What applications note? Which processor?

Searching on TC54VC at Digi-Key finds 28 different versions with voltage
settings ranging from 1.4 to 4.5 Volts.

Paul

> -----Original Message-----
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Ian McLean
> Sent: Wednesday, March 05, 2003 8:04 PM
>
> Somebody help me through this bewildering part selection issue !
>
> I want to get some reset controllers for PIC micro's for SLR battery
> operated applications, but finding the right part seems to be a problem.
>
> The application note from Microchip says to use the TC54 CMOS
> output variety
> as a PIC MCLR controller, but the only part in the TC54VC series
> (as apposed
> to the TC54VN open-drain output variety) that I can find is the
> TC54VC2702EZB which specifies a 2.7V trip voltage.  Is this OK?  I would
> have thought that a trip voltage of 4.3V or 4.5V would have been
> appropriate
> for the PIC, but I can only find these in the open-drain TC54VN variety.
>
> Advice please !
>
> Rgs
> Ian

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