Andrej Novak

MC9S12HZ256 EEPROM writing problem

Discussion created by Andrej Novak on Jun 20, 2007
Latest reply on Jun 21, 2007 by Andrej Novak
Hello,

maybe, someone could help, I'm experiencing a problem with storing any data to EEPROM of HZ256 using same algorithm, as I use for e.g. DT256 (and working well).

I tried to burn some pattern into EEPROM and result is, whole EEPROM array is $00. Erase seems to work well, after that I can read $FF.

My HZ256 is member of 3L16Y maskset (QAD0620) and existing errata doesn't describe such a problem.

I'll keep on to find the reason, maybe I omitted some important difference in programming algo.

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