At 02:44 PM 9/9/96 +1000, you wrote:
>>We are stopping development immediately using the 16C84 unit!
>>
>>Does anyone know of any other PICs that are MUCH more secure???

>
>        In any case, the security hole with the 'C84 is strongly
>        related to its use of EEPROM code memory.  So as a *general*
>        statement the EPROM PIC's don't suffer this problem.

Agreed! No security is "bullit proof" but the 16C84 is particularly
 problem, as Bob pointed out, because of the EEPROM memory.

>
>        You will probably find that a 16C61 + 24LC01 is actually
>        cheaper than a 16C84 (but takes more pcb space and costs
>        two I/O lines).

Or a 16C621 is cheaper again and provides better security [IMCO] than the
older 16C61. Also consider the emerging 16C55x parts for the same reasons.

>
>___Bob
>

Jim