User's Manual

SIM7600G User manual
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Figure 10: Power on timing sequence
Table 8: Power on timing and electronic characteristic
Symbol
Parameter
Min.
Typ.
Max.
Unit
T
on
The time of active low level impulse of PWRKEY pin to
power on MODULE
100
500
-
ms
T
on(status)
The time from power-on issue to STATUS pin output
high level(indicating power up ready )
15
16
-
s
T
on(uart)
The time from power-on issue to UART port ready
13
14
-
s
T
on(vdd_aux)
The time from power-on issue to VDD_AUX ready
2.5
-
s
T
on(usb)
The time from power-on issue to USB port ready
11
12
-
s
V
IH
Input high level voltage on PWRKEY pin
0.6
0.8
1.8
V
V
IL
Input low level voltage on PWRKEY pin
-0.3
0
0.5
V
3.2.2 Power off
The following methods can be used to power off MODULE.
● Method 1: Power off MODULE by pulling the PWRKEY pin down to ground.
● Method 2: Power off MODULE by AT command “AT+CPOF”.
● Method 3: over-voltage or under-voltage automatic power off. The voltage range can be set by AT
command “AT+CPMVT”.
● Method 4: over-temperature or under-temperature automatic power off.
NOTE