Bob Axtell wrote:

> BUT - if the ICD 2 doesn't work at 3.5V, I have a serious problem, as
> everything in MY foreseeable future is 3.5V.

Hi Bob,

If you ever code protect the PIC16F87/PIC16F88 and then want to reverse the
code protection bits in the future, the *only* way to do such is through a
chip erase, and Vdd must be in the range of 4.5 volts to 5.5 volts to
initiate a chip erase. This means that your board has to be designed to
handle the application of this higher Vdd to accomplish this (without
adversely affecting your 3.5 volt devices in the process).

A lot of flash PICs at the moment have this constraint. Take a look at the
programming specifications for more details.

Best regards,

Ken Pergola


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