4.1.2 EXP Header Pinout
The table below shows the pin assignments of the EXP header.
Table 4.1. EXP Header Pinout
EXP Header
Pin
Function
2
WFM200S voltage domain (power switch set to EXP VMCU)
4
SPI_MOSI / SDIO_DAT1
6
SPI_MISO / SDIO_DAT0
8
SPI_SCLK / SDIO_CMD
10
SPI_CS / SDIO_CLK
12
SPI_WIRQ / SDIO_DAT3
14
SDIO_DAT2
16
Not Connected
18
Board 5 V supply. Used to supply LDO regulator.
20
Board 3V3 supply. Only used for board identification.
1
Ground
3
GPIO (WFM200S WUP)
5
Not Connected
7
GPIO (WFM200S RESETn)
9
GPIO (HIF_SEL_CTRL read access)
11
Not Connected
13
Not Connected
15
Not Connected
17
Identification of expansion boards.
19
Identification of expansion boards.
UG407: WFM200S Wi-Fi
®
Expansion Kit User's Guide
Connectors
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