Hi I'm trying to use a PIC16F877 to log data taken from the A/D converter. (I will need to store in the region of 24000 16-bit numbers). I already use the EEPROM memory on the chip is there other data memory that I can write the measured data to so that I can read it off at a later point? Or do I have to look for extended memory? If so how is this accessed? thanks Chris -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads