Expansion Header Pin-Out - Silicon Laboratories SLWSTK6240A User Manual

3.4.1 Expansion Header Pin-out

Many pins on the EZR32 are shared between the Expansion Header and other functions on the Wireless STK Mainboard.
3.1 Expansion Header Pinout on page 10
Pin Connection
20 3V3
18 5V
16 PD6
14 PD5
12 PD4
10 PE13
8 PE12
6 PE11
4 PE10
2 VMCU
19 BOARD_ID_SDA
17 BOARD_ID_SCL
15 PD7
13 Not connected
11 PB11
9 PC10
7 PC9
5 PF4
3 PF2
1 GND
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includes an overview of the mainboard features that share pins with the Expansion Header.
Table 3.1. Expansion Header Pinout
EXP Header function
Board controller supply
Board USB voltage
I2C_SDA
UART_RX
UART_TX
SPI_CS
SPI_SCLK
SPI_MISO
SPI_MOSI
EZR32 voltage domain, included in AEM measurements.
Connected to Board Controller for identification of add-on boards.
Connected to Board Controller for identification of add-on boards.
I2C_SCL
GPIO
GPIO
GPIO
GPIO
GPIO
Ground
UG190: EZR32HG 868 MHz 16 dBm Wireless Starter Kit User's Guide
Shared feature
SENSOR_I2C_SDA
VCOM_RX_MISO
VCOM_TX_MOSI
DISP_SCLK
DISP_MOSI
SENSOR_I2C_SCL
BUTTON1
BUTTON0
LED0
LED0
Connectors
Table
Peripheral mapping
I2C0_SDA #1
LEUART0_RX #0
LEUART0_TX #0
USART0_CS #0
USART0_CLK #0
USART0_RX #0
USART0_TX #0
I2C0_SCL #1
Rev. 1.01 | 10