> Van: MacBrick (Ronald Leenes) <macbrick@KNOWARE.NL>
> Aan: PICLIST@MITVMA.MIT.EDU
> Onderwerp: unable to erase 16F84's
> Datum: donderdag 15 juli 1999 10:16
>
> Hi,

Hello Ronald,

> I have some 7 16F84's that I can not erase. It may be that I've
> programmed them with code protection on. I know this was discussed
> before, but I lost my archive.
> Can anyone briefly explain if setting cp on on a 16F84 makes it
> unerasable.
> Is there any way to use my 7 chips again?

Dont worry !   it IS erasable !

If you are using standard MPLAB software, all should go automatically ( IF
you select the right controller in it's IDE that is ...).

If you have a Home-brew programmer, the erasing of a Code-protected 16x84
is described in document DS30189D - page 9 : Disabeling code-protection.
The document's title is : PIC16C84 - EEProm memory programming
specification.

Greetz,
  Rudy Wieser

  caisson
  AT
  telebyte
  DOT
  nl