MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 GQ-4X SST49LF002A Device ID problem

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T O P I C    R E V I E W
pentu Posted - 01/04/2010 : 01:02:45
hi,
After installing the SST49LF002A hub, when i click on device ID it gives the following message is it ok,

Device ID (HEX)FFFF
Manufacturer Not in library
Type Unknown Device

If i use firmware hub again, it gives me
Device ID (HEX)2525
Manufacturer TRISTAR
Type Unknown Device

when i give write command it says
write failed, address0x000000 buffer=0x41 device=0x25
I am struck pls help me
thanks
4   L A T E S T    R E P L I E S    (Newest First)
ZLM Posted - 01/06/2010 : 14:04:53
You may need another FWH adapter for testing. Contact the support@mcumall.com for the adapter exchange.
pentu Posted - 01/06/2010 : 01:07:09
Hello ZL,
Thanks for the reply,
i have rechecked with the pin contacts and pin orientation everything seems to be fine, Device ID it shows as 'FFFF, i tried with MX25L8005 (SOIC8) it read beautifully, erased the chip and wrote the bin file in it, verified, but the problem is when i use FWH/LPC, tried with 49lf008, 49lf002,49v002fa all working chip it gives device ID wrong, except 49lf002 it shows as '2525' 'tristar'. it shows reading completed, erase completed, blank check it stops @ 22%, writing fails @ address0x000000 buffer=0x41 device=0x25.

I am novice, ithink iam missing out something,help me out
Thanks
ZLM Posted - 01/05/2010 : 17:47:43
It seems there are bad contacting somewhere in between the adapter, chip and programmer.

Please check the pin contacting again. Also, the chip pin 1 orientation.
pentu Posted - 01/04/2010 : 01:07:56
VCC red light is glowing while reading, VPP led is off, is it normal
thanks

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