Posted on February 16, 2017 at 23:54I want to use the STM6600 controller to manage the power ON/OFF of my microcontroller system. In the specific I want:
- Turn ON the system simply pushing a button.
- Turn OFF the system simply pushing the same button.
- Force the power OFF pushing and holding the same button.
I read at pg. 5 on the STM6600
/external-link.jspa?url=http%3A%2F%2Fwww.st.com%2Fcontent%2Fccc%2Fresource%2Ftechnical%2Fdocument%2Fdatasheet%2F1f%2F9e%2F3b%2F43%2Fec%2F04%2F44%2F71%2FCD00226957.pdf%2Ffiles%2FCD00226957.pdf%2Fjcr%3Acontent%2Ftranslations%2Fen.CD00226957.pdf
that
'By a long push of one button (&sharpPB) or two buttons (&sharpPB and &sharpSR) either a reset is asserted or power for the application is disabled depending on the option used.'
It says that pushing one button (&sharpPB) OR two button
(&sharpPB and &sharpSR) I can disable the main power
Then at pg. 10 it says
'A short push of the push-button during normal operation can initiate an interrupt through
debounced &sharpINT output (see Figure 14) and a long push of &sharpPB and &sharpSR simultaneously can
either assert reset output &sharpRST (see Figure 18) or deassert the EN or &sharpEN output (see
Figure 19) based on the option used.'
In this case it says that, to disable the EN signal, I have NECESSARILY to push two button: the &sharpPB and the &sharpSR simultaneously.
Now I'm a bit confused. If I want use only one push button to have the behaviour described above, I have to connect to ground permanently the &sharpSR input of the STM6600 controller?
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