Smart Machine Smart Decision
SIM5360_Hardware Design_V1.01
2013-11-22
32
Figure 21: SD interface circuit
3.5
USIM Interface
The USIM provides the required subscription verification information to allow the mobile equipment to
attach to a GSM or UMTS network. Both 1.8V and 3.0V SIM Cards are supported.
3.5.1
Pin description
Table 12: Electronic characteristic
Table 13: Pin description
Pin name
3.0V mode
1.8V mode
Min
Typ
Max
Min
Typ
Max
V_USIM
2.7
3.00
3.3
1.65
1.8
2.0
USIM_RESET
0.8* V_USIM 3.00
V_USIM
0.8* V_USIM
1.8
V_USIM
USIM_CLK
0.7* V_USIM 3.00
V_USIM
0.8* V_USIM
1.8
V_USIM
USIM_DATA
0.7* V_USIM 3.00
V_USIM
0.8* V_USIM
1.8
V_USIM
Pin name
Pin
Description
USIM_CLK
19
USIM Card Clock
USIM_RESET 18
USIM Card Reset
USIM_DATA
17
USIM Card data I/O, which has been pulled up with a 22kR resistor to
V_USIM in module. Do not pull up or pull down in users’ application
circuit.