View Full Version : Issue with new EEPROM

09-02-2011, 11:27 PM
I was setting up an extra Propeller development board for myself today and I found that I have an "EEPROM verify error" on my new setup. On my original board I have a Microchip 24LC256, which works just fine on the new setup. The other EEPROM I have is an Atmel AT24C164. The pin configuration is the same. It appears that there is some kind of compatibility issue, but it's not clear to me what it could be.

In several old forum posts I saw where people have discussed getting an "EEPROM verify error" as a result of their cable. I've switched cables and this does not seem to be the issue. Any ideas?

Phil Pilgrim (PhiPi)
09-03-2011, 01:00 AM
The AT24C164 is only a 2K-byte EEPROM. You need one with at least a 32K-byte capacity.


Loopy Byteloose
09-03-2011, 04:50 PM
You could use something with more than 32K and it would just ignore the extra space; but less than 32K is a no go.

Duane Degn
09-03-2011, 05:02 PM
You can still use the EEPROM for data storage. Just give it a different address than the boot EEPROM.

09-03-2011, 05:15 PM
OK - makes sense. Thanks.