SimCom SIM7600V-H User Manual

Smart Machine Smart Decision
SIM7600V-H_User Manual_V1.00 2018-02-24
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3.1.3 Voltage Monitor
To monitor the VBAT voltage, the AT command “AT+CBC” can be used.
For monitoring the VBAT voltage outside or within a special range, the AT command
“AT+CVALARM” can be used to enable the under-voltage warning function.
If users need to power off Module, when the VBAT voltage is out of a range, the AT command
“AT+CPMVT” can be used to enable under-voltage power-off function.
Note: Under-voltage warning function and under-voltage power-off function are disabled by
default. For more information about these AT commands, please refer to Document [1].
3.2 Power on/Power off/Reset Function
3.2.1 Power on
Module can be powered on by pulling the PWRKEY pin down to ground.
The PWRKEY pin has been pulled up to dVDDinternally, so you does not need to pull it up
externally. It is strongly recommended to put a100nF capacitor and an ESD protection diode close
to the PWRKEY pin. Please refer to the following figure for the recommended reference circuit.
47K
PWRKEY
Power
On off logic
Diode
dVDD
MODULE
100Ω
100nF
4.7K
Turn on /off
impulse
Figure 8: ReferencePower on/off circuit
The power-on scenarios are illustrated in the following figure.

SimCom SIM7600V-H Specifications

General

Brand	SimCom
Model	SIM7600V-H
Category	Control Unit
Language	English