Anyone had any experience with Ramtron FRAM

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jerryf
Posts: 11
Joined: Mon Dec 01, 2008 7:00 pm
Location: GULF BREEZE, FL

Anyone had any experience with Ramtron FRAM

Post by jerryf » Mon Dec 01, 2008 7:56 pm

Has anyone had any experience with Ramtron FM24C512-G Nonvolatile RAM.
This is supposted to be a random access nonvolital memory chip with ic2.
The device has 64,000 bytes of memory with 10 Billion Read/Writes.
Would sure like to use with swordfish.

tenaja
Posts: 4
Joined: Mon Dec 22, 2008 12:46 am

Re: Anyone had any experience with Ramtron FRAM

Post by tenaja » Mon Dec 22, 2008 12:58 am

jerryf wrote:Has anyone had any experience with Ramtron FM24C512-G Nonvolatile RAM.
This is supposted to be a random access nonvolital memory chip with ic2.
The device has 64,000 bytes of memory with 10 Billion Read/Writes.
Would sure like to use with swordfish.
I have used the 64 K-bit version with Proton+ (so I can't supply code), and was happy with it, for the most part. It's easier to use than regular eeprom, since there are no page writes or delays. OTOH, as has been discussed, the size is severely limiting and price is very high. I've since switched to a 512Kb eeprom, because Ramtron didn't offer a 512kb in serial 3.3v. Since I started out with the FRAM, the migration took some time to figure out the page handling and management--which was mandatory with only a few bytes written per day. I got an 8x larger eeprom at less than half the price.

In summary: FRAM = smaller memory sizes, pricier, higher power requirements (Vin and Iq) ... but all with faster "instant" writes and easier code.

For low volume designs that can deal with the power requirements and size restrictions, I'd use them again.

jerryf
Posts: 11
Joined: Mon Dec 01, 2008 7:00 pm
Location: GULF BREEZE, FL

Post by jerryf » Mon Dec 22, 2008 1:09 am

I finally got my chips, now I have to find a very high power manifyer glass. I originally thought the box was empty. Do you know of any socket That is plug one on the 8 pin chips into.
Thanks Jerry

rmteo
Posts: 237
Joined: Fri Feb 29, 2008 7:02 pm
Location: Colorado, USA

Post by rmteo » Mon Dec 22, 2008 1:29 am

You could use one these - real pricey, about $200 with a DIP adapter:
http://search.digikey.com/scripts/DkSea ... me=A339-ND
Image
Or this (you will still have to solder the chip to it), for about $6:
http://search.digikey.com/scripts/DkSea ... me=A724-ND
Image

jerryf
Posts: 11
Joined: Mon Dec 01, 2008 7:00 pm
Location: GULF BREEZE, FL

Post by jerryf » Mon Dec 22, 2008 1:42 am

Thanks for the info..My eyes are too far gon for the sodering, but I know a guy who could solder it to the adapter and that looks like I could use it.
It looks as though I could us it with a bread board just what I was looking for.
Thanks again

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