User's Manual
Wi-Fi&Bluetooth Module Series
FC41D_Hardware_Design
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NET_STATUS
Figure 9: Reference Circuit of the Network Status Indicator
3.11. GPIO Interfaces
FC41D module provides 4 GPIOs by default. Any GPIO can be configured as interrupt to wake the
module from low power mode.
The following table show the pin description of GPIO Interfaces.
Tabel 14: GPIO Pin Definition
3.12. ADC Interface*
The module provides one ADC interface by default, and the voltage range is 0–2.4 V. The AT command
can be used to read the voltage value of the ADC. In order to ensure the accuracy of the ADC voltage
measurement, the ADC traces should be surrounded with ground.
Pin Name
Pin No.
I/O
Description
Note
GPIO1
10
DIO
General-purpose
input/output
Wake-up interrupt;
3.3 V voltage domain.
GPIO2
22
GPIO3
23
GPIO4
24