ls1 flash chip looking to buy

EPROM EEPROM SRAM NVRAM Flash chips, reading/writing hardware and software
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Antwon
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ls1 flash chip looking to buy

Post by Antwon »

I'm currently playing round with reading/ writing the ls1 pcm flash chip (ab28f400b5) that's the chip number I'm fairly sure correct me if I'm wrong but I'm trying to locate a site to purchase a couple to play with or if another member has some up for sale that be tops.. any info would be great cheers
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antus
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Re: ls1 flash chip looking to buy

Post by antus »

Thats the right chip. You can find some on ebay, but not in bulk, and I cant vouch for quality. I reckon PA28F400BX would work as well and are easier to find, but I have not tested this. (so far, no bricks, few!) :)

Just for the record this is the flash IC in my bench pcm.
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Antwon
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Re: ls1 flash chip looking to buy

Post by Antwon »

Ok awsome. Have u got a copy of the stock file of the chip as yet?. Also i looked on ebay found chips with that part number but they are advertised as AB28F400B5B80 so im not fully sure weather they would work or not ?. I reali wish there was chip clip available for these it would be so much easier than soldering on and off haha
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antus
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Re: ls1 flash chip looking to buy

Post by antus »

Yeah that chip would work. Yes there are a couple of bins in the bin thread under "1999+ LS1"
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Antwon
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Re: ls1 flash chip looking to buy

Post by Antwon »

Sweet as thanks. Ill have a sus and try it out thanks heaps for your input ☺
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Antwon
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Re: ls1 flash chip looking to buy

Post by Antwon »

ok i finaly ordered some chips and took the bin off a working one and wrote it to the new one using a prom burner but it seems to not work i have a felling the offset is totally wrong for the pcm to read it ??.. has anyone else flashed to new chips and know if it needs and offset or not ?

thanks
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Re: ls1 flash chip looking to buy

Post by antus »

no offsets, bin and chip are both 512kbyte. Maybe your bin is bad, but more likely to be a wiring problem.
Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
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Antwon
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Re: ls1 flash chip looking to buy

Post by Antwon »

hmmm thanks for the reply. i may need to try writing it again to double check it. i only bench tested it with hp tuners but it wouldnt connect to it. could have been a pin not fully soldered but will try again i gess.

thanks antus always great help thumbs up
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Re: ls1 flash chip looking to buy

Post by vn5000 »

Did you byte swap the bin file , if not you need to unless the file your writing was read straight off eeprom
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Antwon
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Re: ls1 flash chip looking to buy

Post by Antwon »

hey, yer i read it straight off the other eeprom saved it and wrote it back on to new one i didnt open and save it with any tuning software
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