Power Off - SIMCom Wireless Solutions SIM7600A-H User Manual

VBAT
PWRKEY
(Input)
STATUS
(Output)
UART Port
USB Port
Table 8: Power on timing and electronic characteristic
Symbol Parameter
The time of active low level impulse of PWRKEY
T
on
pin to power on module
The time from power-on issue to STATUS pin
T
on(status)
output high level(indicating power up ready )
T The time from power-on issue to UART port ready
on(uart)
T The time from power-on issue to USB port ready
on(usb)
V Input high level voltage on PWRKEY pin
IH
V Input low level voltage on PWRKEY pin
IL
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
●
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: If the temperature is outside the range of -30~+80 , some warning will be reported via
AT port. If the temperature is outside the range of -40~+85 , Module will be powered off
automatically.
SIM7600A-H_User Manual_V1.00
T
on
Undefined
Undefined
Figure 9: Power on timing sequence
AT+CPOF
"
".
Smart Machine Smart Decision
T
on(status)
T
on(uart)
T
on(usb)
Min. Typ.
100 500
22 -
20
20
0.6 0.8
-0.3 0
".
℃
℃
23
Active
Active
Max. Unit
- ms
-
s
s
s
1.8 V
0.5 V
2017-11-24