3.6
Xplained Pro Headers and Connectors
3.6.1
Xplained Pro Standard Extension Header
All Xplained Pro kits have many dual row, 20-pin, 100-mil extension headers. The Xplained Pro MCU
boards have male headers, while the Xplained Pro extensions have their female counterparts. All
connected pins follow the defined pin description in the table.
Info:
Not all pins are always connected on all extension headers.
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 microcontroller on the Xplained Pro boards.
Table 3-5. Xplained Pro Standard Extension Header
Pin Number
Pin Name
Description
1
ID
Pin to communicate with the ID chip on an extension board.
2
GND
Ground
3
ADC(+)
Analog-to-Digital Converter; alternatively, a pin for the positive
terminal of a differential ADC.
4
ADC(-)
Analog-to-Digital Converter; alternatively, a pin for the negative
terminal of a differential ADC.
5
GPIO1
General purpose I/O pin.
6
GPIO2
General purpose I/O pin.
7
PWM(+)
Pulse width modulation; alternatively, a pin for the positive part of a
differential PWM.
8
PWM(-)
Pulse width modulation; alternatively, a pin for the negative part of a
differential PWM.
9
IRQ/GPIO
Interrupt request pin and/or general purpose I/O pin.
10
SPI_SS_B/
GPIO
Slave select pin for Serial Peripheral Interface (SPI) and/or general
purpose I/O pin.
11
I
2
C_SDA
Data pin for I
2
C interface. Always connected, bus type.
12
I
2
C_SCL
Clock pin for I
2
C interface. Always connected, bus type.
13
UART_RX
Receiver pin of target device UART.
14
UART_TX
Transmitter pin of target device UART.
15
SPI_SS_A
Slave select for SPI. This pin should preferably not be connected to
anything else.
16
SPI_MOSI
SPI master out slave in pin. Always connected, bus type.
17
SPI_MISO
SPI master in slave out pin. Always connected, bus type.
ATSAMB11ZR
©
2017 Microchip Technology Inc.
User Guide
DS70005334A-page 10
