For a project we have going we are going to build a simple shield with an I2C F-RAM chip (either FM24CL64B for 8kbyte or FM24CL16B for 2kbyte). We will hopefully have these prototyped in the next couple weeks and do a production run by the end of July. Anybody interested? We're not looking to make a bunch of money on these, just hoping to sell some to help cover the board/assembly costs so they will not be very expensive - the chips go for <$3 so pretty easy to swallow. We could do bigger chips - they go up to 128kbyte but we don't need anything that big for what we are doing - we will probably do the first batch with the 8kbyte chips.
Any interest in a NV-RAM shield using I2C?
Started by 65tux, Jun 28 2012 02:14 PM
5 replies to this topic
#1
Posted 28 June 2012 - 02:14 PM
#2
Posted 28 June 2012 - 04:13 PM
Might be easier and cheaper to use http://wvshare.com/p...-FRAM-Board.htm
#3
Posted 28 June 2012 - 04:33 PM
Might, but really looking for a shield for mounting purposes.
#4
Posted 28 June 2012 - 07:01 PM
Why use FRAM instead of flash?
Other than faster IO?
#5
Posted 29 June 2012 - 12:55 AM
For us it is write cycles that pushed us to FRAM. We need to keep track of a pulse counter across power cycles so that meant constant writes to the flash - up to 50 writes/second so we were worried about the life expectancy of flash with such frequent writes. I forget the number but FRAM was at least a couple of orders of magnitude better.
#6
Posted 07 February 2014 - 04:48 PM
Hey, what's the status of that ram shield? And also, I'm no EE, but.. in theory.. couldn't one use the SD-RAM off of an old PC RAM chip?
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