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CDCE72010: Writing EEPROM Problem

Part Number: CDCE72010


We are trying to write our setting into the EEPROM on CDCE72010 but it doesn't seem work.

I check the registe11, pin26 is 1. Does it mean that EEPROM is locked and can't be no longer changed?

If yes, is there any chance to reset the EEPROM?



  • Hi Yun,

    Yes if R11[26] reads back a '1' then EEPROM is permanently locked. It cannot be reset. You need to get a new chip for evaluation. Make sure to write to the EEPROM with the unlock method if you don't want it to be permanently locked.