1996 Jeep Grand Cherokee Limited BSI MC68HC11E9 reading help needed

[ledojo]

I've removed the Motorola chip--supposed to be a MC68HC11E9...
The chip has printed on it: SC400688CFN2....

Also, it's a 68-pin vs what UUSP says.

I searched for a datasheet in hopes of reading it anyways, but can't find anything (what happened to google?)

Anyone have experience or a suggestion or even a datasheet?

The only thing I've got is UUSP though and the adapter for the PLCC is for reading TI chips. Maybe put the chip back on the board and solder leads?

Any advice will be appreciated.

Thanks.

[ledojo]

oh, I do have DMII, but it doesn't have that model year...

Anyone?

[tachonow]

You can read it incircuit.
This model work also via obd with proper tools.

[Zmann]

If 68 pin chip I don't think it's a HC11 of E family, cant find this package on the E datasheet. Could it be one of K family with PLCC68 package?

[ledojo]

You can read it incircuit.
This model work also via obd with proper tools.

That's what it seemed like from the UUSP manual, but the pin-count differs... I couldn't find the datasheet online though. If I could find that, then I think I could figure it out from there... alas....And, I believe you are correct on the OBD thing, but DMII doesn't seem to have that option and I don't have the proper tools for that method.


If 68 pin chip I don't think it's a HC11 of E family, cant find this package on the E datasheet. Could it be one of K family with PLCC68 package?

I can't figure it out myself. I googled the numbers printed on the chip but nothing of use. I can post a photo if it would help? From googling, it does seem to be an obsolete mcu.

I think in tachosft, it states as MC68HC11E9, but that's as far as I could get. For sure, it is a 68-pin.

[audiotek]

Can you post a picture of the MCU? check this picture, the mask is in red, 0D46J = MC68HC11A8.

[ledojo]

Can you post a picture of the MCU? check this picture, the mask is in red, 0D46J = MC68HC11A8.

oh... i really am a newb at this lol... so, I will check the printed mask (hopefully?) and then determine the mcu? Will do it first thing in the morning.

[ledojo]

Here's a pic...
http://i53.tinypic.com/2k57ax.jpg

SC400688CFN2
04745407
? '93 CHRY
3C13WQEGU9615

Any help would be great! I really need to put this back together, but I'm getting nowhere....:hmpf:

[pepi]

This mask is MC68HC11L6
PLCC -68.
OSC -7,8
RESET- 23
TXD -28
RXD -26
MODA -3
MODB -2
GND -1,27,44,68
VDD -10,33,34

change chrystal to 8mhz
I hope this will help you

[ledojo]

This mask is MC68HC11L6
PLCC -68.
OSC -7,8
RESET- 23
TXD -28
RXD -26
MODA -3
MODB -2
GND -1,27,44,68
VDD -10,33,34

change chrystal to 8mhz
I hope this will help you

ME, TOO! Thank you--will try it!!!

[ledojo]

change chrystal to 8mhz
I hope this will help you

Instead of getting a crystal (which I don't have) can I put it back on the board and lift 10 and read?

[audiotek]

Instead of getting a crystal (which I don't have) can I put it back on the board and lift 10 and read?

You can read it in-circuit without lift any pin with UUSB:

[ledojo]

I put it back on the board and all was well.

Thank you, everyone, for the input and mcu id.