LPWA Module Series
BG952A-GL_QuecOpen_Hardware_Design
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3.11. (U)SIM Interface
The module supports 1.8 V (U)SIM card only. The (U)SIM interface circuitry meets ETSI and IMT-2000
requirements.
Table 13: Pin Definition of (U)SIM Interface
Pin Name
Pin
No.
I/O
Description
Comment
USIM_DET
42
DI
(U)SIM card hot-plug detect
1.8 V power domain.
USIM_VDD
43
PO
(U)SIM card power supply
Only 1.8 V (U)SIM card is
supported.
USIM_RST
44
DO
(U)SIM card reset
1.8 V power domain.
USIM_DATA 45
DIO
(U)SIM card data
1.8 V power domain.
USIM_CLK
46
DO
(U)SIM card clock
1.8 V power domain.
USIM_GND
47
Specified ground for (U)SIM
card
The module supports (U)SIM card hot-plug via USIM_DET, and both high and low level detections are
supported. The function is disabled by default, and see
AT+QSIMDET
in
document [3]
for more details.
The following figure shows a reference design of (U)SIM interface with an 8-pin (U)SIM card connector.
Figure 14: Reference Circuit of (U)SIM Interface with an 8-Pin (U)SIM Card Connector