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H330S Hardware User Manual
Page 28 of 44
5.2.3 Power off Signal
When setting POWER_OFF signal low, the module’s PMU (Power Management Unit) will be reset. Then,
the module will turn to shutdown state from operation state. The timing sequence requirements of the
pulse are as follows:
Condition
Unit
Pulse Width
100
300
3000
ms
The timing sequence control is shown in the diagram below:
Figure 5- 4 Timing Control
The recommended design of POWER_OFF signal is as follows:
Figure 5- 5 POWER_OFF Reference Design
