Xplained Pro Headers And Connectors; Xplained Pro Standard Extension Header - Atmel SAM4L Xplained Pro User Manual

Info: External power is required when 500mA from a USB connector is not enough to power
the board with possible extension boards.
3.4.

Xplained Pro 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 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
Xplained Pro Standard Extension Header
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.
Table 3-4 Xplained Pro Standard Extension Header
Pin number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
on page 11.
Name Description
ID Communication line to the ID chip on an extension board
GND Ground
ADC(+) Analog to digital converter, alternatively positive part of differential
ADC
ADC(-) Analog to digital converter, alternatively negative part of differential
ADC
GPIO1 General purpose I/O
GPIO2 General purpose I/O
PWM(+) Pulse width modulation, alternatively positive part of differential
PWM
PWM(-) Pulse width modulation, alternatively negative part of differential
PWM
IRQ/GPIO Interrupt request line and/or general purpose I/O
SPI_SS_B/ Slave select for SPI and/or general purpose I/O
GPIO
2
I C_SDA Data line for I
2
I C_SCL Clock line for I
UART_RX Receiver line of target device UART
UART_TX Transmitter line of target device UART
SPI_SS_A Slave select for SPI. Should preferably be unique.
SPI_MOSI Master out slave in line of serial peripheral interface. Always
implemented, bus type.
2
C interface. Always implemented, bus type.
2
C interface. Always implemented, bus type.
Atmel SAM4L Xplained Pro [USER GUIDE]
Atmel-42074C-SAM4L-Xplained-Pro_User Guide-11/2015
Table 3-4
11