Address of EEPROM ?

jgschmidt · Joined: 03 Dec 2008 Posts: 184 Location: Gresham, OR USA

I was trying to find the EEPROM address for the #ROM directive on the 12F683. I could not find this on the Microchip datasheet and had to browse forum postings for an example.

Does anyone know where I can find this information in the formal docs? Perhaps I've missed it somewhere but careful perusing of the EEPROM section (10.0) only says EEPROM address locations are numbered from 0x00 to 0xff. However for the #ROM directive the first address location is 0x2100., which was verified by actual test.

Thanks.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

This post tells how to find the eeprom address on the Microchip website:
http://www.ccsinfo.com/forum/viewtopic.php?t=35539&start=3

jgschmidt · Joined: 03 Dec 2008 Posts: 184 Location: Gresham, OR USA

Thanks for the quick reply. However, the document referenced in the post does not have a section 5.5 and references the memory locations EXCEPT EEPROM. The document has been updated since that post.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Here's the latest Programming Specification for the 12F683.
http://ww1.microchip.com/downloads/en/DeviceDoc/41204H.pdf

It might not be the exact same section number in every Programming
Specification, but it will be somewhere near end of the document.
In the case of the 12F683, the section is:

jgschmidt · Joined: 03 Dec 2008 Posts: 184 Location: Gresham, OR USA

Thanks! I appreciate you tracking that down. That was well hidden. At least I'll know what to look for when I work with other processors.