User's Manual

H350 LGA Serials Module Hardware User Manual Page of
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100 GND
101 GND
102 GND
103 GND
104 GND
105 GND
106 GND
107 GND
108 GND
109 GND
110 GND
H：High Voltage Level
L：Low Voltage Level
PD：Pull-Down
PU：Pull-Up
T：Tristate
OD：Open Drain
PP：Push-Pull
5 Hardware Interface
5.1 Power Interface
5.1.1 VBAT
H350 module requires a 3.3 V~ 4.2V DC power supply to provide 2A as GSM transmitter maximum
current.