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Hello everyone.

I have a problem with a sbc that I am repairing, the sbc is controlled by an 8-bit OTP microcontroller which I think is broken. I only get 200 ohms between pin Vcc and Vss, specifically the chip is COP87L84BC and is out of production. What I try is to read the registers of the microcontroller with a cable ISP and any similar software WinPic800 but for this chip. I never use the COP8s OPT of National Semiconductor so I wanted information about this MCU or web sites where I can find information.

Thanks to all!!

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welcome to the dark side of rapidly evolving technology :/ – Jason S♦ Nov 26 at 5:50
jotasa, I know you are probably losing hope, but I should be able to read all of their documents this thursday evening and get you an answer. – Kortuk♦ Nov 29 at 18:42
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 I am not going to make this an answer, as it is not one, I do not see more information about it easily, but the datasheet is all I need to reverse engineer it. You should be able to do everything this chip does with a 3 dollar PIC. If you could figure out what this chip is connected to(Pin numbers are important) I can help post an answer about how to approach a reverse engineering job. You really need a working one for a full reverse engineer, or see if the system engineers will give you more information since it is out of production. – Kortuk♦ Dec 4 at 1:15
I don´t think you can read any information at all from this chip, and even if you can, what´s for? You cannot buy it anymore. Spend your time writing code for a new MCU, forget about COP8! – Andre Oliveira Jul 8 at 2:49

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