Electronics > Repair
NEC uPD6258 serial EEPROM datasheet
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Gyorgy Albert:
Hi forum members,
I am looking desperately for the datasheet of an older 3 wire serial EEPROM made by NEC, uPD6258. It is a SOP8 3 wire device (similar to the Microwire interface) with 8 kbit capacity. Maybe I am lucky, and someone can help with the complete datasheet. It is in a pre-2K generation measurement instrument, and holds the calibration coefficients, which I would like to backup. All what I found are two lines in the 1995 NEC Semiconductor Selection Guide (including the uPD6257, the smaller 4kbit brother).
Thanks in advance,
Gyorgy (George)
coromonadalix:
some references here but programming wise ?
you have to check in many programmers their supported devices list ???
https://www.eevblog.com/forum/beginners/substitute-for-d6254-808e-eeprom/msg248913/#msg248913
attached a Renesas doc with some interfacing
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