User Guide

LM960 HW Design Guide
1VV0301485 Rev. 15 Page 47 of 88 2020-08-13
Information – VBATT must not be removed before Shutdown
Indicator goes LOW.
Warning – Not following the recommended shut-down procedures
might damage the device and consequently void the warranty.
6.3.2.2. Fast Shutdown by GPIO
If properly configured, one of GPIO lines can be used as Fast Shutdown Trigger.
Once the Fast Shutdown Trigger senses a HIGH to LOW transition, fast shutdown is
initiated.
Then the LM960 module enters finalization state, terminates active processes and
prepares to turn off safely. As shown in below figure, when the module is ready to be
turned off, it will be indicated via Shutdown Indicator.
Please refer to the AT User Guide for more detail about enable Shutdown Indicator and
Fast Shutdown Trigger.
Fast Shutdown by GPIO
The DTE should monitor the status of Shutdown Indicator to proceed fast power-off.