User manual | IIC Device Overview

I

C Device Overview

4Q 2002

Steve Blozis

C International Product Manager

Agenda

• I

C Technology Overview

• I

C Product Overview

• Typical Applications

• Resources

Philips I 2 C products are produced by several business lines including Logic Product Group - Specialty Logic Product Line,

Standard Analog and Mobile Display Driver

Semiconductors

Product Family Overview - Specialty Logic

I 2 C (PCA and PCF) GTL and GTLP Bus Switch (CBT)

Translators (PTN) Memory Interface Clocks (PCK)

Semiconductors

I

C Bus Basics - Address and Data

µcon-

troller

I/O A/D

D/A

LCD RTC

µcon-

troller II

Data is transmitted at speeds of 100 kHz, 400kHz or

3.4 MHz.

SCL

SDA

Each device is addressed individually by software with a unique address that can be modified by hardware pins.

Write data

1010A

A

R/W

Master

S slave address W A data A data

A P

< n data bytes >

Read data transmitter

new function

New devices or functions can be easily ‘clipped on to an existing bus!

Slave receiver

S slave address R A data A data A P

Semiconductors receiver transmitter

< n data bytes > last data byte S = Start condition

R/W = read / write not

A = Acknowledge A = Not Acknowledge

P = Stop condition

Philips Semiconductor I

C Devices Overview

• TV Reception

• Radio Reception

• Audio Processing

• Infrared Control

• DTMF

• LCD display control

• Clocks/timers

• General Purpose I/O

• LED display control

• Bus Extension/Control

• A/D and D/A Converters

• EEPROM/RAM

• Hardware Monitors

• Microcontroller

I 2 C devices are broken down into 14 different categories

Philips offers over 400 different I

C devices

Semiconductors

EEPROM

RAM

Address pointer

256

Byte

RAM

Address pointer

POR

C-bus

256

E 2 interface

PROM interface

Sub address decoder

Supply

SDA

SCL

Real-Time Clock / Calendar

Counters: s, min, h, day, month, year

Oscillator / prescaler

32kHz

Alarm-, Timer-

Registers

(240 Byte RAM 8583)

POR

C-bus interface

SDA

SCL

Interrupt

Sub address decoder

LCD Display Control

Display size:

2 line by 12 characters

+ 120 icons

DDRAM

CGRAM

CGROM

Control logic

Bias voltage generator

Voltage multiplier

Column driver

Semiconductors

SDA

SCL

Supply

SDA

SCL

General Purpose I/O

POR

Interrupt

≠

C-bus interface

Sub address decoder alternative analog input configurations

Supply

Analog to Digital Converter (ADC)

POR

Oscillator, intern / extern

SDA

SCL

I 2 C-bus interface

Data registers

Sub address decoder

Analog reference

LCD Segment Control

Control logic

SDA

SCL

RAM

Display sizes 1 x 24 … 2 x 40… single chip: 4 x 40 ... 16 x 24

Supply

Bias voltage generator

Segment drivers

I

C Applications and Segments

Appliances

TV reception

Radio reception

Audio Processing

Infrared control

LCD display control

LED display control

TV Radio Audio Telephony Industrial Consumer Automotive Telecom Server/PC

•

• •

DTMF

General Purpose I/O

Hardware Monitors

Clocks/timers

• •

Bus Extension/Control

• •

A/D and D/A converters

• •

RAM

EEPROM

8-bit microprocessors

16-bit microprocessors

• •

•

I 2 C devices can be used in many different applications and segments

Semiconductors

I

C Bus Features

• Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL)

• Each device connected to the bus is software addressable by a unique address and simple master/slave relationships exist at all times; masters can operate as master-transmitters or as masterreceivers

• It’s a true multi-master bus including collision detection and arbitration to prevent data corruption if two or more masters simultaneously initiate data transfer.

• Serial, 8-bit oriented, bi-directional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400kbits/s in the Fast-mode, or up to 3.4 mbit/s in the High-speed mode.

• On-chip filtering (50 ns) rejects spikes on the bus data line to preserve data integrity.

• The number of ICs that can be connected to the same bus is limited only be a maximum bus capacitance of 400 pF.

Semiconductors

I

C Designer Benefits

• Functional blocks on the block diagram correspond with the actual ICs; designs proceed rapidly from block diagram to final schematic.

• No need to design bus interfaces because the I 2 C-bus interface is already integrated on-chip.

• Integrated addressing and data-transfer protocol allow systems to be completely software-defined.

• The same IC types can often be used in many different applications

• Design-time reduces as designers quickly become familiar with the frequency used functional blocks represented by I 2 C -bus compatible ICs

• ICs can be added to or removed from a system without affecting any other circuits on the bus

• Fault diagnosis and debugging are simple; malfunctions can be immediately traced

• Software development time can be reduced by assembling a library of reusable software modules.

