68hc11

[EngJW]

I am curious about what cars, production or racing, use the 68hc11 microcontroller in the ECU. I heard that GM did at one time.

Thanks,
John Woodward

 

[PeterPan007]

You probably will not find any "modern" applications with a 68hc11, due to the fact that current engine ecu's require more capacity than these relative simple older ecu's. In other words to use a 8 bit controller now a days will not meet the ecu's requirements. The current standard are 32 bit controllers around 40mhz.

Regards

 

[EngJW]

I am only aware of them being used currently for industrial engines, as these are not too demanding. They only need control of fuel, spark, and governor. I wonder what aftermarket kits might be using it.

The 68hc11 must be a very popular microcontroller. There are several books about it and even college courses.

John Woodward

 

[NickB]

88-94 and some 95 Chrysler engine computers used 6811's. Many GM's have too, but i don't know years.

 

[boy23]

I know 68HC11 but I don't know the ATAPI port: the protocol to use in order to read an audio CD with a 68HC11 by a PC CD-ROM reader, if someone could help me, I will be very happy and it will also be very usefull for me, thanks you.

 

[Emmet]

You may wish to look at Motorola's DSP56800 series processors. For 1/3 of the price of an HC11, you can easily get 10 times the performance, better A/D's and better peripheral selection.

 

[bradrs]

As someone else pointed out, GM did for a while, and on the bike side, Ducati used them in their early 916/996 ECUs. I think some companies used a proprietary chip that was very similar to an HC11.

Emmet, how did you get that the dsp is 1/3 the cost? The HC11E9s I use are running around $9 last I checked.

 

[Emmet]

Bradrs: Sorry - was thinking of the HC811's that we're phasing out of our products... apologies...

 

[DMan1]

Pretty sure (75%) the Buick Grand National 86-87 uses 68hc11.

Denis Kefallinos