40-pin controller IC identity?

[SparkyGuy]

Haven't been able to identify this controller. Don't need replacement; it's
got custom code, I'm sure. Would be nice to have pin IDs.

<http://img6.picsplace.to/img.php?file=img6/27/CliffordPCB.jpg>

It's from an old Clifford Intelliguard 200 car security system, vintage early
90's.

Anybody happen to have external wiring diagram or schematic for the PCB?

Thanks.

 

[Frank Raffaeli]

Haven't been able to identify this controller. Don't need replacement; it's
got custom code, I'm sure. Would be nice to have pin IDs.

<http://img6.picsplace.to/img.php?file=img6/27/CliffordPCB.jpg>

It's from an old Clifford Intelliguard 200 car security system, vintage early
90's.

Anybody happen to have external wiring diagram or schematic for the PCB?

Thanks.

It's a wild guess, but that's an old National Semi logo. I'd check the
COP8 family, because it's low cost, e.g. COP888CG (comes in a 40 DIP).

Frank

 

[Meat Plow]

It's a wild guess, but that's an old National Semi logo. I'd check the
COP8 family, because it's low cost, e.g. COP888CG (comes in a 40 DIP).

Frank

National MM9224.

 

[Lionel]

Haven't been able to identify this controller. Don't need replacement; it's
got custom code, I'm sure. Would be nice to have pin IDs.

<http://img6.picsplace.to/img.php?file=img6/27/CliffordPCB.jpg>

Looks like a custom mask-programmed micro. It's a Nat-Semi of some
variety, but I'm not familiar enough with their range of
microcontrollers to make an intelligent suggestion as to which one. If
you can find the right 'family' on their website, you should at least
then be able to identify clocks, power & I/O pins, if that's any help
to you. You might also try contacting a support person there & see if
they have any ideas:
<http://www.national.com/>

 

[Lionel]

National MM9224.

Nice work, Meat. Made obsolete in '97, apparently:
<http://www.national.com/obs/>

Obsolete Part Alternate Part or Supplier Source Last Time Buy
Date Distributor
1. MM9224-VUL
NONE
NONE
12/31/97
N/A

 

[[email protected]]

Almost certainly not. 9224 is the date code.

 

[Spehro Pefhany]

Looks like a custom mask-programmed micro. It's a Nat-Semi of some
variety, but I'm not familiar enough with their range of
microcontrollers to make an intelligent suggestion as to which one. If
you can find the right 'family' on their website, you should at least
then be able to identify clocks, power & I/O pins, if that's any help
to you. You might also try contacting a support person there & see if
they have any ideas:
<http://www.national.com/>

I'd guess it to be a COP8 8-bit CMOS microcontroller (mask
programmed). Clock should be on pins 6 and 7, which it looks to be
(axial-lead ceramic caps, 1/8W bias resistor and 2-pin resonator in
the photo). You should see a clock on pin 6.

/Reset should be on pin 34 (but it looks to be tied to another pin).

Vcc should be on 8 and GND should be on 33.

Eg. COP688CL/COP988CL

Best regards,
Spehro Pefhany

 

[Ryan Weihl]

Looks like a custom mask-programmed micro. It's a Nat-Semi of some
variety, but I'm not familiar enough with their range of
microcontrollers to make an intelligent suggestion as to which one. If
you can find the right 'family' on their website, you should at least
then be able to identify clocks, power & I/O pins, if that's any help
to you. You might also try contacting a support person there & see if
they have any ideas:
<http://www.national.com/>

or could this be a SC\MP version of NatSemi. discontinued
see heavier traces on 20 and 40
rw

--

 

[krw]

or could this be a SC\MP version of NatSemi. discontinued
see heavier traces on 20 and 40

I thought about SC/MP, but '92 sounded a bit late. The SC/MP was out
in the late '70s. I wouldn't have thought it survived that long.

 

[Franc Zabkar]

Almost certainly not. 9224 is the date code.

AFAICT, the date code of Q15 is 9920 and for the relays it is 9807.
Would it make sense for a manufacturer to use old mask ROMmed stock in
a new design?

- Franc Zabkar

 

[Franc Zabkar]

Haven't been able to identify this controller. Don't need replacement; it's
got custom code, I'm sure. Would be nice to have pin IDs.

