View detail for IO1 Xplained Pro User Guide

View detail for IO1 Xplained Pro User Guide
Atmel MCUs
I/O1 Xplained Pro
USER GUIDE
Preface
®
Atmel I/O1 Xplained Pro is an extension board to the Atmel Xplained Pro
evaluation platform. I/O1 Xplained Pro is designed to give a wide variety of
functionality to Xplained Pro MCU boards including a microSD card, a
temperature sensor, a light sensor, and more.
Atmel-42078B-IO1-Xplained-Pro_User Guide-10/2015
Table of Contents
Preface............................................................................................................................ 1
1. Introduction................................................................................................................ 3
1.1.
1.2.
Features....................................................................................................................................... 3
Kit Overview................................................................................................................................. 3
2. Getting Started...........................................................................................................4
2.1.
2.2.
Xplained Pro Quick Start.............................................................................................................. 4
Design Documentation and Relevant Links................................................................................. 4
3. Xplained Pro.............................................................................................................. 5
3.1.
3.2.
Hardware Identification System....................................................................................................5
Xplained Pro Headers and Connectors........................................................................................5
3.2.1.
Xplained Pro Standard Extension Header..................................................................... 5
4. Hardware User Guide................................................................................................ 7
4.1.
4.2.
4.3.
Electrical Characteristics.............................................................................................................. 7
Headers and Connectors..............................................................................................................7
4.2.1.
I/O1 Xplained Pro Extension Header.............................................................................7
4.2.2.
Power Header................................................................................................................8
4.2.3.
GPIO Header................................................................................................................. 8
4.2.4.
UART Header................................................................................................................ 9
Peripherals................................................................................................................................... 9
4.3.1.
LED................................................................................................................................9
4.3.2.
Low Pass Filter.............................................................................................................. 9
4.3.3.
Temperature Sensor...................................................................................................... 9
4.3.4.
microSD Card Connector.............................................................................................10
4.3.5.
Light Sensor................................................................................................................. 11
5. Hardware Revision History and Known Issues........................................................12
5.1.
5.2.
Identifying Product ID and Revision........................................................................................... 12
Revision 3...................................................................................................................................12
6. Document Revision History..................................................................................... 13
7. Evaluation Board/kit Important Notice..................................................................... 14
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1.
Introduction
1.1.
Features
•
•
•
•
•
•
1.2.
microSD card connector
– 2GB microSD card included
– Accessed with SPI interface
PWM
– LED control
– PWM → Low pass filter → ADC
ADC
– PWM → Low pass filter → ADC
– Light sensor
UART
– Loopback interface via pin header
TWI
– AT30TSE758 temperature sensor with EEPROM
Xplained Pro hardware identification system
Kit Overview
Atmel I/O1 Xplained Pro extension board is a generic extension board for the Xplained Pro platform. It
connects to any Xplained Pro standard extension header on any Xplained Pro MCU board.
The extension board utilizes all functions on the standard Xplained Pro extension header to further
enhance the feature set of Xplained Pro MCU boards.
Figure 1-1 I/O1 Xplained Pro Extension Board
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2.
Getting Started
2.1.
Xplained Pro Quick Start
Three steps to start exploring the Atmel Xplained Pro platform:
1. Download Atmel Studio.
2. Launch Atmel Studio.
3. Connect I/O1 Xplained Pro to an Xplained Pro MCU board and connect a USB cable to the DEBUG
USB port on the Xplained Pro MCU board.
When the Xplained Pro MCU kit is connected to your computer for the first time, the operating system will
®
perform a driver software installation. The driver file supports both 32- and 64-bit versions of Microsoft
®
®
Windows XP, Windows Vista , Windows 7, and Windows 8.
Once the Xplained Pro MCU board is powered the green power LED will be lit and Atmel Studio will auto
detect which Xplained Pro MCU- and extension board(s) are connected. Atmel Studio will present
relevant information like datasheets and kit documentation. The kit landing page in Atmel Studio also has
the option to launch Atmel Software Framework (ASF) example applications for the kit. The target device
is programmed and debugged by the on-board Embedded Debugger and therefore no external
programmer or debugger tool is needed.
2.2.
Design Documentation and Relevant Links
The following list contains links to the most relevant documents and software for I/O1 Xplained Pro:
•
•
•
•
•
•
Xplained Pro products - Atmel Xplained Pro is a series of small-sized and easy-to-use evaluation
kits for Atmel microcontrollers and other Atmel products. It consists of a series of low-cost MCU
boards for evaluation and demonstration of features and capabilities of different MCU families.
Atmel Studio - Free Atmel IDE for development of C/C++ and assembler code for Atmel
microcontrollers.
