HCS08 Serial Number or ID

Gentle Denizens:

Does Freescale's HCS08 series have a vaguely unique serial number that
one can programmatically gain access to?  I am working out part of a
networking protocol, and a canned ID would do me wonders.

I remember that Temic's 8051 derivatives had a serial number that you
could get at.  Of course, they piled on the disclaimers about not
relying on its uniqueness, etc., and that would be fine for my
application.

Thanks in advance,
-Mike

On 20 Feb 2006 12:56:58 -0800 in comp.arch.embedded,
mcoyle@midmark.com wrote:

>Gentle Denizens:
>
>Does Freescale's HCS08 series have a vaguely unique serial number that
>one can programmatically gain access to?  I am working out part of a
>networking protocol, and a canned ID would do me wonders.

Not that I'm aware of.

>
>I remember that Temic's 8051 derivatives had a serial number that you
>could get at.  Of course, they piled on the disclaimers about not
>relying on its uniqueness, etc., and that would be fine for my
>application.

If it doesn't have to be unique, how about 0?  Or if that doesn't
work, how about 1?

All kidding aside, the most common solution to this problem is to set
aside a byte or two or four in Flash, and serialize each chip as you
program it.  Most programming software I've used supports this, as do
chip programming services.

If you need a more robust serial number, Dallas used to sell serial
number ROM chips with a (wait for it) serial interface.  ISTR 64 and
1024 bit parts, and some with additional features, like some EEPROM.

HTH,

  -=Dave
                                        -=Dave

-- 
Change is inevitable, progress is not.

> ...All kidding aside, the most common solution to this problem is to set
> aside a byte or two or four in Flash, and serialize each chip as you
> program it.  Most programming software I've used supports this, as do
> chip programming services...


Thanks, Dave.  I'd thought about that approach -- we are going to use
flash parts, and our programmer does serialization just fine.  I was
just hoping to get a freebie.


> Change is inevitable, progress is not.

BTW -- I like your tagline.


Audentes Fortuna Juvat,
-Mike