Hardware Guide

Table Of Contents
5. Functional Interface
5.1. Power Supply
The following table describes the power interface of FM101-CG module.
Table 13. Power interface
Pin Name I/O Pin Number Description
VBAT PI 2,4, 70, 72, 74
Module power supply, 3.135V–4.4V, 3.8V is
recommended
GND G
3, 5, 11, 27, 33, 39,
45, 51, 57, 71, 73
GND, all GND pins must be grounded
Power Input
The FM101-CG module is powered on through the VBAT pin. The following figure
shows the recommended power supply design.
Figure 3. Recommended power supply design
5. Functional Interface
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