User's Manual
Table Of Contents

H350 LGA Serials Module Hardware User Manual Page of
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4.2.2 Pin Description
The logic electrical lever of H350 is 1.8V. The following table shows H350 pin description:
Pin# Pin Name I/O Reset Value Idle Value Description
Power Supply
61 VBAT I
Module main power input, voltage
range: 3.3V ~ 4.2V
62 VBAT I
63 VBAT I
64 VBAT I
65 VBAT I
66 VBAT I
59 VIO O
1.8V output
44 VRTC I/O
Backup battery power input.
Power ON/OFF Signal
45 POWER_OFF I PU PU
Power off signal, 200K resistor pulled
up inside the module
47 POWER_ON I PU PU
Power on signal, 200K resistor pulled
up inside the module
Reset Signal
46 RESET_ALL_N I PU PU External reset signal
USIM
27 USIM_CD I PU PU
USIM card insert detected. 390K
resistor pulled up inside the module
26 USIM_VCC O
USIM card power supply, 1.8V or
3.3V
25 USIM_RST O PP PP USIM card reset
24 USIM_CLK O PP PP USIM card clock
23 USIM_DATA I/O PU PU
USIM card data, 4.7K resistor pulled
up inside the module
High Speed SIM