Atmel Data Visualizer - Atmel Data Visualizer is a program used for processing and visualizing
data. Data Visualizer can receive data from various sources such as the Embedded Debugger Data
Gateway Interface found on Xplained Pro boards and COM ports.
Design Documentation - Package containing CAD source, schematics, BOM, assembly drawings,
3D plots, layer plots, etc.
Hardware Users Guide in PDF format - PDF version of this User Guide.
I/O1 Xplained Pro on Atmel web page - Atmel website link.
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3.
Xplained Pro
Xplained Pro is an evaluation platform that provides the full Atmel microcontroller experience. The
platform consists of a series of Microcontroller (MCU) boards and extension boards, which are integrated
with Atmel Studio, have Atmel Software Framework (ASF) drivers and demo code, support data
streaming, and more. Xplained Pro MCU boards support a wide range of Xplained Pro extension boards,
which are connected through a set of standardized headers and connectors. Each extension board has
an identification (ID) chip to uniquely identify which boards are connected to an Xplained Pro MCU board.
This information is used to present relevant user guides, application notes, datasheets, and example
code through Atmel Studio.
3.1.
Hardware Identification System
™
All Xplained Pro compatible extension boards have an Atmel ATSHA204 CryptoAuthentication chip
mounted. This chip contains information that identifies the extension with its name and some extra data.
When an Xplained Pro extension is connected to an Xplained Pro MCU board the information is read and
sent to Atmel Studio. The Atmel Kits extension, installed with Atmel Studio, will give relevant information,
code examples, and links to relevant documents. Table 3-1 Xplained Pro ID Chip Content on page 5
shows the data fields stored in the ID chip with example content.
Table 3-1 Xplained Pro ID Chip Content
Data field
Data type
Example content
Manufacturer
ASCII string
Atmel'\0'
Product Name
ASCII string
Segment LCD1 Xplained Pro'\0'
Product Revision
ASCII string
02'\0'
Product Serial Number
ASCII string
1774020200000010’\0’
Minimum Voltage [mV]
uint16_t
3000
Maximum Voltage [mV]
uint16_t
3600
Maximum Current [mA]
uint16_t
30
3.2.
Xplained Pro Headers and Connectors
3.2.1.
Xplained Pro Standard Extension Header
All Xplained Pro kits have one or more dual row, 20-pin, 100mil extension header. Xplained Pro MCU
boards have male headers, while Xplained Pro extensions have their female counterparts. Note that all
pins are not always connected. All connected pins follow the defined pin-out description in Table 3-2 Xplained Pro Standard Extension Header on page 6.
The extension headers can be used to connect a variety of Xplained Pro extensions to Xplained Pro MCU
boards or to access the pins of the target MCU on Xplained Pro MCU boards directly.
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Table 3-2 Xplained Pro Standard Extension Header
Pin number
Name
Description
1
ID
Communication line to the ID chip on an extension board
2
GND
Ground
3
ADC(+)
Analog to digital converter, alternatively positive part of differential
ADC
4
ADC(-)
Analog to digital converter, alternatively negative part of differential
ADC
5
GPIO1
General purpose I/O
6
GPIO2
General purpose I/O
7
PWM(+)
Pulse width modulation, alternatively positive part of differential
PWM
8
PWM(-)
Pulse width modulation, alternatively negative part of differential
PWM
9
IRQ/GPIO
Interrupt request line and/or general purpose I/O
10
SPI_SS_B/
GPIO
Slave select for SPI and/or general purpose I/O
11
I2C_SDA
Data line for I2C interface. Always implemented, bus type.
12
I2C_SCL
Clock line for I2C interface. Always implemented, bus type.
13
UART_RX
Receiver line of target device UART
14
UART_TX
Transmitter line of target device UART
15
SPI_SS_A
Slave select for SPI. Should preferably be unique.
16
SPI_MOSI
Master out slave in line of serial peripheral interface. Always
implemented, bus type.
17
SPI_MISO
Master in slave out line of serial peripheral interface. Always
implemented, bus type.
18
SPI_SCK
Clock for serial peripheral interface. Always implemented, bus type.
19
GND
Ground
20
VCC
Power for extension board
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4.
Hardware User Guide
4.1.
Electrical Characteristics
I/O1 Xplained Pro can be connected to several Xplained Pro MCU boards and manually connected to
other hardware. Xplained Pro MCU board(s) that does not have 3.3V as it's primary target voltage will
read all ID devices on connected extensions to check if they support the target voltage before enabling it
to the extension headers. The table below shows the static content written in the ID chip.
Table 4-1 I/O1 Xplained Pro ID Chip Content
Data field
Content
Product name
I/O1 Xplained Pro
Minimum operation voltage
2.0V
Maximum operation voltage
3.6V
Maximum current
10mA
Related Links
Hardware Identification System on page 5
4.2.
Headers and Connectors
4.2.1.
