Xplained Pro Headers And Connectors; Xplained Pro Standard Extension Header - Atmel Xplained Pro SAM4L8 User Manual

1. External power.
2. Embedded Debugger USB.
3. Target USB.
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 the table
below.
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
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Info: External power is required when 500mA from a USB connector is not enough to power
the board with possible extension boards. A connected USB device in a USB host application
might easily exceed this limit.
Name
ID
GND
ADC(+)
ADC(-)
GPIO1
GPIO2
PWM(+)
PWM(-)
IRQ/GPIO
SPI_SS_B/
GPIO
2
I C_SDA
2
I C_SCL
UART_RX
UART_TX
Description
Communication line to the ID chip on an extension board
Ground
Analog to digital converter, alternatively positive part of differential
ADC
Analog to digital converter, alternatively negative part of differential
ADC
General purpose I/O
General purpose I/O
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
2
Data line for I C interface. Always implemented, bus type.
2
Clock line for I C interface. Always implemented, bus type.
Receiver line of target device UART
Transmitter line of target device UART
Atmel SAM4L8 Xplained Pro [USER GUIDE]
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