Electronics > Repair
Need Help Programing an 93C46 EEPROM. I Can Read and Erase But Not Write.
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Chooch_Fiesta:
My latest test. I forgot that the socket is 3.3V VCC. I added a jumper to the VCC line to the 5V header.

I am now able to get it to pass the write stage but it doesn't actually write. The chip is still black after verify stage is run.

DavidAlfa:
Check under programming if Protect OFF is set.
Chooch_Fiesta:
There is a Lock button but it is not clickable with or without the EEPROM plugged in.

Only options when programming are  Erase, blank check, write, verify.

DavidAlfa:
Then try the lock button. Cannot remember where, but there's a lock/unlock option somewhere.
Chooch_Fiesta:
Like I said previously it is there but not clickable. It does nothing.

There are no other write protection options.
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