Figure 25: Amphenol SIM card socket
Table 16: Amphenol USIM socket pin description
Pin Signal Description
C1 USIM_VDD
SIM Card Power supply, it can identify automatically the
SIM Card power mode ， one is 3.0V±10%, another is
1.8V±10%.
C2 USIM_RST SIM Card Reset.
C3 USIM_CLK SIM Card Clock.
C5 GND Connect to GND.
C6 VPP Connect to USIM_VDD
C7 USIM_DATA SIM Card data I/O.
I2C is used to communicate with peripheral equipments and can be operated as either a transmitter or
receiver, depending on the device function. Use AT Commands “AT+CRIIC and AT+CWIIC” to read/write
register values of related peripheral equipments connected with I2C interface.
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