA0) allows the USB host to recognize,
set up, and control the device. In particular, EPA0 is used to
receive and transmit control (including set-up) packets.
Bits[7:5] in the endpoint 0 mode registers (EPA0) are “sticky”
status bits that are set by the SIE to report the type of token that
was most recently received. The sticky bits must be cleared by
firmware as part of the USB processing.
The endpoint mode registers for EPA1 and EPA2 do not use bits
[7:5] as shown in Table 20.
USB Ports
The USB Controller provides one USB device address with three
endpoints. The USB Device Address Register contents are
Table 18. USB Device Address Register
Addr:0x10
USB Device Address Register
Device
Address
Enable
Device
Address
Bit 6
Device
Address
Bit 5
Device
Address
Bit 4
Device
Address
Bit 3
Device
Address
Bit 2
Device
Address
Bit 1
Device
Address
Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 19. USB Device EPA0, Mode Register
Addr:0x12
USB Device EPA0, Mode Register
Endpoint 0
Set-up
Received
Endpoint 0
In
Received
Endpoint 0
Out
Received
Acknowledge
Mode
Bit 3
Mode
Bit 2
Mode
Bit 1
Mode
Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 20. USB Device Endpoint Mode Register
Addr: 0x14, 0x16
USB Device Endpoint Mode Register
Reserved
Reserved
Reserved
Acknowledge
Mode
Bit 3
Mode
Bit 2
Mode
Bit 1
Mode
Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Document Number: 38-08027 Rev. *G
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The ‘Acknowledge’ bit is set whenever the SIE engages in a
transaction that completes with an ‘ACK’ packet.
The ‘set-up’ PID status (bit[7]) is forced HIGH from the start of
the data packet phase of the set-up transaction, until the start of
the ACK packet returned by the SIE. The CPU is prevented from
clearing this bit during this interval, and subsequently until the
CPU first does an IORD to this endpoint 0 mode register.
Bits[6:0] of the endpoint 0 mode register are locked from CPU
IOWR operations only if the SIE has updated one of these bits,
which the SIE does only at the end of a packet transaction
(set-up... Data... ACK, or Out... Data... ACK, or In... Data... ACK).
The CPU can unlock these bits by doing a subsequent I/O read
of this register.
Firmware must do an IORD after an IOWR to an endpoint 0
register to verify that the contents have changed and that the SIE
has not updated these values.
While the ‘set-up’ bit is set, the CPU cannot write to the DMA
buffers at memory locations 0xE0 through 0xE7 and 0xF8
through 0xFF. This prevents an incoming set-up transaction from
conflicting with a previous In data buffer filling operation by
firmware.
The mode bits (bits [3:0]) in an Endpoint Mode Register control
how the endpoint responds to USB bus traffic. The mode bit
encoding is shown in Section .
The format of the endpoint Device counter registers is shown in
Table 21.
Bits 0 to 3 indicate the number of data bytes to be transmitted
during an IN packet, valid values are 0 to 8 inclusive. Data Valid
bit 6 is used for OUT and set-up tokens only. Data 0/1 Toggle bit
7 selects the DATA packet’s toggle state: 0 for DATA0, 1 for
DATA1.
Table 21. USB Device Counter Registers
Addr: 0x11, 0x13, 0x15
USB Device Counter Registers
Data 0/1
Toggle
Data Valid
Reserved
Reserved
Byte count
Bit 3
Byte count
Bit 2
Byte count
Bit 1
Byte count
Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Document Number: 38-08027 Rev. *G
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12-bit Free-running Timer
into a temporary register. When the firmware reads the upper 4
bits of the timer, it is actually reading the count stored in the
temporary register. The effect of this logic is to ensure a stable
12-bit timer value can be read, even when the two reads are
separated in time.
The 12-bit timer provides two interrupts (128 μs and 1.024 ms)
and allows the firmware to directly time events that are up to 4 ms
in duration. The lower 8 bits of the timer can be read directly by
the firmware. Reading the lower 8 bits latches the upper 4 bits
Timer (LSB)
Table 22. Timer Register
Addr: 0x24
Timer Register (LSB)
Timer
Bit 7
Timer
Bit 6
Timer
Bit 5
Timer
Bit 4
Timer
Bit 3
Timer
Bit 2
Timer
Bit 1
Timer
Bit 0
R
R
R
R
R
R
R
R
Timer
Bit 11
Timer
Bit 10
Timer
Bit 9
Timer
Bit 8
R
R
R
R
Timer (MSB)
Table 23. Timer Register
Addr: 0x25
Reserved
Timer Register (MSB)
Reserved
Reserved
Reserved
Figure 6. Timer Block Diagram
1.024-ms interrupt
128-μs interrupt
11
10
9
8
L3
L2
L1
L0
D3
D2
D1
7
D0
6
D7
4
5
D6
D5
3
D4
2
D3
1
D2
0
D1
1-MHz clock
D0
To Timer Register
8
Document Number: 38-08027 Rev. *G
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Processor Status and Control Register
Table 24. Processor Status and Control Register
Addr: 0xFF
Processor Status and Control Register
POR Default: 0x0101
WDC Reset: 0x41
7
6
5
4
3
2
1
0
IRQ
Pending
Watch Dog
Reset
USB Bus
Reset
Power-on
Reset
Suspend, Wait
for Interrupt
Interrupt
Mask
Single Step
Run
R
R/W
R/W
R/W
R/W
R
R/W
R/W
The “Run” (bit 0) is manipulated by the HALT instruction. When
Halt is executed, the processor clears the run bit and halts at the
end of the current instruction. The processor remains halted until
a reset (Power On or Watch Dog). Notice, when writing to the
processor status and control register, the run bit should always
be written as a “1.”
