User's Manual

Wi-Fi&Bluetooth Module Series
FC41D_Hardware_Design
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Please keep all RESERVED and unused pins open.
PMW interface.
PWM Interface*
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
PWM
11
DO
Pulse width
modulation
output channel
3.3 V power domain
GPIO Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
GPIO1
10
DIO
General-purpose
input/output
3.3 V power domain
GPIO2
22
DIO
General-purpose
input/output
Can be reused as
PMW interface.
GPIO3
23
DIO
General-purpose
input/output
GPIO4
24
DIO
General-purpose
input/output
ADC Interface*
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ADC
21
AI
General-purpose
ADC interface
Voltage Range:
0–2.4 V
Can be reused as
PMW interface.
RF Antenna Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ANT_WIFI/BT
2
AIO
Wi-Fi/Bluetooth
antenna interface
50 Ω Impedence
RESERVED
Pin Name
Pin No.
RESERVED
6
NOTE