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LPWA Module Series
BG772A-GL Hardware Design
BG772A-GL 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 [4] for more details.
The following figure shows a reference design of (U)SIM interface with an 8-pin (U)SIM card connector.
Figure 13: Reference Circuit of (U)SIM Interface with an 8-Pin (U)SIM Card Connector
If (U)SIM card detection function is not needed, keep USIM_DET unconnected. A reference circuit for
(U)SIM interface with a 6-pin (U)SIM card connector is illustrated in the following figure.
Figure 14: Reference Circuit of (U)SIM Interface with a 6-Pin (U)SIM Card Connector
To enhance the reliability and availability of the (U)SIM card in applications, follow the criteria below in
(U)SIM circuit design:
BG772A-GL_Hardware_Design
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