The “Single Step” (bit 1) is provided to support a hardware
debugger. When single step is set, the processor will execute
one instruction and halt (clear the run bit). This bit must be
cleared for normal operation.
The “Interrupt Mask” (bit 2) shows whether interrupts are
enabled or disabled. The firmware has no direct control over this
bit as writing a zero or one to this bit position will have no effect
on interrupts. Instructions DI, EI, and RETI manipulate the
internal hardware that controls the state of the interrupt mask bit
in the Processor Status and Control Register.
Writing a “1” to “Suspend, Wait for Interrupts” (bit 3) will halt the
processor and cause the microcontroller to enter the “suspend”
mode that significantly reduces power consumption. A pending
interrupt or bus activity will cause the device to come out of
suspend. After coming out of suspend, the device will resume
firmware execution at the instruction following the IOWR which
put the part into suspend. An IOWR that attempts to put the part
into suspend will be ignored if either bus activity or an interrupt
is pending.
The “Power-on Reset” (bit 4) is only set to “1” during a power on
reset. The firmware can check bits 4 and 6 in the reset handler
to determine whether a reset was caused by a Power On
condition or a Watch Dog Timeout. PORS is used to determine
suspend start-up timer value of 128 μs or 96 ms.
The “USB Bus Reset” (bit 5) will occur when a USB bus reset is
received. The USB Bus Reset is a singled-ended zero (SE0) that
lasts more than 8 microseconds. An SE0 is defined as the
condition in which both the D+ line and the D– line are LOW at
the same time. When the SIE detects this condition, the USB Bus
Reset bit is set in the Processor Status and Control register and
an USB Bus Reset interrupt is generated. Please note this is an
interrupt to the microcontroller and does not actually reset the
processor.
The “Watch Dog Reset” (bit 6) is set during a reset initiated by
the Watch Dog Timer. This indicates the Watch Dog Timer went
for more than 8 ms between watch dog clears.
Document Number: 38-08027 Rev. *G
The “IRQ Pending” (bit 7) indicates one or more of the interrupts
has been recognized as active. The interrupt acknowledge
sequence should clear this bit until the next interrupt is detected.
During Power-on Reset, the Processor Status and Control
Register is set to 00010001, which indicates a Power-on Reset
(bit 4 set) has occurred and no interrupts are pending (bit 7 clear)
yet.
During a Watch Dog Reset, the Processor Status and Control
Register is set to 01000001, which indicates a Watch Dog Reset
(bit 6 set) has occurred and no interrupts are pending (bit 7 clear)
yet.
Interrupts
All interrupts are maskable by the Global Interrupt Enable
Register and the USB End Point Interrupt Enable Register.
Writing a “1” to a bit position enables the interrupt associated with
that bit position. During a reset, the contents the Global Interrupt
Enable Register and USB End Point Interrupt Enable Register
are cleared, effectively disabling all interrupts.
Pending interrupt requests are recognized during the last clock
cycle of the current instruction. When servicing an interrupt, the
hardware will first disable all interrupts by clearing the Interrupt
Enable bit in the Processor Status and Control Register. Next,
the interrupt latch of the current interrupt is cleared. This is
followed by a CALL instruction to the ROM address associated
with the interrupt being serviced (i.e., the Interrupt Vector). The
instruction in the interrupt table is typically a JMP instruction to
the address of the Interrupt Service Routine (ISR). The user can
re-enable interrupts in the interrupt service routine by executing
an EI instruction. Interrupts can be nested to a level limited only
by the available stack space.
The Program Counter value as well as the Carry and Zero flags
(CF, ZF) are automatically stored onto the Program Stack by the
CALL instruction as part of the interrupt acknowledge process.
The user firmware is responsible for insuring that the processor
state is preserved and restored during an interrupt. The PUSH A
instruction should be used as the first command in the ISR to
save the accumulator value and the POP A instruction should be
used just before the RETI instruction to restore the accumulator
value. The program counter CF and ZF are restored and
interrupts are enabled when the RETI instruction is executed.
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Table 25. USB End Point Interrupt Enable Register
Addr: 0x21
USB End Point Interrupt Enable Register
7
6
5
4
3
2
1
0
Reserved
Reserved
Reserved
Reserved
Reserved
EPA2
Interrupt
Enable
EPA1
Interrupt
Enable
EPA0
Interrupt
Enable
R/W
R/W
R/W
Interrupt Vectors
The Interrupt Vectors supported by the USB Controller are listed in Table 26. Although Reset is not an interrupt, per se, the first
instruction executed after a reset is at PROM address 0x0000—which corresponds to the first entry in the Interrupt Vector Table.
Because the JMP instruction is 2 bytes long, the interrupt vectors occupy 2 bytes.
