Product Info

Automotive Module Series
AG35 Hardware Design
AG35_Hardware_Design 45 / 129
The turn on scenario is illustrated in the following figure.
V
IL
≤0.5V
V
IH
≥1.3V
VBAT
PWRKEY
≥500ms
RESET_N
STATUS
(OD)
Inactive
Active
UART
NOTE
Inactive
Active
USB
≥2.5s
≥12s
≥13s
VDD_EXT
About 100ms
Figure 13: Timing of Turning on Module
Please make sure that VBAT is stable before pulling down PWRKEY pin. The time between them is no
less than 30ms.
3.7.2. Turn off Module
Either of the following methods can be used to turn off the module:
 Normal power down procedure: Turn off the module using the PWRKEY pin.
 Normal power down procedure: Turn off the module using AT+QPOWD command.
3.7.2.1. Turn off Module Using the PWRKEY Pin
Driving the PWRKEY pin to a low level voltage for at least 650ms, the module will execute power-down
procedure after PWRKEY is released. The power-down scenario is illustrated in the following figure.
NOTE