I/O1 Xplained Pro Extension Header
I/O1 Xplained Pro implements one standard Xplained Pro extension header marked with EXT in
silkscreen. This header makes it possible to connect the board to any Xplained Pro MCU board. The pinout definition for the extension header can be seen in the table below.
Table 4-2 I/O1 Xplained Pro Extension Header
Pin
on
EXT
Function
Description
1
ID
Communication line to ID chip
2
GND
Ground
3
LIGHTSENSOR
Light sensor output (ADC)
4
LP_OUT
Low pass filter output (ADC)
5
GPIO1
General Purpose I/O pin (GPIO)
6
GPIO2
General Purpose I/O pin (GPIO)
7
LED
LED control (PWM)
8
LP_IN
Low pass filter input (PWM)
9
TEMP_ALERT
ALERT pin (Pin 3) of temperature sensor chip (IRQ)
10
microSD_DETECT
Detect pin on microSD card connector (GPIO)
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4.2.2.
Pin
on
EXT
Function
Description
11
TWI SDA
Data line of TWI interface, connected to SDA pin (Pin 1) of temperature
sensor chip
12
TWI SCL
Clock line of TWI interface, connected to SCL pin (Pin 2) of temperature
sensor chip
13
UART RX
Receive pin of target MCU UART interface
14
UART TX
Transmit pin of target MCU UART interface
15
microSD_SS
Chip select signal, connected to DAT3 pin on microSD card connector
16
SPI_MOSI
Master Out, Slave In signal of target MCU SPI interface. Connected to
CMD pin on microSD card connector.
17
SPI_MISO
Master In, Slave Out signal of target MCU SPI interface. Connected to D0
pin on microSD card connector.
18
SPI_SCK
Clock line of SPI interface. Connected to CLK pin on microSD card
connector.
19
GND
Ground
20
VCC
Target supply voltage
Power Header
The two pin power header on IO1 Xplained Pro can be used together with the GPIO pins to connect
external circuitry or probe the voltage on the board. The pins of the header are marked in silk screen with
VTG for target voltage and GND for ground.
Info: The two pin power header should not be used to apply power to I/O1 Xplained Pro when
connected to an Xplained Pro MCU board as it will get power from the Xplained Pro MCU board
through the 20-pin extension connector.
Table 4-3 Power Header
4.2.3.
Silk screen marking
Description
VTG
Target voltage, main voltage of the I/O1 Xplained Pro extension board
GND
Ground
GPIO Header
I/O1 Xplained Pro features a 2-pin header with access to the two generic GPIO lines on the 20-pin
extension connector. These lines are routed from the 20-pin extension header through 39Ω series
resistors to the 2-pin GPIO header.
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Table 4-4 GPIO Header
4.2.4.
Pin on EXT connector
Silk screen marking
5
GPIO1
6
GPIO2
UART Header
I/O1 Xplained Pro features a 2-pin header with access to the UART pins of the 20-pin extension
connector. This two pin header comes with a jumper mounted to enable the UART to work in loopback
mode. Both UART lines are terminated with 39Ω series resistors.
Table 4-5 UART Header
Pin on EXT connector
Silk screen marking
14
TX
13
RX
4.3.
Peripherals
4.3.1.
LED
There is one yellow LED available on the I/O1 Xplained Pro extension board that can be controlled by
Pulse Width Modulation (PWM) or regular GPIO operation. The LED can be activated by driving the
connected I/O line to GND.
Table 4-6 LED Connection
4.3.2.
Pin on EXT connector
Silk screen marking
7
LED
Low Pass Filter
I/O1 Xplained Pro features a first order low-pass filter with a cutoff frequency of ~2340Hz. It is realized
with a 680Ω resistor and a 100nF capacitor. This filter can be used to filter a PWM generated signal which
can be sampled with an ADC pin.
Table 4-7 Low Pass Filter Connections
4.3.3.
Pin on EXT connector
Silk screen marking
8
PWM
4
ADC
Temperature Sensor
I/O1 Xplained Pro extension board features an Atmel AT30TSE758 temperature sensor chip with an 8kb
serial EEPROM inside. The sensor includes programmable high and low temperature alarms, userselectable temperature resolution up to 12 bits, and an I2C/SMBus™ compatible serial interface.
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Table 4-8 Temperature Sensor Connections
Pin on EXT
connector
Pin name
AT30TSE758
temperature
sensor pin
Comment
11
SDA
1
Data line of serial interface
12
SCL
2
Clock line of serial interface
9
ALERT
3
Temperature alarm signalling pin
GND
GND
4
-
A2
5
Address line for serial interface, by default pulled
high
-
A1
6
Address line for serial interface, by default pulled
high
-
A0
7
Address line for serial interface, by default pulled
high
VCC
VCC
8
The temperature sensor has two TWI addresses; one for the temperature sensor and one for the
EEPROM. The addresses are "0b1001 A2 A1 A0" for the temperature sensor and "0b1010 A2 A1 A0" for
the EEPROM. The address selection lines (A2, A1, and A0) of the temperature sensor chip is by default
pulled high through 100kΩ resistors, which makes the default addresses 0b1001111 and 0b1010111.
