> During the test of the new Xwisp2, I also noticed that for
> new device like 12F635/16F684, I never have the problem even 
> though the chip is configured as INTOSC and internal /MCLR. 
> The programming specification (DS41204E) specifically mentions 
> that Vdd needs to be power down before Vpp for this kind
> of configuration. For 12F629/675 with the same configuration,
> Wsip628 does have the problem and I need to erase them first
> before programming.
> 
> Is this somewhat related to Wisp628 firmware or something else?

Not that I know. Note that the programming specs more or less say 'if
you apply this sequence the chip will program', they don't say 'they
won't program with any other sequence'.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 

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