Datasheet

6.3 UEXT module

A13-OLinuXino has an UEXT connector and can connect with Olimex's UEXT modules.

For more information on UEXT please visit:

https://www.olimex.com/Products/Modules/UEXT/resources/UEXT.pdf

UEXT connector

Pin # Signal Name Processor Pin #

1 3.3V -

2 GND -

3 UART1_TX 152

4 UART1_RX 151

5 TWI2_SCK 161

6 TWI2_SDA 160

7 SPI2_MISO 117

8 SPI2_MOSI 116

9 SPI2_CLK 115

10 SPI2_CS0 114

The UEXT pinout is also printed at the bottom of the board under the connector.

Notice that UART1 data lines are multiplexed with the UART pins in the UEXT connector.

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