Quectel LTE Cat M1 & Cat NB2 & EGPRS Module : Product Info : Page 41

LPWA Module Series

BG600L-M3 Hardware Design

BG600L-M3_Hardware_Design 40 / 83

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

If (U)SIM card detection function is not needed, please 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 15: Reference Circuit of (U)SIM Interface with a 6-Pin (U)SIM Card Connector

In order to enhance the reliability and availability of the (U)SIM card in applications, please follow the

criteria below in (U)SIM circuit design:

 Keep the placement of (U)SIM card connector as close to the module as possible. Keep the trace

length as less than 200 mm as possible.