Table 26. Interrupt Vector Assignments
Interrupt Vector Number
ROM Address
Function
not applicable
0x0000
Execution after Reset begins here
1
0x0002
USB Bus Reset interrupt
2
0x0004
128-μs timer interrupt
3
0x0006
1.024-ms timer interrupt
4
0x0008
USB Address A Endpoint 0 interrupt
5
0x000A
USB Address A Endpoint 1 interrupt
6
0x000C
USB Address A Endpoint 2 interrupt
7
0x000E
Reserved
8
0x0010
Reserved
9
0x0012
Reserved
10
0x0014
DAC interrupt
11
0x0016
GPIO interrupt
12
0x0018
Reserved
Interrupt Latency
Timer Interrupt
Interrupt latency can be calculated from the following equation:
There are two timer interrupts: the 128-μs interrupt and the
1.024-ms interrupt. The user should disable both timer interrupts
before going into the suspend mode to avoid possible conflicts
between servicing the interrupts first or the suspend request first.
Interrupt Latency =(Number of clock cycles remaining in the
current instruction)
+ (10 clock cycles for the CALL instruction)
+ (5 clock cycles for the JMP instruction)
For example, if a 5 clock cycle instruction such as JC is being
executed when an interrupt occurs, the first instruction of the
Interrupt Service Routine will execute a min. of 16 clocks
(1+10+5) or a max. of 20 clocks (5+10+5) after the interrupt is
issued. Remember that the interrupt latches are sampled at the
rising edge of the last clock cycle in the current instruction.
USB Bus Reset Interrupt
The USB Bus Reset interrupt is asserted when a USB bus reset
condition is detected. A USB bus reset is indicated by a single
ended zero (SE0) on the upstream port for more than 8
microseconds.
Document Number: 38-08027 Rev. *G
USB Endpoint Interrupts
There are three USB endpoint interrupts, one per endpoint. The
USB endpoints interrupt after the either the USB host or the USB
controller sends a packet to the USB.
DAC Interrupt
Each DAC I/O pin can generate an interrupt, if enabled.The
interrupt polarity for each DAC I/O pin is programmable. A
positive polarity is a rising edge input while a negative polarity is
a falling edge input. All of the DAC pins share a single interrupt
vector, which means the firmware will need to read the DAC port
to determine which pin or pins caused an interrupt.
Please note that if one DAC pin triggered an interrupt, no other
DAC pins can cause a DAC interrupt until that pin has returned
to its inactive (non-trigger) state or the corresponding interrupt
enable bit is cleared. The USB Controller does not assign
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interrupt priority to different DAC pins and the DAC Interrupt
Enable Register is not cleared during the interrupt acknowledge
process.
GPIO Interrupt
Each of the 32 GPIO pins can generate an interrupt, if enabled.
The interrupt polarity can be programmed for each GPIO port as
part of the GPIO configuration. All of the GPIO pins share a
single interrupt vector, which means the firmware will need to
read the GPIO ports with enabled interrupts to determine which
pin or pins caused an interrupt.
Please note that if one port pin triggered an interrupt, no other
port pins can cause a GPIO interrupt until that port pin has
returned to its inactive (non-trigger) state or its corresponding
port interrupt enable bit is cleared. The USB Controller does not
assign interrupt priority to different port pins and the Port
Interrupt Enable Registers are not cleared during the interrupt
acknowledge process.
Truth Tables
Table 27. USB Register Mode Encoding
Mode
Disable
Nak In/Out
Encoding
Setup
In
Out
0000
ignore
ignore
ignore
accept
NAK
NAK
Forced from Set-up on Control endpoint, from modes other
than 0000
0001
Comments
Ignore all USB traffic to this endpoint
Status Out Only
0010
accept
stall
check
For Control endpoints
Stall In/Out
0011
accept
stall
stall
For Control endpoints
Ignore In/Out
0100
accept
ignore
ignore
For Control endpoints
ignore
ignore
always
Available to low speed devices, future USB spec
enhancements
accept
TX 0
stall
ignore
TX cnt
ignore
Isochronous Out
Status In Only
Isochronous In
0101
0110
0111
For Control Endpoints
Available to low speed devices, future USB spec
enhancements
Nak Out
1000
ignore
ignore
NAK
An ACK from mode 1001 --> 1000
Ack Out
1001
ignore
ignore
ACK
This mode is changed by SIE on issuance of ACK --> 1000
Nak Out - Status In
1010
accept
TX 0
NAK
An ACK from mode 1011 --> 1010
Ack Out - Status In
1011
accept
TX 0
ACK
This mode is changed by SIE on issuance of ACK --> 1010
Nak In
1100
ignore
NAK
ignore
An ACK from mode 1101 --> 1100
Ack In
1101
ignore
TX cnt
ignore
This mode is changed by SIE on issuance of ACK --> 1100
Nak In - Status Out
1110
accept
NAK
check
An ACK from mode 1111 --> 1110 NAck In - Status Out
Ack In - Status Out
1111
accept
TX cnt
Check
This mode is changed by SIE on issuance of ACK -->1110
The ‘In’ column represents the SIE’s response to the token type.
A disabled endpoint will remain such until firmware changes it,
and all endpoints reset to disabled.
Any Setup packet to an enabled and accepting endpoint will be
changed by the SIE to 0001 (NAKing). Any mode which indicates
the acceptance of a Setup will acknowledge it.
Most modes that control transactions involving an ending ACK
will be changed by the SIE to a corresponding mode which NAKs
follow on packets.