Semiconductors

I

C Manufacturer Benefits

• The simple 2-wire serial I 2 C -bus minimized interconnections so ICs have fewer pins and there are not so many PCB tracks; result - smaller and less expensive PCBs

• The completely integrated I 2 C -bus protocol eliminates the need for address decoders and other ‘glue logic’

• The multi-master capability of the I 2 C -bus allows rapid testing/alignment of end-user equipment via external connections to an assembly-line

• Increases system design flexibility by allowing simple construction of equipment variants and easy upgrading to keep design up-to-date

• The I 2 C-bus is a de facto world standard that is implemented in over 1000 different ICs (Philips has > 400) and licensed to more than 70 companies

Semiconductors

I

C Product Characteristics

• Frequency Range

Typically 100 kHz operation with newer devices up to 400 kHz

• Operating Supply Voltage Range

Newer devices at 2.3 to 5.5 V or 3.0 to 3.6 V with 5 V tolerance

• Operating temperature range

Typically -40 to +85 ºC with some 0 to +70 ºC or 0 to +120 ºC

• Hardware address pins

Typically three (A

, A

) are provided to allow up to eight of the identical device on the same I 2 C bus but sometimes due to pin limitations there are fewer

• Package Offerings

Typically DIP, SO, SSOP, QSOP or

TSSOP packages are offered with newer devices offered in SO,

TSSOP and HVQFN (24 pin shown)

Semiconductors

I

C Bus Basics - Bus Operation

I 2 C bus hardware configuration

Typical bus communication waveforms

The I

C specification and other useful application information can be found on Philips Semiconductors I 2 C web site at www.semiconductors.philips.com/i2c

Semiconductors

I

C Bus Vs SMBus

The SMBus specification can be found on SMBus web site at www.SMBus.org

Semiconductors

Philips Semiconductor I

C Devices Overview

• General Purpose I/O

• LED display control

• Bus Extension/Control

• A/D and D/A Converters

• EEPROM/RAM

• Hardware Monitors

• Microcontrollers

I 2 C devices are broken down into 14 different categories

Semiconductors

Focus on Digital Tone Multi Frequency

DTMF/Modem/Musical Tone Generators

In addition to the standard DTMF frequencies the device can also provide:

• Twelve standard frequencies used in simplex modem applications for data rates from 300 to 1200 bits per second

• Two octaves of musical scales n steps of semitones

Semiconductors

PCD3311C/12C FEATURES

• DTMF, modem and musical tone generation

• DTMF used for telephone tone dialing

• Low baud rate modem

• Stabilized output voltage level

• On-chip filtering assures a very low total harmonic distortion in accordance with CEPT recommendations

• Latched inputs for data bus applications

• I²C-bus compatible

• Selection of parallel or serial (I²Cbus) data input (PCD3311C)

Philips Semiconductor I

C Devices Overview

• General Purpose I/O

• LED display control

• Bus Extension/Control

• A/D and D/A Converters

• EEPROM/RAM

• Hardware Monitors

• Microcontrollers

I 2 C devices are broken down into 14 different categories

Focus on LCD and RTC categories

Semiconductors

I

C LCD Display and Segment Drivers

LCD Display Control

Display size:

2 line by 12 characters +

120 icons

Column driver

DDRAM

CGRAM

CGROM

Control logic

Bias voltage generator

Voltage multiplier

SDA

SCL

Supply

The LCD Display driver is a complex device and is an example of how "complete" a system an I

C chip can be – it generates the LCD voltages, adjusts the contrast, temperature compensates, stores the messages, has CGROM and

RAM etc etc.

Display sizes single chip:

1 x 24 … 2 x 40…

4 x 40 ... 16 x 24

The LCD Segment driver is a less complex LCD driver

(e.g., just a segment driver).

LCD Segment Control

Control logic

SDA

SCL

RAM

Supply

Bias voltage generator

Segment drivers

Semiconductors

I

C Real Time Clock/Calendar

Real-Time Clock / Calendar

Counters: s, min, h, day, month, year

Oscillator / prescaler

32kHz

Alarm-, Timer- Registers

(240 Byte RAM 8583)

POR

C-bus interface

Interrupt

Sub address decoder

SDA

SCL

Philips offers four Real

Time Clocks, they are

PCF8593, PCF8583,

PCF8573 and PCF8563.

The RTC is used to provide absolute timing to devices on the I 2 C Bus.

The latest RTC is the PCF8563, it has the lowest current consumption in the range. Additionally, the PCF8583 has 240 bytes 'scratchpad' RAM integrated with the RTC.

