Technical data

4.20.2 RTC Alarm (ALARM)
Pin Name Direction Function
50 ALARM Output RTC Alarm
The ALARM signal is only available on GR64002.
NOTE
The Alarm output is logic output from the Wireless CPU® which is supplied from the
RTC circuitry block. This block is, in turn, supplied either from the main supply of the
Wireless CPU® or from a backup battery if the main supply is not available.
This signal is pulled up inside the Wireless CPU® to VRTC and is set low for 1s when
an Alarm is triggered.
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GR64 Integrators’ Manual
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