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WLAN_SLP_CLK
24
XTAL_IN
10
XTAL_OUT
11
SDIO_VSEL
29
2
GPIO1
40
GPIO2
39
GPIO3
38
GPIO4
37
RESERVED
Pin Name
Pin No.
RESERVED
4, 5, 8, 30, 32, 35
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 FC905A.
2
JTAG mode can be configured by configuring GPIO1/GPIO2. If you need, please contact the QUECTEL team.
FC905A_Hardware_Design
External 32.768 kHz low
DI
power clock input
DI
Crystal input
DO
Crystal output
SDIO mode selection
1.8 V: pull-up by default
DI
3.3 V: pull-down and
connect to GND through
10 kΩ resistor
DIO
DIO
General-purpose
input/output
DIO
DIO
Wi-Fi&Bluetooth Module Series
Optional.
VIO power domain.
If unused, keep them open.
Comment
Keep them open.
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