CLM920_RC3(RV3 RE3)LCC Series CAT1 Module Hardware Manual
Shanghai YUGE Information Technology Co., Ltd.
- 28 -
Figure 3-8 Open-collection drive start-up reference circuit
Figure 3-9 Reference circuit for key start
The CLM920_RC3 module can realize the automatic power-on mode by directly grounding
the PWRKEY pin. This startup method does not support module shutdown.
3.4.3 Module shutdown
The CLM920_RC3 module supports the following three shutdown methods.
Table 3-8 Module shutdown methods
Shutdown method Shutdown conditions
Description
Low voltage
shutdown
Power supply voltage is too low
or abnormal power down
The module does not perform
the normal shutdown process
Hardware
shutdown
Pull down the PWRKEY pin
greater than 4s
Perform a normal shutdown
process
AT command
AT command
Software shutdown