Semiconductors

LCD Graphic and Character Drivers, LCD

Segment Drivers & Real Time Clocks

TYPE OF FUNCTION IN DEVICE

Vcc RANGE (V)

FEATURES

F R EQ ( kHz )

TEMP

PACKAGES

Description

OM4085

PCF2103

PCF2104

PCF2105

PCF2113

PCF2116

PCF2119

PCF8531

PCF8533

PCF8535

PCF8548

PCF8549

PCF8558

PCF8563

PCF8566

PCF8573

PCF8576C

PCF8577C

PCF8578

PCF8579

PCF8583

PCF8593

PCF8811

PCF8813

PCF8814

PCF8820

PCF8831

96 segment LCD driver

24 character LCD controller/driver

48 character LCD controller/driver

24 character + 120 icon LCD controller/driver

48 character LCD controller/driver

32 character LCD controller/driver

34 x 128 graphic LCD controller/driver

320 segment LCD driver

(65 + icon row) x 133 graphic LCD controller/driver

65 x 102 graphic LCD controller/driver

40 x 101 graphic LCD controller/driver ultra low power real time clock/calendar

96 segment LCD driver real time clock/calendar with power fail detector

160 segment LCD driver

64 segment LCD driver

384+ segment LCD driver

384+ segment LCD driver real tme clock/calendar with 240 x 8 bit RAM low power real time clock/calendar

80 x 128 graphic LCD controller/driver

(67 + icon row) x 102 graphic LCD controller/driver

80 x 96 graphic LCD controller/driver

67 x 101 4 greyscale graphic LCD controller/driver

160 x 128RGB 256 colour STN controller/driver chipset

PCF8832

160 x 128RGB 256 colour STN controller/driver chipset

λ λ λ λ λ

λ λ λ λ λ λ λ

λ λ λ λ λ

λ λ λ λ λ λ

λ λ λ λ λ λ λ

λ λ λ λ λ

λ λ λ λ λ λ

λ λ λ λ λ λ λ

λ λ λ λ

λ λ λ λ λ λ

λ λ λ λ λ λ λ

λ λ λ λ λ λ

λ λ λ λ λ λ λ λ

λ λ λ λ λ

1.1 λ

λ λ λ λ λ

λ λ λ λ λ λ λ

λ λ λ λ λ λ λ λ

λ 1.5 λ λ λ λ λ λ λ λ

λ λ λ λ λ λ λ λ λ

λ λ λ λ λ λ λ λ

λ λ λ λ λ λ λ

λ 1.5 λ λ λ λ λ λ λ

VSO40

λ λ

LQFP100

VSO40

LQFP64/VSO56

VSO40

LQFP64/VSO56

P T

Philips Semiconductor I

C Devices Overview

• TV Reception

• Radio Reception

• Audio Processing

• Infrared Control

• DTMF

• LCD display control

• Clocks/timers

I 2 C devices are broken down into 14 different categories

Semiconductors

Focus on general purpose categories

Supply

SDA

SCL

Quasi Output I

C I/O Expanders

General Purpose I/O

POR

I 2 C-bus interface

Sub address decoder

Interrupt

≠

alternative analog input configurations

KEY POINTS

-Transfers keyboard, ACPI Power switch, keypad, switch or other inputs to microcontroller via I 2 C bus

-Expand microcontroller via I 2 C bus where I/O can be located near the source or on various cards

-Use outputs to drive LEDs, sensors, fans, enable and other input pins, relays and timers

- Quasi outputs can be used as Input or Output without the use of a configuration register

-The PCA9501 has 6 address pins, allowing up to

64 devices to share the same I 2 C Bus.

-Application Note, AN469 GPIO Selection, discusses pros and cons of GPIOs

# of Outputs Interrupt

2Kbit

EEPROM

Interrupt and

2Kbit EEPROM

Quasi Output (20-25 ma sink and 100 uA source)

PCF8574/74A

PCF8575/75C

PCA9500

PCA9501

Semiconductors

Quasi Output I

C I/O Expanders - Registers

• To program the outputs

S Address W

OUTPUT

DATA

Multiple writes are possible during the same communication

• To read input values

S Address R

INPUT

DATA

Multiple reads are possible during the same communication

• Important to know

–

At power-up, all the I/O’s are HIGH; Only a current source to V

DD active is

– An additional strong pull-up resistors allows fast rising edges

– I/O’s should be HIGH before using them as Inputs

Semiconductors

True Output I

C I/O Expanders

Supply

SDA

SCL

General Purpose I/O

POR

Interrupt

≠

C-bus interface

Sub address decoder alternative analog input configurations

KEY POINTS

-Transfers keyboard, ACPI Power switch, keypad, switch or other inputs to microcontroller via I 2 C bus

-Use totem pole outputs to drive LEDs, sensors, fans, enable and other input pins, relays and timers

-Extra command byte needed for Input,

Output, Polarity and I/O Configuration

-Application Note, AN469 GPIO

Selection, discusses pros and cons of

GPIOs

Semiconductors

# of Outputs Reset Interrupt

2Kbit

EEPROM

True Output (20-25 ma sink and 10 mA source)

