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CLM920_NC3_LTE Module hardware manual
Shanghai Yuge Information Technology co., LTD
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Figure 3-18 Network indicator circuit diagram
The brightness of the network indicator can be adjusted by adjusting the current limiting
resistor R. The current can be adjusted up to 40mA.
3.10 Module status indication
The CLM920 NC3 module provides a pin as a working status indicator for the module.
This pin can be used to connect to a GPIO or LED with pull-up for the module's power-on
status indication. The drive current should be less than 0.8mA. , STATUS pin will output low
level, and the rest will be high impedance state.
Pin
Signal name
I/O
Description
Remarks
61
STATUS
DO
Module power on status indication
External pull-up
The following figure shows the STATUS reference circuit design:
Figure 3-19 STATUS Pin Reference Circuit