EVB User Guide
M80_EVB_UGD_V1.0
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3.4.
SIM card interface
3.4.1 SIM1 card interface
1
2
3
4
5
6
7
8
Figure 7: SIM1 card interface
Table 7: Pins of SIM card interface
Pin
Signal
I/O
Description
Note
1
SIM1_PRESENCE
I
SIM card detect
2
SIM1_CLK
O
SIM card clock
3
SIM1_RST
O
SIM card reset
4
SIM1_VDD
O
SIM power
5
GND
O
GND
6
VPP
O
SIM card power output
7
SIM1_DATA
I/O
SIM card data I/O
8
SIM_DETECT
Pulled down GND with external
circuit. When the tray is present,
pin 4 is connected to pin 8.
Quectel
Confidential