| Electronics > Repair |
| Need Help Programing an 93C46 EEPROM. I Can Read and Erase But Not Write. |
| << < (4/7) > >> |
| DavidAlfa:
What other options are available in the erase button? |
| Chooch_Fiesta:
I thought maybe I had it wrong based off the PCB circuit being too damaged so just for fun I removed ground from the ORG pin so that it would be in X16 configuration and I can still read the chip with both AsProgrammer and NeoProgrammer, but I cannot erase the chip with NeoProgrammer There are no other options under erase other than blank check. I can't tell if I have a hardware or software issue that it is preventing it from writing. I purchased some new 93C46 EEPROMs to see if I am able to write a different one. CH341A is the only programmer I have. |
| DavidAlfa:
Try: https://github.com/McMCCRU/SNANDer |
| Psi:
If you try to write the same value already at the address does it still fail? |
| Psi:
If you unsoldered this from a car alarm there is a possibility this IC is not 100% the same as what you think based on markings that say 93C46. It could be a custom sku of the 93C46, or maybe it has a silicon fault and was sold cheap to specific customers along with documents that provide a work-around. Perhaps there is a mark on the IC to indicate this but only the manufacturer can tell and to anyone else it looks like a date code. i.e, It may appear to be a 93C46 but not actually match the datasheet exactly. Maybe order a new official chip and try that, assuming the car alarm just reads the chip and it sounds like you can read it that should still work fine. |
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