Product Info

Wi-Fi&BT Module Series
FC21 Hardware Design
FC21_Hardware_Design 16 / 52
pin open.
WLAN_EN 9 DI
Wi-Fi function
control
V
IL
min=-0.3V
V
IL
max=0.54V
V
IH
min=1.26V
V
IH
max=2.0V
1.8V power domain.
Active high.
SDIO_D3 22 IO SDIO data bus D3
V
OL
max=0.18V
V
OH
min=1.62V
V
IL
min=-0.3V
V
IL
max=0.54V
V
IH
min=1.26V
V
IH
max=2.0V
1.8V power domain
SDIO_D2
1)
23 IO SDIO data bus D2
V
OL
max=0.18V
V
OH
min=1.62V
V
IL
min=-0.3V
V
IL
max=0.54V
V
IH
min=1.26V
V
IH
max=2.0V
1.8V power domain.
Require external
pull-up to 1.8V.
SDIO_D1 24 IO SDIO data bus D1
V
OL
max=0.18V
V
OH
min=1.62V
V
IL
min=-0.3V
V
IL
max=0.54V
V
IH
min=1.26V
V
IH
max=2.0V
1.8V power domain
SDIO_D0 25 IO SDIO data bus D0
V
OL
max=0.18V
V
OH
min=1.62V
V
IL
min=-0.3V
V
IL
max=0.54V
V
IH
min=1.26V
V
IH
max=2.0V
1.8V power domain
SDIO_CLK 26 DI SDIO bus clock
V
IL
min=-0.3V
V
IL
max=0.54V
V
IH
min=1.26V
V
IH
max=2.0V
1.8V power domain
SDIO_CMD 27 IO SDIO bus command
V
OL
max=0.18V
V
OH
min=1.62V
V
IL
min=-0.3V
V
IL
max=0.54V
V
IH
min=1.26V
V
IH
max=2.0V
1.8V power domain
BT Interface
Pin Name Pin No. I/O Description DC Characteristics Comment