In SX Microcontrollers, SX/B Compiler and SX-Key Tool, phipi wrote:

Guenther,

One thing I've always wondered about using a port pin, as you describe, to pull /MCLR low: When the port pins are tri-stated, thus releasing /MCLR, is the reset process far enough along at that point to continue reliably without /MCLR having to remain low? Or would a more prudent approach involve driving one of those undervoltage reset chips with a built-in time delay?

I've always used the WDT method to do a software a reset. The WDT should be part of any a well-written SX program anyway. Using it to force a reset is just a bonus! Plus, you can tell at reset that that's what caused it and take, perhaps, a different course of action on restart.

-Phil

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