Network Status Indication; U)Sim Interface - Quectel BC68 Manual

4.5. Network Status Indication

The NETLIGHT pin can be used to drive a network status indicator LED. A reference design is shown
below.

4.6. (U)SIM Interface

M66 supports 1.8V or 3.0V SIM/USIM cards, while BC68 supports 1.8V or 3.0V USIM cards. The pin
assignment of BC68's USIM interface and M66's (U)SIM interface is compatible.
The following figure shows a reference design for (U)SIM interface with a 6-pin (U)SIM card connector.
BC68/M66 Module
Figure 11: Reference Circuit of (U)SIM Card Interface with a 6-Pin (U)SIM Card Connector
BC68&M66_Compatible_Design
BC68/M66 Module
NETLIGHT
Figure 10: Reference Circuit of NETLIGHT
SIM_VDD
15K
SIM_GND
SIM_VDD
22R
SIM_RST
SIM_CLK
22R
22R
SIM_DATA
33pF 33pF
GND
GSM/GPRS/NB-IoT Module Series
BC68&M66 Compatible Design
VBAT
2.2K
4.7K
47K
100nF
(U)SIM Card Connector
VCC
RST
CLK
33pF
ESD
GND
GND
VPP
IO
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