MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X, GQ-3X, GQ-4X)
 MT28F800B5B
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autotronic

15 Posts

Posted - 12/26/2014 :  23:54:10  Show Profile  Reply with Quote
I have sop44 flashs MT28F800B5B and gq3x.
Can anbody help, because programmer erase anr read
ok this chip only write the chip is a problem.
Please don`t advice me "check contacts" because
I work with programers more then 10 years.
I am sure problem is in software, because some blocks was writen
OK.
Reply #1

ZLM

2923 Posts

Posted - 12/27/2014 :  19:18:42  Show Profile  Reply with Quote
MT28F800B5B on GQ-3X needs to connect A19 address pin. GQ-4X does not

Only GQ-4X does not need any extra connection.
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Reply #2

autotronic

15 Posts

Posted - 12/28/2014 :  02:30:28  Show Profile  Reply with Quote
OK thank it works now.
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