erasing/burning 27sf512 with enhanced willem burner
#1
erasing/burning 27sf512 with enhanced willem burner
I was having trouble erasing my 27sf512 chips after burning them until i stubled accross some false information that led to my discovery of good information.
If i put a blank chip, never been burnt, in the burner and then erased, it worked fine, but if i programmed the chip i was unable to get them to erase. I found a thread on a camaro form to pull the safety jumper and set the eprom to W27C. This didn't work either, so on a hunch i reset the burner and just tried erasing with the jumper out and it worked.
So for those of you using enhanced buners with sst27sf512 chips: burn with safety jumper in, erase with safety jumper out.
If i put a blank chip, never been burnt, in the burner and then erased, it worked fine, but if i programmed the chip i was unable to get them to erase. I found a thread on a camaro form to pull the safety jumper and set the eprom to W27C. This didn't work either, so on a hunch i reset the burner and just tried erasing with the jumper out and it worked.
So for those of you using enhanced buners with sst27sf512 chips: burn with safety jumper in, erase with safety jumper out.
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