Breakout Pads - Silicon Laboratories EFR32xG21B User Manual

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
map to the pin numbers printed on the breakout pads. To see the available functions on each, refer to the data sheet for
EFR32MG21B010F1024IM32.
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VMCU
GND
NC / P0
NC / P2
UIF_BUTTON0 / EXP7 / PB00 / P4
UIF_BUTTON1 / EXP9 / PB01 / P6
UIF_LED0 / EXP11 / PD02 / P8
UIF_LED1 / EXP13 / PD03 / P10
NC / P12
DISP_EXTCOMIN / PA00 / P14
DBG_TCK_SWCLK / PA01 / P16
DBG_TMS_SWDIO / PA02 / P18
DBG_TDO_SWO / PA03 / P20
VCOM_CTS / PA04 / P22
GND
VRF
5V
GND
NC / P24
NC / P26
NC / P28
NC / P30
NC / P32
NC / P34
DISP_EXTCOMIN / PA00 / P36
NC / P38
NC / P40
TRACED0 / PA03 / P42
NC / P44
NC
GND
3V3
Figure 3.2. Breakout Pad Pin Mapping
UG428: EFR32xG21B 2.4 GHz 10 dBm Wireless Starter Kit User's Guide
J101
VMCU
GND
P1 / PC00 / EXP4 / DISP_MOSI
P3 / PC01 / EXP6 / VCOM_RTS
P5 / PC02 / EXP8 / DISP_SCLK
P7 / PC03 / EXP10 / DISP_SCS
P9 / PA05 / EXP12 / VCOM_TX
P11 / PA06 / EXP14 / VCOM_RX
P13 / NC
P15 / NC
P17 / NC
P19 / NC
P21 / NC
P23 / NC
GND
VRF
J102
5V
GND
P25 / PC04 / PTI_DATA
P27 / PC05 / PTI_SYNC
P29 / NC
P31 / PD04 / VCOM_ENABLE / DISP_ENABLE
P33 / NC
P35 / NC
P37 / NC
P39 / NC
P41 / NC
P43 / NC
P45 / NC
NC
GND
3V3
Connectors
Rev. 1.0 | 8