8 PCA9556/57 PCA9554/54A PCA9558

16 PCA9555 -

True Output I

C I/O Expanders - Registers

• To configure the device

Address W

CONFIG

DATA

POLARITY

DATA

No need to access

Configuration and

Polarity registers once programmed

• To program the outputs

S Address W

OUTPUT

DATA

Multiple writes are possible during the same communication

• To read input values

S Address W

S Address R

Semiconductors

INPUT

DATA

OUTPUT

DATA

Multiple reads are possible during the same communication

True Output I

C I/O Expanders - Example

Input

Reg#

Polarity

Reg#

Config

Reg#

Output

Reg#

Read

Semiconductors

Read/

Write

Read/

Write

Read/

Write

I/O’s

Low Power True Output I

C I/O Expanders

FEATURES

- Same true output structure and I

C address as the PCA9554/55 series

(0100AAA.)

- Metal mask change to disconnect the internal pull up resistors to reduce Istbl current to 1

µA maximum (from 750

µ A (8-bit) and

1.5 mA (16-bit)) for battery powered applications.

- 8-bit device in 16-pin package (SO,

TSSOP, HVQFN)

- 16-bit device in 24-pin package

(SO, TSSOP, HVQFN)

• PCA9534 8-Bit I

2 C and SMBus Low Power I/O port with Interrupt

• PCA9535 16-Bit I

2 C and SMBus Low Power I/O port with Interrupt

Semiconductors

Sampling Nov 02

I

C LED Blinkers

Supply

POR

SDA

SCL

C-bus interface

Sub address decoder

# of Outputs

Reset

≠

alternative analog input configurations

KEY POINTS

-I

C/SMBus is not tied up by sending repeated transmissions to turn LEDs on and then off to “blink” LEDs.

-Frees up the micro’s timer

-Continues to blink LEDs even when no longer connected to bus master

-Can be used to cycle relays and timers

Reset and POR

PCA9550

PCA9553

PCA9551

PCA9552

FEATURES

-25 mA open drain outputs

-Internal oscillator (+/- 10%)

-Two user definable blink rates and duty cycles adjustable between 40 Hz and 6.4 seconds in 256 steps

-Unused pins can be used for normal GPIO

-Hardware Reset pin and Power On Reset

(POR)

Semiconductors

Sampling, all will be released by end of 2002

PCA955x I

C LED Blinkers

)

0 0 0 0 0 0

256 - PWM0

256

ON = LED ON

OFF = LED OFF

OFF

PSC0 + 1

256 - PWM1

256

OFF

PSC1 + 1

Semiconductors

OFF

OFF ON

0 0 0

0 0 0 0 0 0

ON , OFF, BR1

BR2

I

C LED Dimmers

Supply

POR

SDA

SCL

C-bus interface

Sub address decoder

# of Outputs

Reset

≠

alternative analog input configurations

KEY POINTS

-Higher frequency rate allows LEDs to be dimmed by varying the duty cycle for

Red/Green/Blue color mixing applications.

- State machine modified to default to highest frequency at power on and duty cycle goes from 0% (off) to 99.6% (almost always on) for better dimming control.

Reset and POR

PCA9530

PCA9533

PCA9531

PCA9532

FEATURES

-25 mA open drain outputs

-Internal oscillator (+/- 10%)

-Two user definable blink rates and duty cycles adjustable between 160 Hz and 1.6 seconds in 256 steps

-Unused pins can be used for normal GPIO

-Hardware Reset pin and Power On Reset

(POR)

Semiconductors

Sampling in Dec 02

PCA953x I

C LED Dimmers

)

0 0 0 0 0 0

PWM

256

ON = LED ON

OFF = LED OFF

OFF

PSC

160

+ 1

PWM

256

OFF

PSC

160

+ 1

Semiconductors

OFF

OFF ON

0 0 0

0 0 0 0 0 0

ON , OFF, BR1

BR2

Semiconductors

4 Digit I

C LED Driver

FEATURES

-21 mA open drain outputs

- can drive 32 LEDs or 4 digits with decimal point (16 bits multiplexed twice)

- controls LED brightness in 7 steps of 3 mA.

