ICSP and Reset chips

SherpaDoug · Joined: 07 Sep 2003 Posts: 1640 Location: Cape Cod Mass USA

When using a PIC with VPP and MCLR on the same pin, does anyone use the supervisory chips like a MAX6585 or MAX806 ? Those MAX chips only tolerate +6V on the open collector output so I suspect they would blow when VPP is applied to the MCLR pin for programming. Do I have to use jumpers or is there another family of supervisory chips I can use? Or does everyone just use a resistor to VCC?
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PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Microchip AN820 -- System Supervisors in ICSP Architectures
http://ww1.microchip.com/downloads/en/AppNotes/00820a.pdf

TB087 -- same topic
http://ww1.microchip.com/downloads/en/AppNotes/91087a.pdf

SherpaDoug · Joined: 07 Sep 2003 Posts: 1640 Location: Cape Cod Mass USA

Thanks, I should have checked the Microchip apnotes.
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The search for better is endless. Instead simply find very good and get the job done.