Document Number: 38-08027 Rev. *G
A Control endpoint has three extra status bits for PID (Setup, In
and Out), but must be placed in the correct mode to function as
such. Also a non-Control endpoint can be made to act as a
Control endpoint if it is placed in a non appropriate mode.
A ‘check’ on an Out token during a Status transaction checks to
see that the Out is of zero length and has a Data Toggle (DTOG)
of 1.
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Figure 7. Decode table forTable 28: “Details of Modes for Differing Traffic Conditions”
Properties of incoming packet
Encoding
Status bits
What the SIE does to Mode bits
PID Status bits
Interrupt?
End Point
Mode
End Point
Mode
3
2
1
0
Token
count
buffer
dval
DTOG
DVAL
COUNT
Setup
In
Out
ACK
3
2
1
0
Response
In
t
Setup
In
Out
The validity of the received data
The quality status of the DMA buffer
Acknowledge phase completed
The number of received bytes
Legend:
UC: unchanged
TX: transmit
x: don’t care
RX: receive
TX0: transmit 0-length packet
available for Control endpoint only
The response of the SIE can be summarized as follows:
1. the SIE will only respond to valid transactions, and will ignore
non-valid ones;
2. the SIE will generate IRQ when a valid transaction is
completed or when the DMA buffer is corrupted
3. an incoming Data packet is valid if the count is <= 10 (CRC
inclusive) and passes all error checking;
4. a Setup will be ignored by all non-Control endpoints (in appropriate modes);
5. an In will be ignored by an Out configured endpoint and vice
versa.
The In and Out PID status is updated at the end of a transaction.
Document Number: 38-08027 Rev. *G
The Setup PID status is updated at the beginning of the Data
packet phase.
The entire EndPoint 0 mode and the Count register are locked
to CPU writes at the end of any transaction in which an ACK is
transferred. These registers are only unlocked upon a CPU read
of these registers, and only if that read happens after the
transaction completes. This represents about a 1-μs window to
which to the CPU is locked from register writes to these USB
registers. Normally the firmware does a register read at the
beginning of the ISR to unlock and get the mode register
information. The interlock on the Mode and Count registers
ensures that the firmware recognizes the changes that the SIE
might have made during the previous transaction.
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Table 28. Details of Modes for Differing Traffic Conditions
End Point Mode
3
2
1
0
token
PID
count
buffer
dval
DTOG
DVAL
COUNT
Setup
Set End Point Mode
In
Out
ACK
3
0
2
1
0
0
0
1
response
int
Setup Packet (if accepting)
See Table 27
Setup
<= 10
data
valid
updates
1
updates
1
UC
UC
1
ACK
yes
See Table 27
Setup
> 10
junk
x
updates
updates
updates
1
UC
UC
UC
NoChange
ignore
yes
See Table 27
Setup
x
junk
invalid
updates
0
updates
1
UC
UC
UC
NoChange
ignore
yes
0
x
x
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
Disabled
0
0
0
Nak In/Out
0
0
0
1
Out
x
UC
x
UC
UC
UC
UC
UC
1
UC
NoChange
NAK
yes
0
0
0
1
In
x
UC
x
UC
UC
UC
UC
1
UC
UC
NoChange
NAK
yes
Ignore In/Out
0
1
0
0
Out
x
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
0
1
0
0
In
x
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
Stall In/Out
0
0
1
1
Out
x
UC
x
UC
UC
UC
UC
UC
1
UC
NoChange
Stall
yes
0
0
1
1
In
x
UC
x
UC
UC
UC
UC
1
UC
UC
NoChange
Stall
yes
Control Write
Normal Out/premature status In
1
0
1
1
Out
<= 10
data
valid
updates
1
updates
UC
UC
1
1
ACK
yes
1
0
1
1
Out
> 10
junk
x
updates
updates
updates
UC
UC
1
UC
1
NoChange
0
1
0
ignore
yes
1
0
1
1
Out
x
junk
invalid
updates
0
updates
UC
UC
1
UC
NoChange
ignore
yes
1
0
1
1
In
x
UC
x
UC
UC
UC
UC
1
UC
1
NoChange
TX 0
yes
yes
NAK Out/premature status In
1
0
1
0
Out
<= 10
UC
valid
UC
UC
UC
UC
UC
1
UC
NoChange
NAK
1
0
1
0
Out
> 10
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
0
1
0
Out
x
UC
invalid
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
0
1
0
In
x
UC
x
UC
UC
UC
UC
1
UC
1
NoChange
TX 0
yes
Stall
yes
Status In/extra Out
0
1
1
0
