LPM2100 bg NB Module Hardware Usage Guide
Shanghai Yuge Information Technology Co., Ltd.
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①
SIM card port level supports 1.8V and 3.0V
。
②
This module defines that the NC pin is floating and must not be used.
③
The module WAKEUP (PSM_EINT) pin voltage domain is 1.1V.
3.2.2. Module pin description
The module interface pin definition is described below
：
Table 3-1 Pin Parameter Abbreviations
Symbol sign
Description
IO
Input or output
PI
Power input
PO
Power Output
AI
Analog input
AO
Analog output
DI
Digital input
DO
Digital output
Table 3-2 Interface definition
Pin
Pin name
IO
Functional description
Remarks
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45,46
VBAT
PI
Module power supply
Input voltage
3.1~4.2V
(Low voltage
version: 2.45~4.2V)
26
VDD_EXT
PO
Internal regulated power
supply output 1.8V or 2.8V
(software can be
customized, default 1.8V)
IO voltage domain
supply
System switch control
15
RESET
DI
Hardware reset control,
active low
SIM interface
16
SIM_DECT* DI
SIM card hot plug detection Internal level has
been pulled up