- offered in SO and DIL package

- DIL dissipates 1 W, no series resistors are needed

- internal oscillator

- four different slave addresses

- V

CC range 4.5 V to 15 V

• SAA1064 4 Digit I

C LED Driver

I 2 C Bus

Hardware Input

Pins

MUX Select Pin

I

C Dip Switches

Non MUX Output Pin

Hardware Output

Pins

KEY POINTS

-Used for Speed Step™ notebook processor voltage changes when on AC/battery power or when in deep sleep mode

-Also used as replacement for jumpers or dip switches since there is no requirement to open the equipment cabinet to modify the jumpers/dip switch settings

FEATURES

-Non-volatile EEPROM retains values when the device is powered down

-Write or read EEPROM via I 2 C

-Use Mux select pin or I

C commands to select output values

PCA8550

PCA9559

PCA9560

PCA9561

Semiconductors

# of Non Volatile registers

# of register bits

# of hardware input pins

# of Muxed outputs

Non-muxed output

YES

2 C

I

C DIP Switches

C INTERFACE /

0 0 0

Semiconductors

I

C Multiplexers

I 2 C Bus

Interrupt Out

I 2 C

Controller

OFF

C Bus 0

C Bus 1

Interrupt 0

Interrupt 1

FEATURES

-Fan out main I 2 C/SMBus to multiple channels

-Select off or individual downstream channel

-I

C/SMBus commands used to select channel

-Power On Reset (POR) opens all channels

-Interrupt logic provides flag to master for system monitoring.

KEY POINTS

-Many specialized devices have only one I

C address and sometimes many are needed in the same system.

-Multiplexers allow the master to communicate to one downstream channel at a time but don’t isolate the bus capacitance

-Other Applications include sub-branch isolation.

# of Channels POR Only Interrupt Logic and POR

PCA9540

PCA9542

PCA9544

Semiconductors

I

C Multiplexers: Address Deconflict

I 2 C device

MASTER

Same I 2 C devices with same address

C device

PCA9540 I

C MULTIPLEXER

MASTER

The multiplexer allows to address 1 device then the other one

Semiconductors

I

C Multiplexers: Multi-card Application

Cards are identical

One card is selected at a time

PCA9544 collects Interrupt

Card 4

Card 3

Card 2

Card 1

PCA

9544

C bus 4

C bus 3

C bus 2

C bus 1

Reset

Int

MASTER

INT INT0

INT1

INT2

INT3

PCA

9554

INT

Alarm

Int

Sub

System

Int

Semiconductors

I

C Switches

C Bus

Reset

Interrupt Out

OFF

I 2 C

Controller

OFF

I 2 C Bus 0

I 2 C Bus 1

Interrupt 0

Interrupt 1

FEATURES

-Fan out main I

C/SMBus to multiple channels

-Select off or individual downstream channels one at a time, all at once or in any combination.

-I 2 C/SMBus commands used to select channel

-Hardware Reset pin or POR opens all channels

-Interrupt logic provides flag to master

KEY POINTS

-Switches allow the master to communicate to one channel or multiple downstream channels at a time but don’t isolate the bus capacitance

-Other Applications include: sub-branch isolation and I

C/SMBus level shifting

(1.8, 2.5, 3.3 or 5.0 V)

# of Channels Reset & POR Interrupt Logic and Reset & POR

PCA9546

PCA9548

PCA9543

PCA9545

Semiconductors

I

C Switches: Voltage Level Shifting

C device

Devices supplied by 5V Devices supplied by 3.3V

MASTER

C device

MASTER

PCA9543

SWITCH

Semiconductors

C device

5V bus

3.3V bus

I

C Bus Bi-Directional Voltage Level Translation

5 V

1.8 V

1.5 V

1.2 V

1.0 V

CORE

CPU I/O

GTL2002

GND

SREF

GREF

DREF

• Voltage translation between any voltage from 1.0 V to 5.0 V

• Bi-directional with no direction pin

• Reference voltage clamps the input voltage with low propagation delay

Semiconductors

Chipset I/O

– GTL2000 22-Bit

– GTL2002 2-Bit

– GTL2010 10-Bit

PCA9515 and PCA9516 Applications

PCA9515 and PCA9516 were designed to isolate up to 400 pF on each segment and uses an offset V

OL to allow bi-directional signaling without use of a direction pin. They were not designed to operate on the same bus since a low signal is not passed through two devices.

Semiconductors

PCA9518 Applications

The PCA9518 was design to allow expansion to an unlimited number of segments of 400 pF each.

P82B96 I

C Bus Buffer for many new applications !

SCL

SDA

Bi-directional data streams

Special logic levels

( I

C compatible)

P82B96

• Drive long cables/hot swap

- 100 m at 70 kHz

- 1 km at 30 kHz

• Multi-point applications

• Opto-isolate for safety

• Radio or IR links

• Send over other buses

- USB, CAN, RS485, RS232 etc.

through external device

Uni-directional data streams

• Increase noise immunity

Any data transmission paths and logic levels

Conventional CMOS logic levels (2-15V)

NO LIMIT to the number of connected devices !

P82B96

Re-combine to bi-directional I 2 C

Convert the logic signal levels back to I 2 C compatible

I 2 C currents (3mA) Higher current option, up to 30mA static sink

Semiconductors

Driving I

C bus signals long distances

Base Enclosure

Remote Control Enclosure

12V

3.3 -5V

12V

Long cables

SCL

3.3-5V

12V

SDA

P82B96

• Normal I2C logic levels (3.3 or 5 V)

• I

C currents (3mA)

Semiconductors

P82B96

• Conventional CMOS logic levels

(2-15V)

• Higher current option, up to

30mA static sink

• Normal I2C logic levels (3.3 or 5 V)

• I

C currents (3mA)

Changing I

C bus signals for multi-point applications!

