ME910G1 HW Design Guide
1VV0301593 Rev.3 Page 39 of 97 2020-03-24
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 1 illustrates a simple circuit to power on the module using an inverted buffer output.
Figure 1: Power-on Circuit
NOTE:
Don't 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.
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