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'[PIC]: 18F452 internal BOR or BOR + MCP809 ?'
2002\08\26@175131 by Spehro Pefhany

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Hi, all ;-

Any thoughts on whether an external reset chip adds anything in terms
of reliability of start-up, given that the internal BOR circuit will
be enabled. Vdd will probably be 5.0V nominal.

I'd like to avoid the cost if it adds nothing and to avoid the
issue of high voltage (VIHH) on /MCLR during ISP.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
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2002\08\26@180623 by mike

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The usual reason you need external BOR is where you can't afford the
somewhat high draw of the internal ones, i.e. pretty much any battery
application. I don't know if tbe 18C's are any better than the
ridiculously power-hungry 16Cx brownouts.

ISP problems can be fixed with a series resistor.

On Mon, 26 Aug 2002 17:57:54 -0400, you wrote:

{Quote hidden}

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