3.3/5V

12V

Twisted-pair telephone wires,

USB or flat ribbon cables

Up to 15V logic levels, Include V

& GND

SCL

3.3/5

12V

NO LIMIT to the number of connected bus devices !

3.3V

SDA

P82B96

P82B96 P82B96

P82B96

SDA/SCL

SDA/SCL SDA/SCL

P82B96

SCL

SDA

Link parking meters and pay stations

Semiconductors

Link vending machines to save cell phone links

•--

Warehouse pick/pack systems

• Factory automation

•Access/alarm systems

• Video, LCD & LED display signs

•Hotel/motel management systems

• Monitor emergency lighting/exit signs

Changing I

C bus signals for Opto-isolation

3.3/5V

Vcc 1 Vcc 2

SCL

3.3/5V

P82B96

SDA

• Low cost Optos can be

directly driven (10-30mA)

4N36 Optos for ~5kHz

6N137 for 100kHz

HCPL-060L for 400 kHz

Semiconductors

• Controlling equipment on phone lines

• AC Mains switches, lamp dimmers, power supplies

• Isolating medical or industrial equipment

SCL

SDA

P82B715 I

C Bus Extender allows more bus capacitance

( I 2 C spec limit is 400pF )

Vcc

P82B715

Bi-directional I2C

Normal logic voltage levels, exactly I

I 2 C currents (3mA)

• Drive long cables

- up to 50 m at 85 kHz

• Multi-point applications

• Up to 3500pF capacitance wiring

• Up to 100 bus ICs in one system

• Increases noise immunity

Bi-directional signals

No change to logic voltage levels

Higher current sink up to 30mA static

P82B715

Bi-directional I 2 C

Convert the logic signal impedance level back to I

C compatible (3mA)

Semiconductors

P82B715 I

C Bus Extender drives long cables

( But I

C system spec limit remains 400pF ! )

Vcc

SCL

Vcc

Ly Sy

SCL

SDA

P82B715

Twisted-pair telephone wires

USB or flat ribbon cables

P82B715

I 2 C system capacitance load = long wiring capacitance divided by 10

Bi-directional I2C

Normal logic voltage levels, exactly I

I 2 C currents (3mA)

Bi-directional signals

No change to logic voltage levels

Higher current sink, up to 30mA static, reduces impedance to increase noise immunity

Bi-directional I 2 C

Converts the logic signal impedance level back to I

C compatible (3mA)

Semiconductors

I

C Bus Extender or I

C Bus Buffer ?

What’s the difference ?

Extender: P82B715

Buffer: PCA9515/16/18, P82B96

• Doesn’t change any logic voltage levels

Retains usual noise margins

Logic levels set only by I/Os, not by Vcc

- Only requirement is Vcc >= logic ‘hi’ level

• Uses special logic voltages on some I/Os

Necessary to prevent system latching

Input logic threshold fixed around 0.5 - 1V

- Outputs don’t pull right down to GND.

- These special I/Os have reduced noise margins

• No ‘isolation’ of connected devices

Sum of all the connected I

C bus capacitances normally remains at 400pF, can be exceptions

- Crashes buses if its Vcc is removed

• Fixed X10 current gain

Amplifies one direction only, and only when sinking

- Input ‘lo’ drive is 1/10 output sink current

- 3mA drive allows 30mA sink on extended bus

•

Always need at least two in a system

Normal I

C devices are not allowed on 30mA side

See AN255-02 for details

• Provides isolation of connected devices

- Bus loading is simply I/O pin capacitance, < 7pF

Will free all buses if its supply fails

•Current gain is essentially infinite (

=buffer !)

Input current < 1uA

- Adding external amplification to P82B96 is allowed so NO LIMIT to load (=devices) that can be driven

• Simple buffering needs only one chip

Using standard I 2 C bus impedances each side

• P82B96 offers X10 impedance conversion

Then use multiple buffers to convert back to I

Semiconductors

Parallel Bus to I

C Bus Controller

I 2 C Bus

Operation

Control

Bus Buffer

Chip Enable

Write Strobe

Read Strobe

Reset

Address Inputs

Interrupt Request

Data (8-bits)

FEATURES

-Provides both master and slave functions.

-Controls all the I

C bus specific sequences, protocol, arbitration and timing

-Internal oscillator (PCA9564 only)

-Hardware Reset pin and Power On Reset

(POR)

KEY POINTS

-Serves as an interface between most standard parallel-bus microcontrollers/ microprocessors and the serial I

C bus.

