Re: NVRAM Dallas Semiconductor makes some static RAMs with an internal battery.  One of them is the DA1230AB/Y, a 256kbit (32Kbyte) battery backed static RAM.    http://www.dalsemi.com/DocControl/index.html  - - - Nick - - - "PROMATEC Proj. e Man. em Eletr. e Inst." wrote: >  > Hi! >  > Here is Cesar Mello, from Brazil. I'd like to know if there is any NVRAM > version of the 62256 chip, or any other solution smaller than the external > batteries, or if it's possible to keep Interactive C and the user program > loaded in an EPROM.