LPM2100 mg NB Module Hardware User Guide
Shanghai Yuge Information Technology Co., Ltd.
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Figure 3-15 eDRX power saving technology
3.7 SIM interface
The LPM2100 mg series module provides an ISO 7816-3 compliant SIM card interface.
The SIM card power supply is provided by the module's internal power manager and supports
1.8V/3.0V.
Table 3-7 SIM card signal definition
Pin Signal name IO
Description
Remarks
2
SIM_DECT* DI
SIM card hot plug
detection
Internal level has been pulled up
10
SIM_GND
SIM card ground
GND
11
SIM_DATA
IO
SIM card bus data
Internal 10K pull-up resistor
12
SIM_RST
DO SIM card reset output
Keep away from interference
sources
13
SIM_CLK
DO SIM card clock output
Keep away from interference
sources
14
SIM_VDD
PO
Output to the SIM card
supply voltage
Keep away from interference
sources
3.7.1 SIM card reference circuit
The LPM2100 mg series modules do not have a SIM card slot. Users need to design a
SIM card slot on their own interface board.
SIM card interface reference circuit is as follows
: