Ramtron had most of the patents on Ferroelectric RAM in the past.
Cypress acquired them many years ago.
New production FRAM is still sold on Digikey - in 5V SOIC packages. Not
cheap though:
8K x 8 - $12.72 (qty 1):
https://www.digikey.com/product-detail/en/cypress-semiconductor-corp/FM16W08-SGTR/428-3774-1-ND/6181520
32K x 8 - $19.54 (qty 1):
https://www.digikey.com/product-detail/en/cypress-semiconductor-corp/FM18W08-SGTR/428-3775-1-ND/6181516
Completely non-volatile. Faster than most SRAM of the day (130ns cycle
time). And good for 100+ trillion write cycles and more than a century
of endurance.
-Alan
On 2018-12-15 05:19, Paul Birkel via cctech wrote:
Perhaps Cypress FM1808 (32Kx8). Obsolete, but available on eBay. SOP
for a bit of extra challenge!
-----Original Message-----
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Rod
G8DGR via cctech
Sent: Saturday, December 15, 2018 4:22 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Core memory emulator using non volatile ram.
I have an idea to produce an MM-8 clone using RAM that acts like core
when turned off.
Can anybody suggest a chip that will do this?
Rod Smallwood
Sent from Mail for Windows 10