-Allows the parallel bus system to communicate with the I

C bus

Max I

C freq

Voltage range

PCF8584 4.5 - 5.5V

PCA9564 2.3 - 3.6V w/5V tolerance

90 kHz

360 kHz

Clock source Parallel interface

External

Internal

Slow

33 MHz - Fast

Semiconductors

PCA9564 is sampling

Analog to Digital Converter

Supply

POR

Oscillator, intern / extern

SDA

SCL

C-bus interface

Data registers

Sub address decoder

Analog reference

KEY POINTS

-Converts signals from digital to analog and analog to digital

FEATURES

-4 channel A to D

-1 channel D to A

-Internal oscillator

-Hardware Reset pin and

Power On Reset (POR)

Voltage range

PCF8591 2.5 - 5.5V w/5V tolerance

Semiconductors

Max I

C freq

100 kHz

Resolution

8-bit

I

C Serial CMOS RAM/EEPROMs

EEPROM

Supply

RAM

Address pointer

POR

Address pointer

POR

C-bus interface

SDA

SCL

256 x 8-bit RAM

256 x 8-byte (2 kbit)

Also PCF85102C-2 and PCF85103C-2

256

Byte

RAM

256

Byte

E 2 interface

PROM

Sub address decoder

128 x 8-byte (1 kbit) 512 x 8-byte (4 kbit)

FEATURES

-Wide voltage range of 2.5 to 5.5V

-1,000,000 read and write cycles

-10 year data retention

1024 x 8-byte (8 kbit) 2048 x 8-byte (16 kbit)

KEY POINTS

-I²C bus is used to read and write information to and from the memory

-Wide voltage range minimizes the number of

EEPROMs that need to be in inventory

Semiconductors

Remote

Sensor

I

C Hardware Monitors

C Temperature Monitor

High Accuracy Temp Monitor

Digital Temperature

Sensor and Thermal

Watchdog™

FEATURES

–High temperature accuracy

–Open drain interrupt output

Semiconductors

C Temperature and Voltage

Monitor

KEY POINTS

–Sense temperature and/or monitor voltage via I²C

–Remote sensor can be internal to microprocessor

Integrated I

C ASICs

Like PCA9559

C Bus

MUX Select

Output

Input

Like PCA9557

Like PCF8582C-2

2K EEPROM

Input

LED

Output

• PCA9558

, 5-bit Multiplexed/1-bit Latched 6-bit I

C EEPROM and Octal SMBus

Registered Interface with Integrated 256 Byte EEPROM (shown above)

• PCA9504A

, 56-pin TSSOP Glue Chip 4 for Pentium® III & 4 motherboards

• PCA9500

, 8-bit I

C/SMBus I/O Port with 256 Byte EEPROM

• PCA9501

, 8-bit I 2 C/SMBus I/O Port with 256 Byte EEPROM & Interrupt

FEATURES

-Integration of many functions into one device to help reduce part count, cost and board space requirements

Semiconductors

KEY POINTS

-Customer input is welcome on other possible combination devices

I

C Bus Basics - Simple Bus Arrangement

C++

100 kHz and 400 kHz

Microprocessor

Reset Interrupt

3.3 V

EEPROM

Keyboard

Semiconductors

I

C Bus Basics - Complex Bus Arrangement

100 kHz

Reset

Microprocessor

C++

EEPROM

Multiplexer

100 kHz and 400 kHz

Microprocessor

Reset Interrupt

3.3 V

Outputs

Voltage

Regulator

Module

5 V

EEPROM Bus Controller

Repeater

Keyboard

Semiconductors

Disable

Temp

Sensor

Temp

Sensor

Temp

Sensor

Temp

Sensor

5 V

3.3 V

2.5 V

1.8 V

Switch

LED Blinker

Slot or Gaming Machine Setup

Processor

PCA8584

PCA9564

P82B96

12 V to 5V Reg

LED Blinker

LEDs

P82B96

12 V to 5V Reg

I/O Expander

Motor Controller

Distribution Hub

-12 V +

Semiconductors

4-wire USB cable

SCL & 12 V on one wire pair and

SDA & GND on the other wire pair

P82B96

12 V to 5V Reg

LCD Display Driver

LCD Display

I2C 2002-1 Evaluation Board Kit

FEATURES

- Converts Personal Computer parallel port to I

C bus master

- Simple to use graphical interface for I

C commands

- Win-I2CNT software compatible with Windows 95, 98, ME, NT, XP and 2000

- Order kits at www.demoboard.com

Semiconductors

PCA9551 LED Blinkers Win-I2CNT Interface Screen

Select

LEDs mode

Device address

CC for PCA9551

Select blinking options Registers information

Semiconductors

Write and Read

Registers

I

C Sample Kit

The I 2 C Sample Kit consists of eight different I 2 C devices in tape inserted into the I 2 C Sample Kit box with an informative insert.

