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Groups > comp.arch.embedded > #27061
| From | John Speth <johnspeth@yahoo.com> |
|---|---|
| Newsgroups | comp.arch.embedded |
| Subject | Re: Datakey silicon inside |
| Date | 2017-07-19 17:34 -0700 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <okotr2$199d$1@gioia.aioe.org> (permalink) |
| References | <okoqca$150q$1@gioia.aioe.org> <61svmcldrleo594332u3n9i5d30in5r3co@4ax.com> |
On 7/19/2017 4:51 PM, Robert Wessel wrote: > On Wed, 19 Jul 2017 16:35:40 -0700, John Speth <johnspeth@yahoo.com> > wrote: > >> Hi folks- >> >> Does anybody know what memory devices are embedded in the Datakey memory >> tokens? >> >> For example, this part: >> >> http://datakey.com/downloads/SST_Series_DS_REVD.pdf >> >> which is from datakey.com. >> >> I'm pretty sure these devices are just embedded serial EEPROMs but >> Datakey doesn't reveal the part inside. > > > They say it's an SPI EEPROM, and the interface exposes the usual set > of signals. Why wouldn't you believe them? I mean it's possible they > have some sort of SPI interface device and some other sort of ROM > behind that, but if they do, it'll still look like an SPI EEPROM to > you. I want to replicate the token in a new circuit design that embeds a token within. I need to know the exact EEPROM part number so I don't have to embed the whole datakey token. My plan has size and cost advantages. You could be right about extra chips inside but the data sheets don't give any hints about any additional chips. The interface specs are suspiciously similar to the famous 25LC320A EEPROM but there are enough differences that excludes the 25LC320A. John
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Datakey silicon inside John Speth <johnspeth@yahoo.com> - 2017-07-19 16:35 -0700
Re: Datakey silicon inside Robert Wessel <robertwessel2@yahoo.com> - 2017-07-19 18:51 -0500
Re: Datakey silicon inside John Speth <johnspeth@yahoo.com> - 2017-07-19 17:34 -0700
Re: Datakey silicon inside Tim Wescott <seemywebsite@myfooter.really> - 2017-07-22 16:28 -0500
Re: Datakey silicon inside John Speth <johnspeth@yahoo.com> - 2017-07-24 09:37 -0700
Re: Datakey silicon inside Theo Markettos <theom+news@chiark.greenend.org.uk> - 2017-07-23 23:30 +0100
Re: Datakey silicon inside John Speth <johnspeth@yahoo.com> - 2017-07-25 13:32 -0700
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