Sim Interface; Sim Application Guide - SimCom SIM7000G User Manual

3.5

SIM Interface

SIM7000 supports both 1.8V and 3.0V SIM Cards.
Table 11: SIM electronic characteristic in 1.8V mode (SIM_VDD=1.8V)
Symbol Parameter
SIM_V
LDO power output voltage
DD
V High-level input voltage
IH
V Low-level input voltage
IL
V High-level output voltage
OH
V Low-level output voltage
OL
Table 12: SIM electronic characteristic 3.0V mode (
Symbol Parameter
SIM_V
LDO power output voltage
DD
V High-level input voltage
IH
V Low-level input voltage
IL
V High-level output voltage
OH
V Low-level output voltage
OL
3.5.1

SIM Application Guide

It is recommended to use an ESD protection component such as ESDA6V1W5 produced by ST
(www.st.com ) or SMF15C produced by ON SEMI (www.onsemi.com ). Note that the SIM
peripheral circuit should be close to the SIM card socket. The following figure shows the 6-pin
SIM card holder reference circuit.
SIM7000 _Hardware Design _V1.00
Min.
1.75
0.65*SIM_VDD
-0.3
SIM_VDD -0.45
0
Min.
2.75
0.65*SIM_VDD
-0.3
SIM_VDD -0.45
0
Figure 19: SIM interface reference circuit
Smart Machine Smart Decision
Typ. Max.
1.8 1.95
- SIM_VDD +0.3
0 0.35*SIM_VDD
- SIM_VDD
0 0.45
SIM_VDD
=2.95V)
Typ. Max.
2.95 3.05
- SIM_VDD +0.3
0 0.25*SIM_VDD
- SIM_VDD
0 0.45
Unit
V
V
V
V
V
Unit
V
V
V
V
V
2017-05-23