The IC inside the CDI

[Louis]

Hello Guys,

Have lost count off who has a SUGO 70 CDI box for the 3MA's

In my spare time I'm investigating the possibilities off the EPROM
(that is fitted on the 3ma circuit board)

Even joined a Dutch forum that is more into the IC's and circuits then I am

Well what do I have found this far (although its not that mutch )


The IC's are made by Fujitsu and are custom made for the Yamaha tzr's

First number:
-D 071050-0081
This indicates where the IC is build fore.

Second number:
-511 200M
This indicates some info about the processor/speed/program
(still looking for the correct answer)

Third number:
-8907 Z04
This indicates the production date of the IC
In our case 7 month off 1989 (07-1989)

It ill be very difficult to get hold of the program route they have inside.
But still trying to get hold off.
Probably the Intel could be a 8048-core ore a 8051-core

For my search I'm missing some data, Like to know the Sogo IC

What I have is this:

3MA1 00 IC:
-D 071050-0081

3MA1 01 IC
-D 071050-0140

TZ250 3LC IC
-D 071050-0160

3MA1 SUGO
-?

So who want to peek inside his 3MA SUGO box, to read the numbers on the chip
Don't mean you should destroy your box , normally if you gently remove the frond you can pull the circuit board out.

Also like to invite the ones that are more into the ic's or have some know how about this.
Share some thoughts with us (or pm me if you have some ideas)

Remember this is just for the hobby.
I know that a free programmable ignition is much easier to get hold off.
Personally just like to go a bid deeper inside this material to explore the possibilities

Cheers guys

[mbsteve]

Have lost count off who has a SUGO 70 CDI box for the 3MA's

It's me! Let me see if I can open it.

FYI I have a open 3XV-00 box that is open and exposed of the whole board.

[Louis]

Hello,

That would be great if you want to open the sugo box.
Realy like to know which codering the IC has.

If you have the 3xv-00 box open, then yes.
Interesting to see if it is about the same
(like the 3ma3 separated box's)

[mbsteve]

Here is the 3XV-00

[Louis]

Ok thanks,

Its also a 42pins IC, think they where used a lot in those days.
''ND'' should be a nippondenso IC (if i'm right)

Is it just the picture, or do the two condensators look differently in seize?


Any luck on the 3MA SUGO CDI

[Need4speed]

Hi Louis
Dont know if this can be at any help

[Louis]

Hi,

How more IC's the better

Is surprised me a bid.
The 3ma-10 cdi is used on the 3ma3 and 5 bikes all coming from the year 1990

My 3ma-10 IC has the bottom number
-9002
I thought build in 1990 second month (02-1990)
http://www.tzr3ma.com/3ma-10-cdi.html

But your 3ma-10 IC has the bottom number
-8950
So yours should be build in 1989 the fifth month (05-1989)

Start to doubt if my theory of year is right
Or it could be that the ic's are produced between 89 and 90 so they can pup up in different years

I almost thought I had it, but its the wrong one:
http://pdf.datasheetarchive.com/indexerfiles/Scans-059/DSA2IH0049784.pdf

Will investigate this.
Thanks for sharing

[4l04ever]

The date stamps could be week number i.e.  8950 = 1989 Week 50

[jools]

That is the normal method

[Louis]

Hello Guys,

Ok, year/week sounds more logical

Great you guys thinking with me.
Started this topic with the intension to gather info so hopefully in the end we have a good idea witch ic's are used.

Just fore the record, this is not my field off expertise. So I may make a few mistakes on the way

Have contact now with somebody from www.bruco.nl
Its a company with does know his ways with IC"S
So hopefully they can push me in the right way.

Any off you more into the circuit boards?

[yanw]

I have a little bit of experience with embedded systems (PIC mostly). I'm not sure how much value I can add but I'm following this thread with interest.

[Louis]

Hello Yanw,

Ok, that's programming/reading IC's if I'm right.

Do you think it will be possible to read out a Ic like this? (if i solder it lose of course)
If this is possible, will the data tell us anything or will that be to complicated??

Don't walk a way from this tread

[yanw]

Ok, that's programming/reading IC's if I'm right.

My experience is with http://en.wikipedia.org/wiki/PIC_microcontroller but I have an understanding of embedded systems.

Do you think it will be possible to read out a Ic like this? (if i solder it lose of course)
If this is possible, will the data tell us anything or will that be to complicated??

I'm not sure if we could easily read the IC. The first step is to try and get a datasheet for the IC (or similar IC) and create a logical schematic of the printed circuit board to identify which pins are receiving which input/output. If it is an eeprom then you might be able to get a dump from it but I'm a bit hazy on this.

What I think you are trying to get to is an understanding of the 3 dimensional ignition advance map. This might be easier to get by treating the CDI as a "black box" and feeding it a range of inputs and correlating the outputs. I think this is what Borat  (?) does.

Don't worry, I'll keep an eye on this thread.

[tzr-v4]

If we get the data sheet of the IC it should be easy to design a IC replacement board with more modern uc like PIC.
So we can keep the analogical components and get a programmable ignition based on original Yamaha design.

I've checked without luck the data sheet of the UC component in the RZ500 or 1KT YPVS box and in the Tachometer.
Looks like especially made components.

But who knows... so keep looking.

[mbsteve]

I don't know if you guys know about the YES/SUGO kit ignition for the TZ250 where it has adjustable settings. The small selector box has 6 or 7 settings and it plugs into the CDI box. The looks of the CDI is no different than a stock TZ/3XV except and extra plug on it. The IC has about 6 pins that are not connected and I am wondering if you ground one of the out at time it changes the map settings.