Core memory emulator using non volatile ram.

[Anders Nelson]

Texas Instruments' MSP430 MCUs use FRAM. This one for example:
http://www.ti.com/product/msp430fr5969 costs ~$2.30.

You could do some emulation in the same package, too. Not sure what your
speed requirements are of course!

=]
--
Anders Nelson

+1 (517) 775-6129

www.erogear.com


On Sat, Dec 15, 2018 at 10:37 AM alan--- via cctalk <cctalk at classiccmp.org>
wrote:

>
> 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-bounces at 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
>