ROM Version is the most in-vulnerable. OTP is a EPROM version without the
window, also known as PROM. ROM chip is produced under a custom made MASK
config.

Marcelo

Craig wrote:

>So what you are saying is that the OTP devices are the most in-vulnerable?
>
>> -----Original Message-----
>> From: pic microcontroller discussion list
>> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Wagner Lipnharski
>> Sent: November 24, 1999 11:03 AM
>> To: PICLIST@MITVMA.MIT.EDU
>> Subject: Re: REPHRASED--In which PICs is the copy protection most
>> easilybreached?
>>
>>
>> If you consider the fact that any "field programmable unit" (eprom,
>> eeprom and flash) has a kind of "volatile" protection bits, while the
>> ROM type has fuses (that are not reversible), then all e2prom, eprom and
>> flash devices can be considered "more vulnerable" to piracy.
>> Wagner
>