Emax

ok
  thanks


At 28-11-2008 21:11, you wrote:

>Actually an EPROM can be burned many times but must be erased between
>times in a UV Eraser if you wish to re-program the IC with a new
>program.
>
>There are OTP (One-Time-Programmable) EPROMs, but usually have to buy
>those in very large qty as you are doing "production run".
>
>If you were merely changing a few bits (like the SE upgrade might be
>doing), then you would not necessarily have to reprogram the whole
>EEPROM, just change those few bits.
>
>Regards,
>Ted