MCU with unique read-only ID?
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MCU with unique read-only ID?
by Funny N.
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Is there such a MCU product exist on the market, which has a unique read-only ID on each chip? Most of today's Flash based MCU can be assigned/programed with a unique ID, but this ID can be erased at chip erase, it can also be copied.
Currently we only found there are some standalone read-only "ID chip" available from different vendors, I just want to make sure if there are some MCU get this kind of ID feature. P.s. We have double check with Microchip MCUs, and confirmed none of the PIC got this feature yet. I am curious if other brand of MCU has this feature? E.g. a 12F508 equipped with such an ID can be identified from any other 12F508s even though they are made on the same day, same lot, even same die. Funny N. Au Group Electronics, http://www.AuElectronics.com http://www.AuElectronics.com/products http://augroups.blogspot.com/ -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Re: MCU with unique read-only ID?
by Vitaliy-14
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Funny NYPD wrote:
> Is there such a MCU product exist on the market, which has a unique > read-only ID on each chip? Most of today's Flash based MCU can be > assigned/programed with a unique ID, but this ID can be erased at chip > erase, it can also be copied. > > Currently we only found there are some standalone read-only "ID chip" > available from different vendors, I just want to make sure if there are > some MCU get this kind of ID feature. > > P.s. We have double check with Microchip MCUs, and confirmed none of the > PIC got this feature yet. I am curious if other brand of MCU has this > feature? E.g. a 12F508 equipped with such an ID can be identified from any > other 12F508s even though they are made on the same day, same lot, even > same die. > Why do you need this functionality? Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Re: MCU with unique read-only ID?
by Funny N.
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The unique read-only ID can be used for many functions. For instance, it can be used to identify each MCU, each individual products, etc.
Funny N. Au Group Electronics, http://www.AuElectronics.com http://www.AuElectronics.com/products http://augroups.blogspot.com/ ________________________________ From: Vitaliy <piclist@...> To: Microcontroller discussion list - Public. <piclist@...> Sent: Monday, September 28, 2009 10:09:58 PM Subject: Re: [EE]MCU with unique read-only ID? Funny NYPD wrote: > Is there such a MCU product exist on the market, which has a unique > read-only ID on each chip? Most of today's Flash based MCU can be > assigned/programed with a unique ID, but this ID can be erased at chip > erase, it can also be copied. > > Currently we only found there are some standalone read-only "ID chip" > available from different vendors, I just want to make sure if there are > some MCU get this kind of ID feature. > > P.s. We have double check with Microchip MCUs, and confirmed none of the > PIC got this feature yet. I am curious if other brand of MCU has this > feature? E.g. a 12F508 equipped with such an ID can be identified from any > other 12F508s even though they are made on the same day, same lot, even > same die. > Why do you need this functionality? Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Re: MCU with unique read-only ID?
by Tamas Rudnai
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My memory fade off a bit but is not Microchip had some sort of
pre-programming service with serial numbers? As far as I remember it was tight with OTP chips, so that you cannot modify the content afterwards. Tamas On Tue, Sep 29, 2009 at 12:40 PM, Funny NYPD <funnynypd@...> wrote: > The unique read-only ID can be used for many functions. For instance, it > can be used to identify each MCU, each individual products, etc. > > Funny N. > Au Group Electronics, http://www.AuElectronics.com > http://www.AuElectronics.com/products > http://augroups.blogspot.com/ > > > > > ________________________________ > From: Vitaliy <piclist@...> > To: Microcontroller discussion list - Public. <piclist@...> > Sent: Monday, September 28, 2009 10:09:58 PM > Subject: Re: [EE]MCU with unique read-only ID? > > Funny NYPD wrote: > > Is there such a MCU product exist on the market, which has a unique > > read-only ID on each chip? Most of today's Flash based MCU can be > > assigned/programed with a unique ID, but this ID can be erased at chip > > erase, it can also be copied. > > > > Currently we only found there are some standalone read-only "ID chip" > > available from different vendors, I just want to make sure if there are > > some MCU get this kind of ID feature. > > > > P.s. We have double check with Microchip MCUs, and confirmed none of the > > PIC got this feature yet. I am curious if other brand of MCU has this > > feature? E.g. a 12F508 equipped with such an ID can be identified from > any > > other 12F508s even though they are made on the same day, same lot, even > > same die. > > > > Why do you need this functionality? > > Vitaliy > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.mcuhobby.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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RE: MCU with unique read-only ID?
