Quectel UC20 User Manual page 21

Table 7: Pin Assignment of J702
J702 Pin Signal Name
C1 USIM_VDD
C2 USIM_RST
C3 USIM_CLK
C5 GND
C6 VPP
C7 USIM_DATA
CD1 GND
CD2 USIM_PRESENCE
UMTS&LTE_EVB_User_Guide
Figure 15: Pins Assignment of USIM Card Holder
I/O
O
O
O
/
/
I/O
GND
I
UMTS/HSPA/LTE Module Series
UMTS&LTE EVB User Guide
Function
USIM/SIM card power
USIM/SIM card reset
USIM/SIM card clock
Ground
Not connected
Data line, bi-directional
USIM card detection
USIM card detection
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