MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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 Using The Enhanced/Dual power Willem Programmer
 Dual Power Willem EPROM timeout error
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Posted - 09/05/2006 :  09:39:33  Show Profile  Reply with Quote
Hey guys, this is my first post. When I try to erase AT29C256 chips, I get a time out error. It will confirm h/w, chip ID, read & verify, & program ok, but not erase.

Any ideas?

Reply #1


2942 Posts

Posted - 09/05/2006 :  10:37:32  Show Profile  Reply with Quote
AT29C256 does not need a erase. It will be overwiten by new data.
If you need a blank chip, fill the buffer by FF and write it to chip.
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Reply #2


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Posted - 09/05/2006 :  11:04:23  Show Profile  Reply with Quote
Aahhh, i did'nt know that about those chips. But is there still a problem with my settings that allow it to time out?

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