PigPOg (Simon) wrote...
Can anyone suggest a drop-in replacement for the now obsolete Xicor
X22C12P 256x4 Non-volatile 18 pin SRAM? Or, maybe a reliable obsolete
IC supplier in the UK that might be able to help.
Xicor first suggested the x20c04 as a replacement for the x22c12
(but not a drop-in replacement), then they discontinued that part
without any suggested replacement. Xicor was bought by Intersil
some time ago. Now they're interested in EEpots, and in larger
nonvolatile memory, which they call Alterable EEPROMs. Their
x28hc64 is the smallest part, with 8k-bytes in a 28-pin package.
Seiko and Catalyst make nonvolatile memory, and had parts similar
to the old Xicor parts (e.g., Seiko's 22h12 and Catalyst's 22c12),
but they've been discontinued. Catalyst still offers a smaller
nonvolatile memory, the cat22c10, which is 64x4. Go figure.
Sorry, Simon.
