diy NVRAM

EPROM EEPROM SRAM NVRAM Flash chips, reading/writing hardware and software
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The1
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Re: diy NVRAM

Post by The1 »

thanks Festy, good comments!

Previously ive only heard that either No Bin Logo or 100ns part (70ns is all that is sold according to datasheets) indicate a fake. Your comments defiantly make sense! That was one thing i thought once i saw the CR battery, dont know how that's ment to last 10yrs!! :o

EDIT: the one in the photo i bought 6 months ago, it lasted only 6months obviously, the battery is flat only reads about 200mv. It would write then verify then after a few seconds would be corrupt again.
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festy
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Re: diy NVRAM

Post by festy »

Other signs are that the cover shouldn't just pop off, and I don't think the dimple above pin 1 should be there.
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The1
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Re: diy NVRAM

Post by The1 »

well im looking forward to yours fest! Maybe the only reliable ones!

a search on ebay for DS1245Y indicates 100% fake atm. Looking elsewhere to find some atm.
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VL400
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Re: diy NVRAM

Post by VL400 »

The ones I supply with boards are genuine, industrial rated and 70nS (there are other genuine speeds too) but sadly they come at a cost and have to buy them in quantity :cry: The DSfesty should be cheaper :thumbup:
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festy
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Re: diy NVRAM

Post by festy »

Another way to spot fakes - the dodgy serial number ;)
http://www.ebay.com.au/itm/1PCS-DS1245Y ... 4aaea2bc1d
date code 1010, but same serial as The1's.
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The1
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Re: diy NVRAM

Post by The1 »

and in that ones case it's $8 lol
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The1
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Re: diy NVRAM

Post by The1 »

just for the record i got an email back from maxim and there official disty to the public is mouser.
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festy
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Re: diy NVRAM

Post by festy »

festy wrote:I should have a couple of modules ready for testing in a few weeks for the 808 and vs+ ecus, just waiting for the pcbs and parts to arive now.
Bit of a delay with some parts being out of stock.
I'll have a couple ready for testing in 3 weeks, more if the back ordered parts turn up by then.
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festy
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Re: diy NVRAM

Post by festy »

The boards arrived today - just need to pick up some shorter pcb pins because the machine pins I was going to use make it too tall to fit in the 808's case without mods. My 'test bench' ecu is running off this module now.
nvram.jpg
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nvram2.jpg
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kojab
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Re: diy NVRAM

Post by kojab »

That looks good. Any idea of cost yet?
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