Out
<= 10
UC
valid
UC
UC
UC
UC
UC
1
UC
0
1
1
0
Out
> 10
UC
x
UC
UC
UC
UC
UC
UC
UC
0
NoChange
0
1
1
ignore
no
0
1
1
0
Out
x
UC
invalid
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
0
1
1
0
In
x
UC
x
UC
UC
UC
UC
1
UC
1
NoChange
TX 0
yes
ACK
yes
Control Read
Normal In/premature status Out
1
1
1
1
Out
2
UC
valid
1
1
updates
UC
UC
1
1
1
1
1
1
Out
2
UC
valid
0
1
updates
UC
UC
1
UC
0
NoChange
0
1
1
Stall
yes
1
1
1
1
Out
!=2
UC
valid
updates
1
updates
UC
UC
1
UC
0
0
1
1
Stall
yes
1
1
1
1
Out
> 10
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
1
1
1
Out
x
UC
invalid
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
1
1
1
In
x
UC
x
UC
UC
UC
UC
1
UC
1
1
1
1
0
ACK (back) yes
Nak In/premature status Out
1
1
1
0
Out
2
UC
valid
1
1
updates
UC
UC
1
1
1
1
1
0
Out
2
UC
valid
0
1
updates
UC
UC
1
UC
0
NoChange
0
1
1
ACK
Stall
yes
yes
1
1
1
0
Out
!=2
UC
valid
updates
1
updates
UC
UC
1
UC
0
0
1
1
Stall
yes
1
1
1
0
Out
> 10
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
1
1
0
Out
x
UC
invalid
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
1
1
0
In
x
UC
x
UC
UC
UC
UC
1
UC
UC
NoChange
NAK
yes
2
UC
valid
1
1
updates
UC
UC
1
1
NoChange
ACK
yes
Status Out/extra In
0
0
1
0
Out
Document Number: 38-08027 Rev. *G
Page 25 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Table 28. Details of Modes for Differing Traffic Conditions (continued)
0
0
1
0
Out
2
UC
valid
0
1
updates
End Point Mode
UC
UC
1
UC
PID
dval
0
0
1
1
Stall
yes
Set End Point Mode
3
2
1
0
token
count
buffer
0
0
1
0
Out
!=2
UC
0
0
1
0
Out
> 10
UC
x
UC
UC
UC
UC
UC
UC
UC
UC UC UC UC
ignore
no
0
0
1
0
Out
x
UC
invalid
UC
UC
UC
UC
UC
UC
UC
UC UC UC UC
ignore
no
0
0
1
0
In
x
UC
x
UC
UC
UC
UC
1
UC
UC
0
Stall
yes
1
valid
DTOG
DVAL
COUNT
Setup
In
Out
ACK
3
2
1
0
response
int
updates
1
updates
UC
UC
1
UC
0
0
1
1
Stall
yes
0
1
1
0
0
0
Out endpoint
Normal Out/erroneous In
1
0
0
1
Out
<= 10
data
valid
updates
1
updates
UC
UC
1
1
ACK
yes
1
0
0
1
Out
> 10
junk
x
updates
updates
updates
UC
UC
1
UC
NoChange
ignore
yes
1
0
0
1
Out
x
junk
invalid
updates
0
updates
UC
UC
1
UC
NoChange
ignore
yes
1
0
0
1
In
x
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
yes
NAK Out/erroneous In
1
0
0
0
Out
<= 10
UC
valid
UC
UC
UC
UC
UC
1
UC
NoChange
NAK
1
0
0
0
Out
> 10
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
0
0
0
Out
x
UC
invalid
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
0
0
0
In
x
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
Isochronous endpoint (Out)
0
1
0
1
Out
x
updates
updates
updates
updates
updates
UC
UC
1
1
NoChange
RX
yes
0
1
0
1
In
x
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
ignore
no
In endpoint
Normal In/erroneous Out
1
1
0
1
Out
x
UC
x
UC
UC
UC
UC
UC
UC
UC
1
1
0
1
In
x
UC
x
UC
UC
UC
UC
1
UC
1
NoChange
1
1
0
0
ACK (back) yes
NAK In/erroneous Out
1
1
0
0
Out
x
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
1
1
0
0
In
x
UC
x
UC
UC
UC
UC
1
UC
UC
NoChange
NAK
yes
Isochronous endpoint (In)
0
1
1
1
Out
x
UC
x
UC
UC
UC
UC
UC
UC
UC
NoChange
ignore
no
0
1
1
1
In
x
UC
x
UC
UC
UC
UC
1
UC
UC
NoChange
TX
yes
Document Number: 38-08027 Rev. *G
Page 26 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Absolute Maximum Ratings
Storage temperature .................................–65 °C to +150 °C
Ambient temperature with power applied ..... –0 °C to +70 °C
Supply voltage on VCC relative to VSS ..........–0.5 V to +7.0 V
DC input voltage ................................. –0.5 V to +VCC+0.5 V
DC voltage applied to outputs in High Z state –0.5 V to + VCC+0.5 V
Maximum output current into Port 0,1,2,3 and DAC[1:0] Pins60 mA
Maximum output current into DAC[7:2] Pins .............. 10 mA
Power dissipation ..................................................... 300 mW
Static discharge voltage ........................................> 2000V[3]
Latch-up current ................................................... > 200 mA
DC Characteristics Fosc = 6 MHz; operating temperature = 0 to 70 °C
Parameter
General
Operating voltage
VCC (1)
VCC (2)
Operating voltage
ICC1