Devices include three each of the

GTL2010PW, P82B96TD, PCA9551D,

PCA9545D, PCA9555D, PCA9557D,

PCA9515D and PCA9501D

Request the I 2 C Sample Kit or individual device samples from your Philips

Sales Representative or directly from [email protected]

Semiconductors

Technical Support Information

Application Notes

AN250 PCA8550 4-Bit Multiplexed/1-Bit Latched 5-Bit I 2 C E2PROM

AN255 I

C and SMBus Hubs, Buffers, and Repeaters

AN256 PCA9500/PCA9501 Provides Simple Card Maintenance and

Control Using I

AN444 P82B715 I 2 C Bus Buffer

AN469 I 2 C I/O Port Selection

AN460 Introducing the P82B96 I 2 C Bus Buffer

AN262 PCA954X Multiplexers and Switches

AN264 I 2 C Devices for LED Display Control

AN463 I

C slave routines for the 87LPC76X

AN464 Using the 87LPC76X microcontroller as an I

C bus master

AN465 Using the 87LPC76X in multi-master I

C applications

Download from > www.philipslogic.com/support/appnotes/

Semiconductors

I

C Product Flyers

Mobile Display Drivers

LM75A

NE1617A/18/19

PCA8550

PCA9500/01

PCA9504A

PCA9515/16

PCA9540/42/44

PCA954X

PCA9550/51/52

PCA9554/54A/55

PCA9556

PCA9558

PCA9559

PCA9560/61

PCF EEPROM

P82B715

P82B96

Order Number: 9397 750 09071

Order Number: None

Order Number: 9397 750 07609

Order Number: 9397 750 04323

Order Number: 9397 750 09897

Order Number: 9397 750 08562

Order Number: 9397 750 08205

Order Number: 9397 750 06542

Order Number: 9397 750 09222

Order Number: 9397 750 09208

Order Number: 9397 750 08924

Order Number: 9397 750 06812

Order Number: 9397 750 08211

Order Number: 9397 750 06813

Order Number: 9397 750 09206

Order Number: 9397 750 09209

Order Number: 9397 750 09XXX

Order Number: 9397 750 09084

Download from > www.philipslogic.com/products/collateral/i2c

Semiconductors

I

C Device Data Sheets, IBIS models

Application Notes and Other Information

Product family descriptions line cards cross reference data sheets

Link to app notes models user guides

PLL design software datasheets

Semiconductors

S e m i c o n d u c t o r s

C Bus Solutions

C Bus Basics

Purchase of Philips I 2 C components conveys a license under the Philips' patent to use the components in the I 2 C system provided the system conforms to the

I 2 C specification defined by Philips.

C Bus Solutions

C Product Summary

TYPE OF FUNCTION IN DEVICE

Vcc RANGE (V)

FEATURES

FREQ (kHz) TEMP ( o

PACKAGES

Data sheets can be downloaded at www.philipslogic.com/i2c or www.semiconductors.philips.com/i2c

LM75A

NE1617A

NE1618

NE1619

OM4085

P82B715

P82B96

PCA8550

PCA8581C

PCA9500

PCA9501

PCA9511

PCA9515

PCA9516

PCA9518

PCA9540

PCA9542

PCA9543

PCA9544

PCA9545

PCA9546

PCA9548

PCA9550

PCA9551

PCA9552

PCA9553

PCA9534/54/54A

PCA9535/55

PCA9556

PCA9557

PCA9558

PCA9559

PCA9560

PCA9561

PCA9564

PCF2113

PCF85102C-2

PCF85103C-2

PCF85116-3

PCF8563

PCF8566

PCF8570

PCF8573

PCF8574/74A

PCF8575

PCF8576C

PCF8577C

PCF8578/79

PCF8582C-2

PCF8583

PCF8584

PCF8591

PCF8593

PCF8594C-2

PCF8598C-2

SAA1064

Printed in the U.S.A.

●

4-1-1

5-1-1

5-1-2

6-0-4

1-2

1-4

1-8

1-1

1-4

●

4 x 8

●

2 o

3 o

1 o

3 o

●

Date of release April 2002

●

8 0-1

96 16

2-8

2-64 8-1

25-100

8 2-1

4 2-1

●

8 4-1

4-1

●

8 8-1

16-1

128

0-1

●

24 ch 2

25-200

●

20-80

●

25-100

20-80

25-100

1 0-1

25-50

25-100

25-200

25-100

160

384

0-1

8 0-1

2 0-1

128 0-1

●

1 0-1

●

20-100

21 - mA

●

1.1

●

0 to 125

●

-25 to 85

●

100

56/64

PN TD

VSO40

PN TD

VSO40

TDK

TSDB

VSO56/LQFP64

VSO40

VSO56/LQFP64

N D

PN TD

LQFP100

PW BS

BS PW

PW BS

Print code XXXXXX/2pp/0402 9397 750 09894

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