Application Interfaces; U)Sim Interface - Quectel BG95 A-GL Series Hardware Design

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Application Interfaces

4.1. (U)SIM Interface

BG95xA-GL module supports 1.8 V (U)SIM card only. The circuitry of (U)SIM interfaces meet ETSI and
IMT-2000 requirements.
BG953A-GL supports integrated iSIM. After enabling this function, you do not need to design the (U)SIM
interface, which helps to improve the security of the device and reduce the PCB area. For more details
about iSIM function, please contact with local network service providers.
Table 14: (U)SIM Interface Pin Definition
Pin Name Pin No.
USIM_DET 42
USIM_VDD 43
USIM_RST 44
USIM_DATA 45
USIM_CLK 46
USIM_GND 47
BG95xA-GL module supports (U)SIM card hot-plug via USIM_DET, and both high-level and low-level
detections are supported. The function is disabled by default. See AT+QSIMDET in document [3] for
more details.
The following figure illustrates a reference design of (U)SIM interface with an 8-pin (U)SIM card
connector.
BG95xA-GL_Hardware_Design
I/O Description
DI (U)SIM card hot-plug detect
PO (U)SIM card power supply
DO (U)SIM card reset
DIO (U)SIM card data
DO (U)SIM card clock
- Specified ground for (U)SIM card
LPWA Module Series
Comment
1.8 V power domain.
If unused, keep this pin open.
Only 1.8 V (U)SIM card is
supported.
1.8 V power domain.
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