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Table 3-2. Xplained Pro Standard Extension Header
Pin number
Name
Description
1
ID
Communication line to the ID chip on an extension board
2
GND
Ground
3
ADC(+)
Analog to digital converter, alternatively positive part of differential
ADC
4
ADC(-)
Analog to digital converter, alternatively negative part of differential
ADC
5
GPIO1
General purpose I/O
6
GPIO2
General purpose I/O
7
PWM(+)
Pulse width modulation, alternatively positive part of differential
PWM
8
PWM(-)
Pulse width modulation, alternatively negative part of differential
PWM
9
IRQ/GPIO
Interrupt request line and/or general purpose I/O
10
SPI_SS_B/
GPIO
Slave select for SPI and/or general purpose I/O
11
I
2
C_SDA
Data line for I
2
C interface. Always implemented, bus type.
12
I
2
C_SCL
Clock line for I
2
C interface. Always implemented, bus type.
13
UART_RX
Receiver line of target device UART
14
UART_TX
Transmitter line of target device UART
15
SPI_SS_A
Slave select for SPI. Should preferably be unique.
16
SPI_MOSI
Master out slave in line of serial peripheral interface. Always
implemented, bus type.
17
SPI_MISO
Master in slave out line of serial peripheral interface. Always
implemented, bus type.
18
SPI_SCK
Clock for serial peripheral interface. Always implemented, bus type.
19
GND
Ground
20
VCC
Power for extension board
Atmel OLED1 Xplained Pro [USER GUIDE]
Atmel-42077C-OLED1-Xplained-Pro-Hardware_User Guide-03/2016
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