by Listas de Correo-2
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The closest thing I can think of, not being a MCU Id though, it's a memory
with a unique ID. You can buy from Microchip the EEPROMs with MAC ADDRESS (www.microchip.com/mac) with volume pricing as low as $0.21. Additionally, and thinking outside the box, if you need to validate an MCU ID you can do something like saving an ID on the FLASH and also saving a hash, generated using the program memory and ID, so if that number is modified by someone else, the hash and serials would not verify. You should think how to get these numbers without giving user access to them, so no one can copy all the numbers to another MCU... Regards Mauricio Jancic > -----Original Message----- > From: piclist-bounces@... [mailto:piclist-bounces@...] On > Behalf Of Funny NYPD > Sent: Tuesday, September 29, 2009 08:40 > To: Microcontroller discussion list - Public. > Subject: Re: [EE]MCU with unique read-only ID? > > The unique read-only ID can be used for many functions. For instance, > it can be used to identify each MCU, each individual products, etc. > > Funny N. > Au Group Electronics, http://www.AuElectronics.com > http://www.AuElectronics.com/products > http://augroups.blogspot.com/ > > > > > ________________________________ > From: Vitaliy <piclist@...> > To: Microcontroller discussion list - Public. <piclist@...> > Sent: Monday, September 28, 2009 10:09:58 PM > Subject: Re: [EE]MCU with unique read-only ID? > > Funny NYPD wrote: > > Is there such a MCU product exist on the market, which has a unique > > read-only ID on each chip? Most of today's Flash based MCU can be > > assigned/programed with a unique ID, but this ID can be erased at > chip > > erase, it can also be copied. > > > > Currently we only found there are some standalone read-only "ID chip" > > available from different vendors, I just want to make sure if there > are > > some MCU get this kind of ID feature. > > > > P.s. We have double check with Microchip MCUs, and confirmed none of > the > > PIC got this feature yet. I am curious if other brand of MCU has this > > feature? E.g. a 12F508 equipped with such an ID can be identified > from any > > other 12F508s even though they are made on the same day, same lot, > even > > same die. > > > > Why do you need this functionality? > > Vitaliy > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Re: MCU with unique read-only ID?
by Olin Lathrop
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Funny NYPD wrote:
> The unique read-only ID can be used for many functions. For instance, > it can be used to identify each MCU, each individual products, etc. Yes, but programming in your own unique ID address those problems too. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Re: MCU with unique read-only ID?
by Brendan Gillatt
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1 Funny NYPD wrote: > Is there such a MCU product exist on the market, which has a unique read-only ID on each chip? ST's STM32F103 range of Cortex M3 MCUs have a 128 bit ID factory programmed into them. - -- Brendan Gillatt | GPG Key: 0xBF6A0D94 brendan {a} brendangillatt (dot) co (dot) uk http://www.brendangillatt.co.uk -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (MingW32) iD8DBQFKwh8gHEhZ5Ws5poERAuUjAJ0fNIAfF9wIAljvv+sE0qJ2VwHyzACfU96J sxwyGSaJj0Z7Xxuur7m6I9w= =rGLf -----END PGP SIGNATURE----- -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Re: MCU with unique read-only ID?