Identify the other ICs and work backwards.

<http://img6.picsplace.to/img.php?file=img6/27/CliffordPCB.jpg>

It's from an old Clifford Intelliguard 200 car security system, vintage early
90's.

AFAICT, the date codes for Q15 and for the relays suggest that it was
built as late as 9920. Is this confirmed by the date codes on the
other chips?

Anybody happen to have external wiring diagram or schematic for the PCB?

Thanks.

- Franc Zabkar

 

[Franc Zabkar]

I'd guess it to be a COP8 8-bit CMOS microcontroller (mask
programmed). Clock should be on pins 6 and 7, which it looks to be
(axial-lead ceramic caps, 1/8W bias resistor and 2-pin resonator in
the photo). You should see a clock on pin 6.

/Reset should be on pin 34 (but it looks to be tied to another pin).

Vcc should be on 8 and GND should be on 33.

Eg. COP688CL/COP988CL

Best regards,
Spehro Pefhany

A search of Google Groups suggests that the 16-pin chip may be a
ULN2003 which would confirm that the uP has 8-bit IO ports. Tracing
the ULN2003's inputs back to the uP would identify the uP's IO pins.

- Franc Zabkar

 

[Meat Plow]

Nice work, Meat. Made obsolete in '97, apparently:
<http://www.national.com/obs/>

My Google skillz Rock!

 

[Meat Plow]

Almost certainly not. 9224 is the date code.

Be quiet, you've ruined my moment of stardom!.

 

[Michael Black]

AFAICT, the date code of Q15 is 9920 and for the relays it is 9807.
Would it make sense for a manufacturer to use old mask ROMmed stock in
a new design?

Something that's mask programmed, you don't want to buy in small quantities.
Hence so long as the design is still viable, you don't want to change
things until you absolutely have to (such as running out of that mask
programmed device, or something else is just no longer available).

Michael

 

[[email protected]]

AFAICT, the date code of Q15 is 9920 and for the relays it is 9807.
Would it make sense for a manufacturer to use old mask ROMmed stock in
a new design?

Yes. Where I work, we have "masked" [actually they are OTP, but they
are factory-programmed and sold as "masked"] COP micros dating back at
least five years. We'll still be making those products five or six
years from now, and those chips were last time buy two years ago. Less
expense and trouble to do a last time buy for the product's expected
lifespan than to port everything to a new micro.

 

[Lionel]

or could this be a SC\MP version of NatSemi. discontinued
see heavier traces on 20 and 40

Were they still making the SC/MP in '92? The last time I saw an SC/MP
was in 1980!

 

[CJT]

Haven't been able to identify this controller. Don't need replacement; it's
got custom code, I'm sure. Would be nice to have pin IDs.

<http://img6.picsplace.to/img.php?file=img6/27/CliffordPCB.jpg>

It's from an old Clifford Intelliguard 200 car security system, vintage early
90's.

Anybody happen to have external wiring diagram or schematic for the PCB?

Thanks.

You'll have to wait until 2008 when the picture becomes available.

 

[SparkyGuy]

Identify the other ICs and work backwards.

The 8-pin says "3-544" and is probably a 73-544 clock gen. The resonator is
right there between it and the 40 pin'r.

AFAICT, the date codes for Q15 and for the relays suggest that it was
built as late as 9920. Is this confirmed by the date codes on the
other chips?

I've owned since about mid '98. The relays were replaced maybe ~'99. Don't
think the transistor was replaced, but might be.

 

[Franc Zabkar]

The 8-pin says "3-544" and is probably a 73-544 clock gen. The resonator is
right there between it and the 40 pin'r.

Could it be a house-numbered serial EEPROM, eg 93Cxx ???

According to the datasheet for the COP8 ...

port pin# function
----------------------------------------------
G4 3 SO (MICROWIRE Serial Data Output)
G5 4 SK (MICROWIRE Serial Clock)
G6 5 SI (MICROWIRE Serial Data Input)

I think the DIP-14 and DIP-16 IO chips should give you a clue as to
the uC's port layout. I'm betting that one chip drives various
external relays while the other accepts inputs from sensors.

- Franc Zabkar