Smart Machine Smart Decision
SIM5360_Hardware Design_V1.01
2013-11-22
27
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 SIM5360. 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 SIM5360 by pulling the POWER_ON pin down
●
Method 2: Power off SIM5360 by AT command
User can power off the SIM5360 by pulling POWER_ON down for a specific time. The power off
scenario is illustrated in the following figure.
STATUS_LED
(Output)
V
IL
<0.3V
Toff
POWER_ON
( Input)
Tpd-
Serial Port
Undefined
Active
USB Port
Undefined
Active
POWER_ON_IND
(VREG_AUX)
(Output)
Tpw-
Tuart_off
Tusb_off
V
IL
<0.3V
Ton
Tona
Figure 16: Power off timing sequence
Table 7: Power off timing
Parameter
Description
Time value
Min.
Typ.
Max.
Unit
Toff
The time pulling POWER_ON down to power off
TBD
-
TBD
s