Wi-Fi&Bluetooth Module Series
AF20_Hardware_Design
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1. Please keep all RESERVED and unused pins disconnected.
2. All GND pins should be connected to ground.
3.3. Pin Description
Table 3: I/O Parameters Definition
Type
Description
AIO
Analog input/output
DI
Digital input
DIO
Digital input/output
DO
Digital output
PI
Power input
Table 4: Pin Description
Power Supply
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
VDD_3V3
21
PI
Main power supply
for the module
Vmax = 3.46 V
Vmin = 3.14 V
Vnom = 3.3 V
It must be provided
with sufficient current
up to 0.6 A.
VIO
11
PI
Power supply for the
module’s I/O pins
Vmax = 1.89 V
Vmin = 1.71 V
Vnom = 1.8 V
The power must
supply over 10 mA
current.
It can be powered by
VDD_EXT of AG35
module.
GND
1, 12, 20, 28, 29, 31, 36, 38–40, 43–45, 48–52
Wi-Fi Application Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
NOTE