Hardware+Design V1.07

Table Of Contents
Smart Machine Smart Decision
Note: Module could be automatically power on by connecting Power ON pin to Low level directly.
Before designing, please refer to Document [27] for more detail.
3.2.2 Power off Sequence
The following methods can be used to power down SIM5320. These procedures will make module
disconnect from the network and allow the software to enter a safe state, and then save data before
completely powering the module off.
Method 1: Power off SIM5320 by pulling the POWER_ON pin down
Method 2: Power off SIM5320 by AT command
User can power off the SIM5320 by pulling POWER_ON down for a specific time. The power off
scenario is illustrated in the following figure.
Figure 17: Power off timing sequence
Table 7: Power off timing
Time value
Parameter Description
Min. Typ. Max. Unit
Toff The time pulling POWER_ON down to power off 0.5 - 5 s
SIM5320_Hardware Design_V1.07 2012-09-21
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