Cydrome Leader wrote in
:

Ian Field wrote:


"Slater" wrote in message
...
Is it possible to damage an EPROM by exposing it to UV light for too
long? What if a portion of the EPROM stays unprogrammed ('FF') and
the chip goes through some program-erase cycles? The unprogrammed
area should fail sooner or later, shouldn't it?


The old ceramic packaged one's must be getting hard to find these
days - can flash ROMs be put in their place?

how long can those old ceramic+window things keep their memory? Some
spec sheets indicate some random number of decades, but is any of this
true?



flash memory(NOT a "ROM" aka Read-Only Memory) is not going to have the
same pinouts,because one pin has to have the write enable command that a
PROM lacks.

--
Jim Yanik
jyanik
at
localnet
dot com