User Guide

ME910G1 HW Design Guide
1VV0301593 Rev.7 Page 36 of 98 2021-02-02
Power On
To turn on the ME910G1 the pad ON_OFF*/WAKE* must be tied low for at least 5 second
and then released.
The maximum current that can be drained from the ON_OFF*/WAKE* pad is 0,1 mA.
ON_OFF*/WAKE* pad can make an asynchronous wakeup of the system from the PSM
Mode, before the scheduled event of timer T3412 expired.
To make asynchronous exit from PSM mode ON_OFF*/WAKE* pin must be set LOW for
at least 5 seconds.
Figure 5: Power-on Circuit; illustrates a simple circuit to power on the module using an inverted buffer
output.
Note: Do not use any pull up resistor on the ON_OFF*/WAKE* line, it
is internally pulled up. Using pull up resistor may bring to latch up
problems on the ME910G1 power regulator and improper power
on/off of the module. The line ON_OFF*/WAKE* must be connected
only in open collector or open drain configuration.
In this document all the lines that are inverted, hence have active low
signals are labelled with a name that ends with”#",”*” or with a bar
over the name.
To check if the device has powered on, the hardware line PWRMON
should be monitored.