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3.7
USIM Interface
MODULE supports both 1.8V and 3.0V USIM Cards.
Table 12: USIM electronic characteristic in 1.8V mode (USIM_VDD=1.8V)
Symbol
Parameter
USIM_
LDO power output voltage
VDD
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 13: USIM electronic characteristic 3.0V mode ( USIM_VDD =2.95V)
Symbol
Parameter
USIM_
LDO power output voltage
VDD
V
High-level input voltage
IH
V
Low-level input voltage
IL
V
High-level output voltage
OH
V
Low-level output voltage
OL
3.7.1
USIM 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 USIM
peripheral circuit should be close to the USIM card socket. The following figure shows the 6-pin
SIM card holder reference circuit.
SIM7600NA_user manual _V1.00
Smart Machine Smart Decision
Min.
1.75
0.65*USIM_VDD
-0.3
USIM_VDD -0.45
0
Min.
2.75
0.65*USIM_VDD
-0.3
USIM_VDD -0.45
0
36
Typ.
Max.
1.8
1.95
-
USIM_VDD +0.3
0
0.35*USIM_VDD
-
USIM_VDD
0
0.45
Typ.
Max.
2.95
3.05
-
USIM_VDD +0.3
0
0.25*USIM_VDD
-
USIM_VDD
0
0.45
2020-1-7
Unit
V
V
V
V
V
Unit
V
V
V
V
V
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