MCUmall EPROM BIOS Chip Burner Forum
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 Using The Enhanced/Dual power Willem Programmer
 problem with sst39vf020 on a pcb3b board
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2 Posts

Posted - 06/04/2007 :  13:00:11  Show Profile  Reply with Quote
i have a willem pcb3b programmer and i am trying to program a sst39vf020, all i can do is read the eprom correctly.
cant verify , program or erase.

I keep getting incorrect id of chip.
manufacture = 0xD5
device = 0x6E.
i should be getting different id with sanyo in it.
jumpers are correct and tried many software but doesnt seem to work right. we tried on a pcb 4.5 and it gave correct id , can read , write, program , erase, etc..... no problems.
but what could be the problem with the pcb3b not working properly.
Reply #1


2942 Posts

Posted - 06/05/2007 :  07:09:18  Show Profile  Reply with Quote
PCB3B should be able to read/write/ID this chip.

If you can confirm the chip been write correclty, then try to adjust tWP and tWP see it makes difference.

To confirm the chip been write correctly, you need to erase the chip , do a blank check , write and verify. All steps should not have error.

You can use a multimeter to check if there are any voltage out from the ZIF socket from Test H/W tab of software.
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Reply #2


2 Posts

Posted - 06/05/2007 :  21:06:37  Show Profile  Reply with Quote
I need more clarification , guide or tutorial as i am a newbie and didnt understand what i must do. I am new to this scene and i am eager and enjoy this so much but i do need a.b.c. help
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