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Subject: Re: RTC alarm questions
From: Linus Nielsen Feltzing (
Date: 2002-12-30

Uwe Freese wrote:
> Hello,
> The RTC (Recorder) has an alarm function. Is the output pin for this
> alarm connected to the cpu or not?

It seems that it is, to the IRQ0 pin.

> Is the alarm used for some timed functions at the moment?


> My idea was: If the alarm pin is not connected anywhere, I'd like to
> make a modification that can turn the AJB on. I would add a
> transistsor and connect it somehow to the alarm output pin and the
> "ON" button so that an alarm has the same effect as pressing "ON".

Nice idea. Try it.


Page was last modified "Jan 10 2012" The Rockbox Crew