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Other Interfaces
Pin Name
Pin No.
WLAN_SLP_CLK
24
XTAL_IN
10
XTAL_OUT
11
3
GPIO1
40
GPIO2
39
RESERVED
Pin Name
Pin No.
4, 5, 8, 29, 30,32, 35, 37, 38
RESERVED
NOTE
The module supports external crystal or built-in crystal, so XTAL_IN and XTAL_OUT pins are optional
pins.
3.4. Power Supply
3.4.1. Power Supply Pins Introduction
The following table shows the power supply pins and ground pins of FC908A.
Table 5: Definition of Power Supply and GND Pins
Pin Name
Pin No.
VBAT
9
VDDIO
22
3
JTAG mode can be configured by configuring GPIO1/GPIO2. If you need, please contact the QUECTEL team.
FC908A_Hardware_Design
I/O
Description
External 32.768 kHz low
DI
power clock input
DI
Crystal input
DO
Crystal output
General-purpose
DIO
input/output
General-purpose
DIO
input/output
Description
Power supply for the module
Power supply for module's
I/O pins
Wi-Fi&Bluetooth Module Series
Comment
Optional.
If unused, keep them open.
Comment
Keep them open.
Min.
Typ.
Max.
3.0
3.6
4.8
1.71
1.8/3.3
3.63
Unit
V
V
20 / 49
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