Tim Wescott wrote:
Dave Platt wrote:

In article ,
Tim Wescott wrote:


Can someone with experience with the part tell me if there are
sufficient differences between the PIC 16F84 and the 16F84A to cause
problems during EEPROM write?



I suggest you go right to the horses's mouth: the 84-84A migration
guide is at http://ww1.microchip.com/downloads/e...Doc/30072b.pdf

It looks to me as if there are some voltage, and timing differences
involving access to the EEPROM. Dunno whether that's the cause of
your lockups, though.

http://ww1.microchip.com/downloads/e...Doc/80083b.pdf is the
16F84A errata document.

Hard to say -- it's not very definitive.


Been a long time since I looked, but as I recall, they inverted the
sense of one of the pins when they went to A???
mike

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Been a long time since I looked, but as I recall, they inverted the
sense of one of the pins when they went to A???

No, they inverted the meaning of one of the bits in the configuration
word. IIRC the power-up delay timer.


Wouter van Ooijen

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