Power Supply - Quectel FC64E Hardware Design

RESERVED Interfaces
Pin Name Pin No.
RESERVED 9, 55, 56, 59, 65, 66

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
Pin Name Pin No.
VDD_CORE_VL 51, 52
VDD_CORE_VM 48
VDD_CORE_VH 47
VDD_IO 14
VDD_RF 24, 40
VDD_3V3 26
GND 3, 6, 15, 25, 27, 29–31, 33–35, 37–39, 46, 49, 50, 53, 54, 57, 58, 60–64, 67–80
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.
The following figure shows the recommended turn-on and turn-off sequence of the module.
FC64E_Hardware_Design
Description
Provide 0.95 V for the
module's main part
Provide 1.35 V for the
module's main part
Provide 1.95 V for the
module's main part
Provide 1.8 V for the
module's I/O pins
Provide 2.2 V for external RF
circuit
Provide 3.3 V for the
module's discrete Bluetooth
part
Figure 3: Power Supply Block Diagram
Wi-Fi&Bluetooth Module Series
Comment
Keep them open.
Min. Typ. Max.
0.9 0.95 1.0
1.3 1.35 1.42
1.85 1.95 2.05
1.71 1.8 1.89
1.9 2.2 2.4
3.0 3.3 3.6
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Unit
V
V
V
V
V
V