LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
39 /89
4
Application Interfaces
4.1. (U)SIM Interface
The circuitry of (U)SIM interfaces meet
ETSI
and
IMT-2000
requirements. BG950A-GL & BG951A-GL
support 1.8 V (U)SIM card only.
Table 12: Pin Definition of (U)SIM Interface
The module supports (U)SIM card hot-plug via the USIM_DET
*
pin, 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 detection
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
