At 08:07 AM 5/4/99 +1000, you wrote: >>>> Hello there, I am working on a PIC data logger and I need to store 1 to 2 MB (by 8 bit word) of data in a non volatile memory, I can use several I2C devices, but I wonder if anyone out there have seen any large capacity serial EE proms or serial battery backed up ram chips ? (Access speed is not an issue) Chris Yup. They are called Camera memory Chips and a number of folks manufacture them. Either I2C or SPI interfaces. We build a series of OEM data loggers and have built in an interface, but haven't gotten around to implementing it yet since most of our clients don't need more than a few thousand scans of data. There are also some serial interface PCMCIA cards out, but I am only going on rumor at this point. Would appreciate some feedback when you find/implement a solution. Will have a high speed version implemented in static ram up sometime in the next couple of months for a new client needing 10K scans per second for a few minutes of 24-bit data. Existing systems are on our web page, but the new stuff isn't. All our stuff is available at the board level if something fits. kelly ******************************************************************************** **** All legitimate attachments to this email will be clearly identified in the text. Please note our new address and phone numbers. William K. Borsum, P.E. DASCOR P.O.Box 462885 Escondido, CA 92046-2885 V&M&F) 760-796-7785 Direct) 760-796-7788 <