Philips offers the PCF8553 clock/calendar with 240*8bit ram and the PCF8593 low power version with 8byte ram. Try http://www-us.semiconductors.philips.com/ Leo ---------- > From: MILTON MEDICINTEKNIK KB > To: PICLIST@MITVMA.MIT.EDU > Subject: SV: (OT) Timekeeper (R) RAM alternative ? > Date: Thursday, May 13, 1999 6:08 PM > > I use the Timekeeper (R) RAM in a PIC project (so this is just a little off topic - OK ?) The advantage is a classic, useful scratchpad, with a 10 year clock on top (year month ....) both are very valuable for this project. The disadvantage is, that the 32 K memory needs 15 addresslines, and thus a hairy PCB. Either I need to use latches or drivers (or use up the I/O ports of the PIC) to address this special RAM. > > Now - have anyone of you seen a serially (SPI ??) addressable RAM / timer combination out there ? > > Best Regards > > Sven