LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
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4
Application Interfaces
4.1. (U)SIM Interface
BG950A-GL/BG951A-GL support 1.8 V (U)SIM card only. The circuitry of (U)SIM interfaces meet
ETSI
and
IMT-2000
requirements.
Table 12: Pin Definition of (U)SIM Interface
BG950A-GL/BG951A-GL supports (U)SIM card hot-plug via the USIM_DET, and both high-level and
low-level detections are supported. The function is disabled by default, and refer to
AT+QSIMDET
in
document [3]
for more details.
Pin Name
Pin No. I/O
Description
Comment
USIM_DET
42
DI
(U)SIM card hot-plug detect
1.8 V power domain.
If unused, keep this pin open.
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
USIM_CLK
46
DO
(U)SIM card clock
USIM_GND
47
Specified ground for (U)SIM card
