Wi-Fi&Bluetooth Module Series
FC64E_Hardware_Design
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3.4. Power Supply
The following table shows the power supply pins and ground pins of the module.
Table 5: Definition of Power Supply and GND Pins
The module can be powered by discrete power supply chips. The following figure shows a reference
design block diagram for power design.
The 3.3 V power source is recommended to output current 2.0 A at least. For three antennas version
module, VDD_3V3 should be powered.
Figure 3: Power Supply Block Diagram
The following figure shows the recommended turn-on and turn-off sequence of the module.
RESERVED Interfaces
Pin Name
Pin No.
Comment
RESERVED
9, 55, 56, 59, 65, 66
Keep them open.
Pin Name
Pin No.
Description
Min.
Typ.
Max.
Unit
VDD_CORE_VL
51, 52
Provide 0.95 V for the
module’s main part
0.9
0.95
1.0
V
VDD_CORE_VM
48
Provide 1.35 V for the
module’s main part
1.3
1.35
1.42
V
VDD_CORE_VH
47
Provide 1.95 V for the
module’s main part
1.85
1.95
2.05
V
VDD_IO
14
Provide 1.8 V for the
module’s I/O pins
1.71
1.8
1.89
V
VDD_RF
24, 40
Provide 2.2 V for external RF
circuit
1.9
2.2
2.4
V
VDD_3V3
26
Provide 3.3 V for the
module’s discrete Bluetooth
part
3.0
3.3
3.6
V
GND
3, 6, 15, 25, 27, 29–31, 33–35, 37–39, 46, 49, 50, 53, 54, 57, 58, 60–64, 67–80
