G'day all,

I've been off the piclist lately but found this in the 9605 log
and I see this question on non eraseable code protect devices
is so far answered.


Eric T. Brewer wrote
[
>
>Would you please provide a list of such devices?

>Thanks,
>eric

]

Eric,

All the following "A" suffix devices are "no erase" code protect
devices.

16C62A
16C64A
16C65A
16C73A
16C74A

The following three are effectively "A" revisions but they do not
have the "A" suffix. (It is likely revisions for these parts will
start with the "B" suffix.)

16C63
16C72
16C620
16C621
16C622

I strongly suspect these devices should be on the list
but don't know for certain (yet!):

16C70
16C71A

In the future there maybe a 16C61A and 16C60 also.
(My guess)

Misc others are:

PIC14000
PIC17C43
PIC17C44

It is a fair bet all "JW" devices from now on will have "no-erase"
code protection except for the 5x devices.

As far as I can tell none of the planned 5x "JW" revisions have
"no-erase" code protection.

In addition to "no erase" code protection, all the above devices
have the state of the PWRTE config bit reversed from earlier
devices. This means the PWRTE is different going from a 16C74
to a 16C74A.

No need to worry though if you use the correct header file for
the target PIC.



Jim Robertson
NEWFOUND ELECTRONICS

P.S. From version 3.05 onwards, my warp-3 will not allow "accidental"
programming of the code protection fuses even if they are on in the
HEX file. Use the /L- switch to bypass this safety.