User Manual

AT04357 RCB256RFR2-XPRO User Guide [USER GUIDE]
TBDA-MCU-09/2013
12
Pin number Name Description
9 IRQ/GPIO Interrupt request line and/or general purpose IO.
10 SPI_SS_B/GPIO Slave select for SPI and/or general purpose IO.
11 TWI_SDA Data line for two wire interface. Always implemented, bus
type.
12 TWI_SCL Clock line for two wire interface. Always implemented, bus
type.
13 USART_RX Receiver line of Universal Synchronous and Asynchronous
serial Receiver and Transmitter
14 USART_TX Transmitter line of Universal Synchronous and
Asynchronous serial Receiver and Transmitter
15 SPI_SS_A Slave select for SPI. Should be unique if possible.
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