Hardware Design

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SIM8200EA-M2 card Hardware Design _V1.01 27 2019-06-27
V
OL
Low-level output voltage
0 0 0.45 V
Table 12: UIM electronic characteristic 2.85V mode (UIM-PWR=2.85V)
Symbol Parameter
Min. Typ. Max. Unit
UIM-PW
R
LDO power output voltage
2.75 2.85 3.05 V
V
IH
High-level input voltage
0.65*UIM-PWR - UIM-PWR +0.3 V
V
IL
Low-level input voltage -0.3 0 0.25*UIM-PWR V
V
OH
High-level output voltage
UIM-PWR -0.45 - UIM-PWR V
V
OL
Low-level output voltage
0 0 0.45 V
It is recommended to use an ESD protection component such as ESDA6V1-5W6 produced by ST
(www.st.com ) or SMF12C 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.
Module
TVS
UIM-PWR
UIM-CLK
UIM-DATA
UIM-RESET
VCC GND
RST VPP
CLK I/O
22Ω
100nF
C707 10M006 512
USIM Socket
0Ω
22Ω
22pF
(NC)
22pF
(NC)
22pF
(NC)
Figure 13: USIM interface reference circuit
The SIM Detect pin is used for detection of the UIM card hot plug in. User can select the 8-pin
UIM card holder to implement UIM card detection function.
The following figure shows the 8-pin SIM card holder reference circuit.
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