Power On/Off Operation; Turning On The Module - Fibocom G510 Hardware User Manual

3.4 Power On/Off
The module power on and off is the two primary phases, which are related at the interface connector by
the hardware signals POWER_ON, VDD.
The POWER_ON signal is main control .The VDD level indicates whether module is powered on or off.
When this signal is disabling (0V), module is powered-off. When it is output (2.85V), module is
powered-on.
The following table shows definitions of the pins for Power on/off.
Pin No.
14
13

3.4.1 Turning on the Module

When the module is powered off, the PMU operates at low power mode, with only the RTC timer active.
The module will power on again when the POWER_ON signal is falling edge. Asserting the POWER_ON
signal low for a minimum of 800 milliseconds will turn module on.
The following figure shows power on succeeded.
The following figure illustrates the module power on is failed when asserting the POWER_ON signal low
G510 Hardware User Manual
Signal Name
POWER_ON
VDD
Figure 3- 2 Power on succeed
Description
Power on and off module
Low level activated
Illustrating module start up
LDO power output 0V : module is power off
LDO power output 2.85V : module is start up
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