Atmel SMARTCARD XPRO, User Manual

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Table 3-2. Xplained Pro Extension Header
Pin number Name Description
1 ID Communication line to the ID chip on 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 TWI_SDA Data line for two-wire interface. Always implemented, bus
type.
12 TWI_SCL Clock line for two-wire interface. Always implemented, bus
type.
13 USART_RX Receiver line of Universal Synchronous and Asynchronous
serial Receiver and Transmitter
14 USART_TX Transmitter line of Universal Synchronous and
Asynchronous serial Receiver and Transmitter
15 SPI_SS_A Slave select for SPI. Should be unique if possible.
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
Atmel SMARTCARD XPRO [USER GUIDE]
Atmel-42560A-SMARTCARD-XPRO_User Guide-01/2016
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