On Monday 13 January 2003 21:18, somebody wrote > I am looking for a serial (preferably SPI) plain RAM in an SO8 > package. Preferably 8 bit wide by 16k or 32k. Anyone know of such a > chip and where I can get it? Digi-key does not have anything like > it. > > I am using an SPI serial EEPROM (AT25128) attached to a 18F252 to add > memory to store a large sting table. It does not need to be > persistent but I was unable to find any serial plain RAM. Does it > exist? If not, is there a reason? My problem is that at 100K write > cycles, it will ware out too soon in my application. The slower > writes is acceptable. > > I am considering switching to a parallel RAM, but I would rather not > give up the board space switching an SO8 for an SO32 which would also > require switching to the larger 40 pin 18F454 to get more I/O. On > the subject of parallel, does anyone make a 8 bit wide parallel RAM > that multiplexes address and data on just 8 pins?
I would check out Xicor's offerings. They have several designs with unusual pin arrangements (e.g. ram/eeprom on a single chip with one line controlling memory type). Ditto Dallas Semiconductor, who have some original or strange ideas. Another line of attack is to check the ram databooks for 8 pin packages. -- Regards, Declan Moriarty. -- Author: Declan Moriarty INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
