Billion Electric Co. Ltd. BIL-SIM7100C Benutzerhandbuch
Smart Machine Smart Decision
SIM7100C_User Manual_V1.01
2015-09-19
28
Table 9: Power on timing
Symbol
Parameter
Time value
Unit
Min.
Typ.
Max.
Ton
The time to pull PWRKEY down to power on
180
500
-
ms
TpD+
The time to indicate connecting with the network
-
-
5
s
Tpw+
The time to indicate the module is powered on
completely
completely
-
-
0.5
s
Tuart
The time to enable UART
-
-
8
s
Tusb
The time to enable USB
-
-
10
s
Note: Module could be automatically power on by connecting PWRKEY pin to Low level directly.
Before designing, please refer to Document [27] for more detail.
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 SIM7100C. 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.
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 SIM7100C by pulling the PWRKEY pin down
●
Method 2: Power off SIM7100C by AT command
User can power off the SIM7100C by pulling PWRKEY down for a specific time. The power off scenario
is illustrated in the following figure.
is illustrated in the following figure.