VCC operating supply current
VCC = 4.35 V
ICC2
Supply current - suspend mode
ISB1
VPP
Programming voltage (disabled)
Resonator start-up interval
Tstart
Internal timer #1 interrupt period
tint1
tint2
Internal timer #2 interrupt period
Watch dog timer period
twatch
Input leakage current
Iil
Ism
Max ISS I/O sink current
Power-On Reset
VCC reset slew
tvccs
USB Interface
Static output HIGH
Voh
Vol
Static output LOW
Vdi
Differential input sensitivity
Differential input common mode range
Vcm
Single-ended receiver threshold
Vse
Cin
Transceiver capacitance
Hi-Z state data line leakage
Ilo
Bus pull-up resistance (VCC option)
Rpu
Rpu
Bus pull-up resistance (Ext. 3.3 V option)
Bus pull-down resistance
Rpd
General Purpose I/O Interface
Pull-up resistance
Rup
Vith
Input threshold voltage
Min
Max
Unit
Conditions
4.0
4.35
–
–
–
–0.4
–
128
1.024
8.192
–
–
5.5
5.25
40
15
30
0.4
256
128
1.024
14.33
1
60
V
V
mA
mA
μA
V
μs
μs
ms
ms
μA
mA
Non USB activity[4]
USB activity[5]
VCC = 5.5 V
–
Oscillator off, D– > Voh min
–
VCC = 5.0 V, ceramic resonator
–
–
–
Any pin
Cumulative across all ports[6]
0.001
200
ms
Linear ramp: 0 to 4.35 V[7, 8]
2.8
–
0.2
0.8
0.8
–
–10
7.35K
1.425
14.25
3.6
0.3
2.5
2.0
20
10
7.65
1.575
15.75
V
V
V
V
V
pF
μA
kΩ
kΩ
kΩ
15 k ± 5% Ω to Gnd [5]
–
|(D+)–(D–)|
9-1
–
–
0 V < Vin<3.3 V
7.5 kΩ ± 2% to VCC
1.5 kΩ ± 5% to 3.0–3.6 V
15 kΩ ± 5%
4.9 K
45%
9.1 K
65%
Ohms
VCC
–
All ports, LOW to HIGH edge
Notes
3. Qualified with JEDEC EIA/JESD22-A114-B test method.
4. Functionality is guaranteed of the VCC (1) range, except USB transmitter and DACs.
5. USB transmitter functionality is guaranteed over the VCC (2) range, as well as DAC outputs.
6. Total current cumulative across all Port pins flowing to VSS is limited to minimize Ground-Drop noise effects.
7. Port 3 bit 7 controls whether the parts goes into suspend after a POR event or waits 128 ms to begin running.
8. POR will re-occur whenever VCC drops to approximately 2.5 V.
Document Number: 38-08027 Rev. *G
Page 27 of 37
CY7C63413C
CY7C63513C
CY7C63613C
DC Characteristics Fosc = 6 MHz; operating temperature = 0 to 70 °C (continued)
Parameter
VH
Input hysteresis voltage
Sink current
Iol
Iol
Sink current
Ioh
Source current
DAC Interface
Rup
Pull-up resistance
DAC[7:2] sink current (0)[17]
Isink0(0)
Isink0(F)
DAC[7:2] sink current (F)[17]
Isink1(0)
DAC[1:0] sink current (0)[17]
Isink1(F)
DAC[1:0] sink current (F)[17]
Irange
Programmed Isink ratio: max/min
Ilin
Differential nonlinearity
tsink
Current sink response time
Tracking ratio DAC[1:0] to DAC[7:2]
Tratio
Min
6%
7.2
3.5
1.4
Max
12%
16.5
10.6
7.5
Unit
VCC
mA
mA
mA
8.0 K
0.1
0.5
1.6
8
4
–
–
14
20.0 K
0.3
1.5
4.8
24
6
0.5
0.8
21
Ohms
mA
mA
mA
mA
–
lsb
μs
–
Min
Max
Unit
Conditions
All ports, HIGH to LOW edge
Port 3, Vout = 1.0 V[9]
Port 0,1,2, Vout = 2.0 V [9]
Voh = 2.4 V (all ports 0,1,2,3)[9]
Note16
Vout = 2.0 VDC[10]
Vout = 2.0 DC[10]
Vout = 2.0 VDC[10]
Vout = 2.0 VDC[10]
Vout = 2.0 VDC[10,14]
Any pin[12]
Full scale transition
Vout = 2.0 V[13]
Switching Characteristics
Parameter
Description
Conditions
Clock
tCYC
Input Clock Cycle Time
165.0
168.3
ns
–
tCH
Clock HIGH Time
0.45
tCYC
–
ns
–
tCL
Clock LOW Time
0.45
tCYC
–
ns
–
USB Driver Characteristics
tr
Transition Rise Time
75
–
ns
CLoad = 50 pF[10, 11]
tr
Transition Rise Time
–
300
ns
CLoad = 600 pF [10, 11]
tf
Transition Fall Time
75
–
ns
CLoad = 50 pF[10, 11]
tf
Transition Fall Time
–
300
ns
CLoad = 600 pF[10, 11]
trfm
Rise/Fall Time Matching
80
125
%
tr/tf[10, 11]
Vcrs
Output Signal Crossover Voltage
1.3
2.0
V
Notes 10 and 11
USB Data Timing
tdrate
Low Speed Data Rate
1.4775
1.5225
Mbs
tdjr1
Receiver Data Jitter Tolerance
–75
75
ns
To Next Transition[15]
tdjr2
Receiver Data Jitter Tolerance
–45
45
ns
For Paired Transitions[15]
tdeop
Differential to EOP Transition Skew
–40
100
ns
Note 18
teopr1
EOP Width at Receiver
330
–
ns
Rejects as EOP[15]
teopr2
EOP Width at Receiver
675
–
ns
Accepts as EOP[15]
teopt
Source EOP Width
1.25
1.50
μs
–
tudj1
Differential Driver Jitter
–95
95
ns
To next transition, Figure 12 on page 30.
