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12/18/98 21:48
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#103 - RE: programming an 28C256 EEPROM
No problem, connect it as a static ram of the same size. Write to it in the same way as to static RAM. Only difference is that write cycle is longer (a few miliseconds perhaps). So you have to make a software delay after each write (5 ms would be OK), or even better make a routine for software polling that checks back written data (I think that bit 7 toggles when write cycle in progress, when done, you get back the same data you have programmed it). To increase programming speed, take care to use block programming mode (write block buffer in the same way as static RAM, then wait programm cycle to end etc.)

For additional data security use software lock feature if possible (that is if this feature supported by used EEPROM). This feature prevents data to be accidentaly modified during power up or power down.

Hope this helps.
If you need additional help, please send me an email.

List of 3 messages in thread
TopicAuthorDate
programming an 28C256 EEPROM            01/01/70 00:00      
RE: programming an 28C256 EEPROM            01/01/70 00:00      
RE: programming an 28C256 EEPROM            01/01/70 00:00      

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