by Tamas Rudnai
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Just found this doc accidentally on SQTP programming:
http://ww1.microchip.com/downloads/en/AppNotes/91023b.pdf That's what I was remembering of, and not sure that they still doing that, but basically you could provide an ascii file with the serial numbers or you can ask a random serial numbering if i understood it well... (actually, about the random numbers I read it here: http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2617¶m=en533117) Tamas On Wed, Sep 30, 2009 at 11:17 AM, Funny NYPD <funnynypd@...> wrote: > Thanks guys for all the answers. > Where can I find a detail datasheet for STM32F103 specially on the unique > ID part? > This seems to be a standard feature for all STM32Fxxx family. > I did a quick search on ST web site and found nothing in detail on the > documents about this feature. > > Funny N. > Au Group Electronics, http://www.AuElectronics.com > http://www.AuElectronics.com/products > http://augroups.blogspot.com/ > > > > > ________________________________ > From: Funny NYPD <funnynypd@...> > To: Microcontroller discussion list - Public. <piclist@...> > Sent: Tuesday, September 29, 2009 7:40:19 AM > Subject: Re: [EE]MCU with unique read-only ID? > > > The unique read-only ID can be used for many functions. For instance, it > can be used to identify each MCU, each individual products, etc. > > Funny N. > Au Group Electronics, http://www.AuElectronics.com > http://www.AuElectronics.com/products > http://augroups.blogspot.com/ > > > > > ________________________________ > From: Vitaliy <piclist@...> > To: Microcontroller discussion list - Public. <piclist@...> > Sent: Monday, September 28, 2009 10:09:58 PM > Subject: Re: [EE]MCU with unique read-only ID? > > Funny NYPD wrote: > > Is there such a MCU product exist on the market, which has a unique > > read-only ID on each chip? Most of today's Flash based MCU can be > > assigned/programed with a unique ID, but this ID can be erased at chip > > erase, it can also be copied. > > > > Currently we only found there are some standalone read-only "ID chip" > > available from different vendors, I just want to make sure if there are > > some MCU get this kind of ID feature. > > > > P.s. We have double check with Microchip MCUs, and confirmed none of the > > PIC got this feature yet. I am curious if other brand of MCU has this > > feature? E.g. a 12F508 equipped with such an ID can be identified from > any > > other 12F508s even though they are made on the same day, same lot, even > > same die. > > > > Why do you need this functionality? > > Vitaliy > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.mcuhobby.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Cheap and easy way to read unisolated thermocouple
by Tony Vandiver-2
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I always have a tough time with reading thermocouples with a micro. In
the past, I have used much to expensive chips like the AD595 which works o.k. if you make the system configurable in terms of whether the negative input is tied to frame ground or not (this is my biggest problem with thermocouples - the signal being swamped by ground currents that I think are running through the frame of the equipment the probe is mounted to). I've tried designing with the Cypress PSOC devices using their thermocouple references, and ended up with way too much noise that had to be filtered. Is there a down and dirty way to measure thermocouples reliably even when they are not isolated? Thanks, Tony -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Re: Cheap and easy way to read unisolated thermocouple
by Dwayne Reid
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At 04:55 PM 9/30/2009, Tony Vandiver wrote:
>Is there a down and dirty way to measure thermocouples reliably even >when they are not isolated? Not really. Nowadays, I pretty much insist on isolated thermocouples. They can be priced reasonably if you work with the manufacturer and you are buying in at least hundred lot quantities. One approach I tried in years gone by was to use an isolated dc-dc convertor and an opto-isolator: the thermocouple reading was digitized, then sent over the opto-isolator. It worked but its not cheap. Figure on at least 10 bucks extra cost per isolated channel. dwayne -- Dwayne Reid <dwayner@...> Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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Re: MCU with unique read-only ID?
by Vitaliy-14
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Olin Lathrop wrote:
>> The unique read-only ID can be used for many functions. For instance, >> it can be used to identify each MCU, each individual products, etc. > > Yes, but programming in your own unique ID address those problems too. Exactly. Each of our scan tools are programmed with a unique ID during production. Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist |
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