User guide

M80 EVB User Guide
M80_EVB_User_Guide_V1.2 - 21 -
Note: W681360 is not assembled in the EVB board. If you want to use this function, please
assemble this component located at U301.
3.4. SIM Card
M80 provides dual SIM card interface.
3.4.1. SIM1 card interface
Figure 18 and 19 shows the schematic of SIM1 card and the pins assignment of SIM1 card
respectively. SIM1 cassette has adopted an EINT to detect the SIM card.
Figure 18: Circuit of SIM1 card
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