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Pinout and I/O Description
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An example circuit with an external power switch and an on/off push-button is shown
below.
The module can be put in standby by either:
•
Entering the
exePowerMode, standby
user command;
•
Driving the ONOFF pin low for at least 50ms (i.e. pressing the button for at least
50ms).
After standby is requested, the module terminates all running processes, unmounts the
disk, and drives the PMIC_ON_REQ pin low to turn off the main power supply (VDD_3V3).
The module power consumption in standby is <5mW.
When in standby, driving the ONOFF pin low for at least 50ms wakes up the module. The
module restarts in the configuration stored in the boot configuration file.
The ONOFF pin is internally pulled up and has a built-in debouncing circuit. It can be
connected to a push-button (level low when button pressed).
