At 05:49 PM 2/17/99 -0500, Scott Shidel... wrote:
>On Wed, 17 Feb 1999, Mr and Mrs James Paul wrote:
>
>>  OTP parts are really EPROM devices without a window to erase
>>  them.  ROM parts are actually Masked ROM parts.  You have to
>>  send your code to Microchip, and they hard code it into the
>>  part.  The result of this is that the parts are much cheaper
>>  than using OTP parts, if you have enough volume to justify the
>>  initial setup costs.  Hope this helps.
>>
>
>What?
>I thought that you could program OTPs yourself, but you just couldnt erase
>it once you did.  What gives?

Das what he said..  OTPs are windowless EPROMS, and they are more expensive
than ROM parts.