Author Topic: something cool i found in an old car alarm  (Read 3989 times)

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Offline Nickk2057

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something cool i found in an old car alarm
« on: April 08, 2013, 09:57:02 am »
ok.. i found an old car alarm that was pulled from a junk vehical that has a PIC16C73B-04/SP 033033C chip in it....

 which i found to be useful in most applications as i noted in the blogs on other websites... but i still can't find the scematic for it :( so that way i can program it to use in other stuff.. and hope it works for to program it with the arduino programing (if it works)
just keep believing in yourself.. you can do some remarkable things in your life when you break through the ice and make things happen with the stuff you make
 

Offline David_AVD

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Re: something cool i found in an old car alarm
« Reply #1 on: April 08, 2013, 09:59:21 am »
I'm pretty sure that particular chip is OTP (One Time Programmable).
 

Offline Nickk2057

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Re: something cool i found in an old car alarm
« Reply #2 on: April 08, 2013, 10:04:06 am »
I'm not sure about that... it might be useful if i can be able to program it anyways... but that won't stop me from trying anyways ;)
just keep believing in yourself.. you can do some remarkable things in your life when you break through the ice and make things happen with the stuff you make
 

Offline Nickk2057

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Re: something cool i found in an old car alarm
« Reply #3 on: April 08, 2013, 10:10:25 am »
by the way here is the scematic for it too... http://ww1.microchip.com/downloads/en/DeviceDoc/30605D.pdf
just keep believing in yourself.. you can do some remarkable things in your life when you break through the ice and make things happen with the stuff you make
 

Offline David_AVD

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Re: something cool i found in an old car alarm
« Reply #4 on: April 08, 2013, 10:43:04 am »
It is indeed OTP.  From the data sheet:

Quote
A UV erasable CERDIP packaged version is ideal for code development, while the cost effective One-Time-Programmable (OTP) version is suitable for production in any volume.

Unless it's the windowed package (UV erasable), there's no real chance of reprogramming that chip.  Feel free to have a go of course.   :)
« Last Edit: April 08, 2013, 10:48:49 am by David_AVD »
 

Offline ecat

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Re: something cool i found in an old car alarm
« Reply #5 on: April 08, 2013, 11:06:17 am »
The give away is the 'C' in the name. 'F' in the name applies to Flash parts which can of course be reprogrammed - flashed. 'C' obviously stands for 'C'annot be reprogrammed ;)
 

Offline David_AVD

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Re: something cool i found in an old car alarm
« Reply #6 on: April 08, 2013, 11:58:09 am »
The give away is the 'C' in the name. 'F' in the name applies to Flash parts which can of course be reprogrammed - flashed. 'C' obviously stands for 'C'annot be reprogrammed ;)

Except the PIC16C84 which is a reprogrammable part.   :P
 

Offline Nickk2057

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Re: something cool i found in an old car alarm
« Reply #7 on: April 08, 2013, 12:26:30 pm »
yes but this one is the 73 model... which has 28 pins on it
just keep believing in yourself.. you can do some remarkable things in your life when you break through the ice and make things happen with the stuff you make
 

Offline Nickk2057

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Re: something cool i found in an old car alarm
« Reply #8 on: April 08, 2013, 12:29:59 pm »
eh... who knows..... maybe i can get it to work or not.... i guess i just have to find out myself..... now i got to get a breadboard for it -_-
just keep believing in yourself.. you can do some remarkable things in your life when you break through the ice and make things happen with the stuff you make
 

Offline dimlow

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Re: something cool i found in an old car alarm
« Reply #9 on: April 08, 2013, 12:47:11 pm »
ok.. i found an old car alarm that was pulled from a junk vehical that has a PIC16C73B-04/SP 033033C chip in it....

 which i found to be useful in most applications as i noted in the blogs on other websites... but i still can't find the scematic for it :( so that way i can program it to use in other stuff.. and hope it works for to program it with the arduino programing (if it works)

I appreciate your enthusiasm, but programming a OTP Microchip Pic with arduino programming, Your having a laugh. :-DD
 

Offline Nickk2057

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Re: something cool i found in an old car alarm
« Reply #10 on: April 08, 2013, 12:51:01 pm »
well i did find the pinout for it and it was NOT the exact pinout configuration... so no go on that XD
just keep believing in yourself.. you can do some remarkable things in your life when you break through the ice and make things happen with the stuff you make
 

Offline ecat

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Re: something cool i found in an old car alarm
« Reply #11 on: April 08, 2013, 02:54:14 pm »
The give away is the 'C' in the name. 'F' in the name applies to Flash parts which can of course be reprogrammed - flashed. 'C' obviously stands for 'C'annot be reprogrammed ;)

Except the PIC16C84 which is a reprogrammable part.   :P

So it is!
Oh well, so much for my eternal rule of thumb, now I need a new one :(

 

Offline David_AVD

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Re: something cool i found in an old car alarm
« Reply #12 on: April 08, 2013, 09:10:25 pm »
Yeah, the PIC16C84 is the only exception to the rule that I can recall.  I started programming with the PIC16C54 (way back when) and had to deal with using the JW versions for prototyping.  What a pain that was.  I did have a few JW parts on rotation in the eraser to cut the wait time down.

As for the OP, he must be trolling now.  The part in question is OTP.  There's no room for maybe in there.
 

Offline amyk

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Re: something cool i found in an old car alarm
« Reply #13 on: April 09, 2013, 08:48:03 am »
As for the OP, he must be trolling now.  The part in question is OTP.  There's no room for maybe in there.
OTP means you can turn 1s into 0s, just not the other way around... unless the part has security too (not unlikely).

X-rays may also be able to erase it.
« Last Edit: April 09, 2013, 08:52:16 am by amyk »
 

Offline David_AVD

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Re: something cool i found in an old car alarm
« Reply #14 on: April 09, 2013, 08:50:15 am »
Sure, you can always turn ones into zeros, but that's of very limited use.  Speaking of old chips, I have stacks of 16C84 and 16F84 chips laying around waiting to go in the bin.
 


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