Table 3-2. 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
18 SPI_SCK SPI clock pin. Always connected, bus type
19 GND Ground pin for extension boards
20 VCC Power pin for extension boards
Xplained Pro
© 2018 Microchip Technology Inc.
User Guide
DS50002725A-page 7