Soldering the straps on the back of the I/O1 Xplained Pro board for An will alter that bit in the address to
zero. Each strap is marked in silkscreen with A0, A1, and A2 as shown in the picture below. When
communicating with the EEPROM parts of the TWI address is used as a page address. For more details,
see the device (AT30TSE752A/754A/758A) datasheet.
Figure 4-1 Temperature Sensor TWI Address
4.3.4.
microSD Card Connector
I/O1 Xplained Pro features a microSD card connector that connects to cards via a SPI interface.
Examples on how to use microSD cards and an example SD card stack can be found through ASF, for
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the full SD card specification, see sdcard.org. The connections to the microSD card connector are shown
in the table below.
Table 4-9 microSD Connector Connections
4.3.5.
Pin on EXT
connector
Pin name
microSD
card
connector
pin
Comment
-
D2
1
Data line 2 on microSD card
15
D3
2
Data line 3 on microSD card. Active low chip select pin for
microSD card, pulled high through 100kΩ pullup resistor.
16
CMD
3
Command line for microSD card. Connected to SPI_MOSI.
VCC
VDD
4
18
CLK
5
GND
GND
6
17
D0
7
Data line 0 on microSD card. Connected to SPI_MISO.
-
D1
8
Data line 1 on microSD card
10
SW_A
9
GND
SW_B
10
When a microSD card is put into the connector, SW_A and
SW_B are short-circuited. SW_A is connected to the
microSD_DETECT signal. To use this as a card indicator
remember to enable internal pullup in the target device.
Clock line on microSD card. Connected to SPI_SCK.
Light Sensor
I/O1 Xplained Pro features a TEMT6000 light sensor from Vishay. The sensor data can be read by an
ADC pin on n Xplained Pro MCU board.
Table 4-10 Light Sensor Connections
Pin on EXT connector
Function
3
Light sensor signal
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5.
Hardware Revision History and Known Issues
5.1.
Identifying Product ID and Revision
The revision and product identifier of Xplained Pro boards can be found in two ways; either through Atmel
Studio or by looking at the sticker on the bottom side of the PCB.
By connecting an Xplained Pro MCU board to a computer with Atmel Studio running, an information
window will pop up. The first six digits of the serial number, which is listed under kit details, contain the
product identifier and revision. Information about connected Xplained Pro extension boards will also
appear in the Atmel Kit's window.
The same information can be found on the sticker on the bottom side of the PCB. Most kits will print the
identifier and revision in plain text as A09-nnnn\rr, where nnnn is the identifier and rr is the revision.
Boards with limited space have a sticker with only a QR-code, which contains a serial number string.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The product identifier for I/O1 Xplained Pro is A09-1775.
5.2.
Revision 3
Revision 3 of I/O1 Xplained Pro is the initial released version. There are no known issues.
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6.
Document Revision History
Doc. rev.
Date
Comment
42078B
10/2015
Added electrical characteristics
42078A
02/2013
Initial document release
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7.
Evaluation Board/kit Important Notice
This evaluation board/kit is intended for use for FURTHER ENGINEERING, DEVELOPMENT,
DEMONSTRATION, OR EVALUATION PURPOSES ONLY. It is not a finished product and may not
(yet) comply with some or any technical or legal requirements that are applicable to finished products,
including, without limitation, directives regarding electromagnetic compatibility, recycling (WEEE), FCC,
CE or UL (except as may be otherwise noted on the board/kit). Atmel supplied this board/kit "AS IS,"
without any warranties, with all faults, at the buyer's and further users' sole risk. The user assumes all
responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies Atmel
from all claims arising from the handling or use of the goods. Due to the open construction of the
product, it is the user's responsibility to take any and all appropriate precautions with regard to
electrostatic discharge and any other technical or legal concerns.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER USER NOR ATMEL
SHALL BE LIABLE TO EACH OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES.
No license is granted under any patent right or other intellectual property right of Atmel covering or
relating to any machine, process, or combination in which such Atmel products or services might be or
are used.
Mailing Address:
Atmel Corporation
1600 Technology Drive
San Jose, CA 95110
USA
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Atmel Corporation
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1600 Technology Drive, San Jose, CA 95110 USA
T: (+1)(408) 441.0311
F: (+1)(408) 436.4200
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2015 Atmel Corporation. / Rev.: Atmel-42078B-IO1-Xplained-Pro_User Guide-10/2015
®
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