3.3 Breakout Pads
Most pins of the EFR32 are routed from the radio board to breakout pads at the top and bottom edges of the Wireless STK Mainboard.
A 2.54 mm pitch pin header can be soldered on for easy access to the pins. The figure below shows you how the pins of the EFR32
maps to the pin numbers printed on the breakout pads. To see the available functions on each, please refer to the data sheet for
EFR32FG14P233F256GM48.
GND
VMCU
P23 / NC
P21 / NC
P19 / NC
P17 / NC
GND
P15 / NC
P13 / PC11 / EXP16 / I2C_SDA
P11 / PA1 / EXP14 / VCOM_RX
P9 / PA0 / EXP12 / VCOM_TX
P7 / PC9 / EXP10
P5 / PC8 / EXP8 / FLASH_SCLK / DISP_SCLK
P3 / PC7 / EXP6 / FLASH_MISO
P1 / PC6 / EXP4 / FLASH_MOSI / DISP_SI
VRF
GND
VMCU
PTI_SYNC / PB13 / P22
PTI_DATA / PB12 / P20
PTI_CLK / PB11 / P18
VCOM_ENABLE / PA5 / P16
GND
FLASH_SCS / PA4 / P14
I2C_SCL / EXP15 / PC10 / P12
DBG_TDI / EXP13 / PF3 / P10
LED0 / EXP11 / PF4 / P8
BTN1 / EXP9 / PF7 / P6
BTN0 / EXP7 / PF6 / P4
VCOM_RTS / EXP5 / PA3 / P2
VCOM_CTS / EXP3 / PA2 / P0
VRF
J101
GND
GND
5V
5V
NC
NC
P45 / NC
NC / P44
P43 / NC
NC / P42
P41 / NC
NC / P40
3V3
3V3
P39 / NC
NC / P38
P37 / PD15 / DISP_ENABLE / SENSOR_ENABLE
NC / P36
P35 / PD15 / DISP_ENABLE / SENSOR_ENABLE
NC / P34
P33 / PD14 / DISP_SCS
LED1 / PF5 / P32
P31 / PD13 / DISP_EXTCOMIN
NC / P30
P29 / NC
DBG_TDO_SWO / PF2 / P28
P27 / NC
DBG_TMS_SWDIO / PF1 / P26
P25 / NC
DBG_TCK_SWCLK / PF0 / P24
GND
GND
J102
Figure 3.2. Radio Board Pin Mapping on Breakout Pads
UG321: EFR32FG14 2400/434 MHz 10 dBm Dual Band Radio Board and Wireless Starter Kit User's Guide
Connectors
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