tudj2
Differential Driver Jitter
–150
150
ns
Notes
9. Functionality is guaranteed of the VCC (1) range, except USB transmitter and DACs.
10. USB transmitter functionality is guaranteed over the VCC (2) range, as well as DAC outputs.
11. Per Table 7-7 of revision 1.1 of USB specification, for CLOAD of 50–600 pF.
12. Measured as largest step size vs. nominal according to measured full scale and zero programmed values.
13. Tratio = Isink1[1:0](n)/Isink0[7:2](n) for the same n, programmed.
14. Irange: Isinkn(15)/ Isinkn(0) for the same pin.
15. Measured at crossover point of differential data signals.
16. Limits total bus capacitance loading (CLOAD) to 400 pF per section 7.1.5 of revision 1.1 of USB specification.
17. DAC I/O Port not bonded out on CY7C63613C. See note on page 12 for firmware code needed for unused pins.
18. Total current cumulative across all Port pins flowing to VSS is limited to minimize Ground-Drop noise effects.
Document Number: 38-08027 Rev. *G
Ave. Bit Rate (1.5 Mb/s ± 1.5%)
To paired transition, Figure 12 on page 30.
Page 28 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Figure 8. Clock Timing
.
tCYC
tCH
CLOCK
tCL
Figure 9. USB Data Signal Timing
Voh
tf
tr
D+
90%
Vcrs
90%
10%
Vol
10%
D−
Figure 10. Receiver Jitter Tolerance
TPERIOD
Differential
Data Lines
TJR1
TJR
TJR2
Consecutive
Transitions
N * TPERIOD + TJR1
Paired
Transitions
N * TPERIOD + TJR2
Document Number: 38-08027 Rev. *G
Page 29 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Figure 11. Differential to EOP Transition Skew and EOP Width
TPERIOD
Differential
Data Lines
Crossover Point
Extended
Crossover
Point
Diff. Data to
SE0 Skew
N * TPERIOD + TDEOP
Source EOP Width:
TEOPT
Receiver EOP Width: TEOPR1, TEOPR2
Figure 12. Differential Data Jitter
TPERIOD
Differential
Data Lines
Crossover
Points
Consecutive
Transitions
N * TPERIOD + TxJR1
Paired
Transitions
N * TPERIOD + TxJR2
Document Number: 38-08027 Rev. *G
Page 30 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Ordering Information
Ordering Code
EPROM
Size
Package
Name
Package Type
Operating
Range
CY7C63413C-PVXC
8 KB
SP48
48-pin Shrunk Small Outline Package
Commercial
CY7C63413C-PVXCT
8 KB
SP48
48-pin SSOP Pb-free Tape-reel
Commercial
48-pin SSOP Pb-free
Commercial
24-pin (300 mil) SOIC Pb-free
Commercial
24-pin (300 mil) SOIC Pb-free Tape-reel
Commercial
48-pin SSOP Pb-free Tape-reel
Commercial
CY7C63513C-PVXC
8 KB
SP48
CY7C63613C-SXC
8 KB
SZ24.3
CY7C63613C-SXCT
8 KB
SZ24.3
CY7C63513C-PVXCT
8 KB
SP48
Ordering Code Definition
CY 7C63 XXX XXX C/I (T)
Tape and reel
Temperature range:
Commercial/Industrial
Package type:
PVX: SSOP
SX: SOIC
Base part number
Marketing Code: 7C63
Company ID: CY = Cypress
Document Number: 38-08027 Rev. *G
Page 31 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Die Pad Locations
Table 29. DIe Pad Locations (in microns)
Pad #
Pin Name
X
Y
Pad #
Pin Name
X
Y
1
D+
1496.95
2995.00
48
VCC
1619.65
3023.60
2
D-
467.40
2995.00
47
VSS
1719.65
3023.60
3
Port3[7]
345.15
3023.60
46
Port3[6]
1823.10
3023.60
4
Port3[5]
242.15
3023.60
45
Port3[4]
1926.10
3023.60
5
Port3[3]
98.00
2661.25
44
Port3[2]
2066.30
2657.35
6
Port3[1]
98.00
2558.25
43
Port3[0]
2066.30
2554.35
7
Port2[7]
98.00
2455.25
42
Port2[6]
2066.30
2451.35
8
Port2[5]
98.00
2352.25
41
Port2[4]
2066.30
2348.35
9
Port2[3]
98.00
2249.25
40
Port2[2]
2066.30
2245.35
10
Port2[1]
98.00
2146.25
39
Port2[0]
2066.30
2142.35
11
Por1[7]
98.00
1134.25
38
Port1[6]
2066.30
1130.35
12
Por1[5]
98.00
1031.25
37
Port1[4]
2066.30
1027.35
13
Por1[3]
98.00
928.25
36
Port1[2]
2066.30
924.35
14
Por1[1]
98.00
825.25
35
Port1[0]
2066.30
821.35
15
DAC7
98.00
721.05
34
DAC6
2066.30
719.55
16
DAC5
98.00
618.05
33
DAC4
2066.30
616.55
17
Port0[7]
98.00
516.25
32
Port0[6]
2066.30
512.35
18
Port0[5]
98.00
413.25
31
Port0[4]
2066.30
409.35
19
Port0[3]
306.30
98.00
30
Port0[2]
1858.00
98.00
20
Port0[1]
442.15
98.00
29
Port0[0]
1718.30
98.00
21
DAC3
593.40
98.00
28
DAC2
1618.50
98.00
22
DAC1
696.40
98.00
27
DAC0
1513.50
98.00
23
VPP
824.25
98.00
26
XtalOut
1301.90
98.00
24
VSS
949.65
98.00
25
XtalIn
1160.50
98.00
Document Number: 38-08027 Rev. *G
Page 32 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Package Diagrams
Figure 13. 48-pin SSOP (300 Mils) Package Outline, 51-85061
51-85061 *F
Document Number: 38-08027 Rev. *G
