Standard Headers And Connectors; Xplained Pro Standard Extension Header - Atmel SAMDA1 Xplained Pro User Manual

3.4

Standard Headers and Connectors

3.4.1

Xplained Pro Standard Extension Header

All Xplained Pro kits have one or more dual row, 20-pin, 100mil extension headers. Xplained Pro MCU boards
have male headers while Xplained Pro extensions have their female counterparts. Note that all pins are not
always connected. However, all the connected pins follow the defined pin-out described in
Pro Extension Header" on page
extensions to Xplained Pro MCU boards and to access the pins of the target MCU on Xplained Pro MCU board directly.
Pin number Name
1 ID
2 GND
3 ADC(+)
4 ADC(-)
5 GPIO1
6 GPIO2
7 PWM(+)
8 PWM(-)
9 IRQ/GPIO
10 SPI_SS_B/GPIO
11 TWI_SDA
12 TWI_SCL
13 USART_RX
14 USART_TX
15 SPI_SS_A
16 SPI_MOSI
17 SPI_MISO
18 SPI_SCK
19 GND
VCC
20
9. The extension headers can be used to connect a wide variety of Xplained Pro
Xplained Pro Extension Header
Table 3-5.
Description
Communication line to the ID chip on extension board
Analog to digital converter , alternatively positive part of
differential ADC
Analog to digital converter , alternatively neg. part of
differential ADC
GPIO
GPIO
Pulse width modulation , alternatively positive part of
differential PWM
Pulse width modulation , alternatively negative part of
differential PWM
Interrupt request line and/or general purpose I/O.
Slave select for SPI and/or general purpose I/O
Data line for two-wire interface. Always implemented, bus
type.
Clock line for two-wire interface. Always implemented, bus
type.
Receiver line of Universal Synchronous and Asynchronous
serial Receiver and Transmitter.
Transmitter line of Universal Synchronous and
Asynchronous serial Receiver and Transmitter.
Slave select for SPI. Should be unique if possible.
Master out slave in line of Serial peripheral interface. Always
implemented, bus type.
Master in slave out line of Serial peripheral interface. Always
implemented, bus type.
Clock for Serial peripheral interface. Always implemented,
bus type.
Ground.
Power for extension board.
Atmel SAMDA1 Xplained Pro [USERGUIDE]
Table 3-5, "Xplained
9