Help with burning to an SST27SF512
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Re: Help with burning to an SST27SF512
Plus the read back as requested.
Thank you.
zspanners
Thank you.
zspanners
- Attachments
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- read back off sst.bin
- (64 KiB) Downloaded 323 times
Re: Help with burning to an SST27SF512
also your stack is 512kb... it should be 64kb as per holden202t's top screenshot.
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Re: Help with burning to an SST27SF512
Hi Jayme , thank you .
I will have a look at the pins and re-read the bin from the MVRAM.
Then try to re stack from there.
Thank you.
I will have a look at the pins and re-read the bin from the MVRAM.
Then try to re stack from there.
Thank you.
Re: Help with burning to an SST27SF512
nah your read from the nvram is good! its just the burn back to the 27sf512 that is failing due to one unconnected pin. perhaps try a different 27sf512 first?
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Re: Help with burning to an SST27SF512
Hi Jayme , thanks will try that tomorrow morning.
zspanners.
zspanners.
Re: Help with burning to an SST27SF512
If it's a pin, it's pin 15.
Joe.
Joe.
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Re: Help with burning to an SST27SF512
Hi Guys , thanks for the assistance.
Turns out to be a whole batch of faulty SST27SF512 chips WTF.
Now all sorted with an old stock chip that i had squirreled away.
Thank you.
zspanners
Turns out to be a whole batch of faulty SST27SF512 chips WTF.
Now all sorted with an old stock chip that i had squirreled away.
Thank you.
zspanners
Re: Help with burning to an SST27SF512
Wow!zspanners wrote:Hi Guys , thanks for the assistance.
Turns out to be a whole batch of faulty SST27SF512 chips WTF.
Now all sorted with an old stock chip that i had squirreled away.
Thank you.
zspanners
Two thoughts :
- Maybe fake chips.
- Maybe programmer issue.
If you're local, I can check them for you.
Joe.
- Holden202T
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Re: Help with burning to an SST27SF512
yeah were they purchased from ebay ?
I wouldn't think its a programmer issue if the spare one works.
I wouldn't think its a programmer issue if the spare one works.
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Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
Re: Help with burning to an SST27SF512
Yeah, never buy popular chips from SEA, be it via eBay or wherever. So many fakes!!!Holden202T wrote:yeah were they purchased from ebay ?
I wouldn't think its a programmer issue if the spare one works.
Reading at Moates' site, the fakes are OTP, which can't be erased, yet here we have some bits that have failed to program (opposite problem). BTW these chips today (the genuine ones) are made by Greenliant (they are not obsolete).
Too short a programming time, too few programming overburns, incorrect voltages, insufficient current. All these could make a programmer unreliable with some chips. Had similar issues years ago programming M38207E8 microcontrollers.
Joe.