Thomas A. Coonan wrote: > There's EEPROM. Serial EEPROM is particularly handy. > Your 10KB might best be done with this. Check out > XICOR, SGS Thompson, Atmel, also Dallas, there are > others. And, of course, Microchip. In fact, I remember > several App notes on interfacing PICs to Microchip > EEPROMs. 2-4 wire serial interface is pin-efficient for > the PIC. Good for data applications, where you don't > require high speed, or program execution. No battery - > just a little chip (as small as 8-pin). Your'e right, normal serial EEPROM's have a rather long write cycle (approx 10ms). However if you need faster writing cycles, then you might want to consider FRAMs instead of serial EEPROM's. They are pin and software compatible with the normal 8 pin serial EEPROM's, but with the added advantage of ZERO WRITE CYCLE delay. You can write data to them as fast as your micro can handle it. Just my small contribitution. I once ran into writing speed problems with normal EEPROM and FRAM's solved the problem. Rgds Werner -- Werner Terreblanche http://www.aztec.co.za/users/werner wterreb@plessey.co.za (work) OR werner@aztec.co.za (home) Plessey SA, PO Box 30451,Tokai 7966, Cape Town, South Africa or at home : Suite 251, PostNet X5061, Stellenbosch, 7599 Tel +27 21 7102251 Fax +27 21 7102886 Home +27 21 8872196 ------------------------------------------------------------ -- Werner Terreblanche http://www.aztec.co.za/users/werner wterreb@plessey.co.za (work) OR werner@aztec.co.za (home) Plessey SA, PO Box 30451,Tokai 7966, Cape Town, South Africa or at home : Suite 251, PostNet X5061, Stellenbosch, 7599 Tel +27 21 7102251 Fax +27 21 7102886 Home +27 21 8872196 ------------------------------------------------------------