Page 33 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Figure 14. 24-pin SOIC (0.615 × 0.300 × 0.0932 Inches) Package Outline, 51-85025
51-85025 *F
Document Number: 38-08027 Rev. *G
Page 34 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Acronyms
Acronym
Description
Acronym
Description
AC
Alternating current
PC
Program Counter
ADC
Analog-to-Digital Converter
PLL
Phase-Locked Loop
API
Application Programming Interface
POR
Power On Reset
CPU
Central Processing Unit
PPOR
Precision Power On Reset
CT
Continuous Time
PSoC®
Programmable System-on-Chip™
ECO
External Crystal Oscillator
PWM
Pulse Width Modulator
EEPROM
Electrically Erasable Programmable Read-Only
Memory
SC
Switched Capacitor
FSR
Full Scale Range
SRAM
Static Random Access Memory
GPIO
General Purpose I/O
ICE
In-Circuit Emulator
GUI
Graphical User Interface
ILO
Internal Low Speed Oscillator
HBM
Human Body Model
IMO
Internal Main Oscillator
LSb
Least-Significant Bit
I/O
Input/Output
LVD
Low Voltage Detect
IPOR
Imprecise Power On Reset
MSb
Most-Significant Bit
Document Conventions
Units of Measure
Symbol
Unit of Measure
Symbol
Unit of Measure
°C
degree Celsius
μW
microwatts
dB
decibels
mA
milliampere
fF
femto farad
ms
millisecond
Hz
hertz
mV
millivolts
KB
1024 bytes
nA
nanoampere
Kbit
1024 bits
ns
nanosecond
kHz
kilohertz
nV
nanovolts
kΩ
kilohm
Ω
ohm
MHz
megahertz
pA
picoampere
MΩ
megaohm
pF
picofarad
μA
microampere
pp
peak-to-peak
μF
microfarad
μH
microhenry
ps
picosecond
μs
microsecond
sps
samples per second
μV
μVrms
ppm
parts per million
microvolts
s
sigma: one standard deviation
microvolts root-mean-square
V
volts
Document Number: 38-08027 Rev. *G
Page 35 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Document History Page
Document Title: CY7C63413C/CY7C63513C/CY7C63613C, Low-Speed High Input/Output 1.5-Mbps USB Controller
Document Number: 38-08027
REV.
ECN NO.
Issue Date
Orig. of
Change
Description of Change
**
116224
06/12/02
DSG
Change from Spec number: 38-00754 to 38-08027
*A
237148
SEE ECN
KKU
Removed 24 pin package, CY7C63411/12, CY7C63511/12 and CY7C636XX
parts
Added Pb-free part numbers to section 20.0
Added USB Logo.
*B
418699
See ECN
TYJ
Part numbers updated with MagnaChip offerings
*C
2896245
03/19/10
XUT
Removed inactive parts (CY7C63413C-PXC and CY7C63413C-XC) from the
Ordering information.
Updated package diagrams.
*D
3057657
10/13/10
AJHA
Added “Not recommended for new designs” watermark in the PDF.
Updated template.
*E
3130046
01/18/2011
NXZ
Removed 40-pin PDIP package.
Added Ordering Code Definitions, Acronyms, and Document Conventions.
*F
4272762
02/05/2014
DEJO
Updated Package Diagrams:
spec 51-85061 – Changed revision from *D to *F.
spec 51-85025 – Changed revision from *D to *F.
Updated in new template.
Completing Sunset Review.
*G
4313900
03/21/2014
Document Number: 38-08027 Rev. *G
AKSL
Removed “Not recommended for new designs” watermark.
Added CY7C63613C-SXCT and CY7C63513C-PVXCT in Ordering Information.
Page 36 of 37
CY7C63413C
CY7C63513C
CY7C63613C
Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office
closest to you, visit us at Cypress Locations.
PSoC® Solutions
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psoc.cypress.com/solutions
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cypress.com/go/USB
cypress.com/go/wireless
© Cypress Semiconductor Corporation, 2002-2014. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of
any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for
medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as
critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems
application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign),
United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of,
and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress
integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without
the express written permission of Cypress.
Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not
assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where
a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer
assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
Document Number: 38-08027 Rev. *G
Revised March 21, 2014
All products and company names mentioned in this document may be the trademarks of their respective holders.
Page 37 of 37