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| JOSE |
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got bored the other day and opened up an old EA ECU i had laying around, not much interesting (just the usual stuff i find when i pull any solid state device apart) cept for that three of the chips were made by intel, no worthwhile info came up via Google, the surprising thing was that the BIG one (i assume it the processor) is a 1979 era chip, damn thats old
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| mspw |
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8080 or 8085? Z80's and 6800's are still being used around the place in all soughts of different things. not uncommon.
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| LSD |
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A bit of Googling led me to discover it's most likely to be an 8061, which is a derivative of the 8051. The other two chips are most likely to be an 8763 EPROM (this one will be easy to spot as it'll most likely have a piece of paper stuck to the centre of it. This is to stop UV light leaking in and erasing it) and an 81C61 RAM and I/O chip.
1979 sounds about right, the EEV-IV design dates back that far. You also have to remember that the EA isn't all that young either, the chip would have only been about 6-7 years old in 1988 
I found this PDF on the EEC-IV in my travels: http://stealth316.com/misc/eectch98.pdf It has a fairly substantial section on the 8061 CPU at the heart of it.
_________________ Team Argon Silver |
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| data_mine |
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I just happen to have an EEC5 next to me. There's a few diff brands of chips in it, Intel, Motorola, Phillips, Texas Instruments
Intel: N8065EB F8 76001CCHFA ICB780M01 L8020064 9802 N70007FWCAGA S7909 U74713 7B0 ©FOMOCO INTEL©'91'96 N81C66DB F8 5021SC064 IEA782M01 L8011409 Motorola: FOA 71003SL001 XAA9750 70015BB XAA 9740 TI: two of these 7CDH8RT 71001FB/903T01 three of these 7BA1D31 74009PC Phillips: 70030BB 7014 9748h Others: 7015FB 885S02AA CS97 48J 648 70023BB 086M01 CS9804H ESTF-AA DAC09739
_________________ 1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow |
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| raiki |
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The EEC IV and V both used a 16 bit microprocessor, 8061 and 8065 respectively. The V run at a higher clock speed.
This sounds pretty poor when you think you home PC either 32 or 64 bit but when you put it in perspective, what sounds poor is actually quite powerful.
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| JOSE |
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most the little ones are just logic gates, nothing special really.
LSD, you got all of em right, the one with the paper has something to do with the ODBC port (what does it do by the way?) the edge connector on it looks familiar (but i dunno from where) is it an oldschool floopy drive edge connector? Only home PC's (and supercomputers) need the huge amounts of power we see today, hell my graphics calculator (Ti 89) could probably run my car (and the space shuttle) - maybe because these embedded CPU's arent weighed down by windows huh? I downloaded that PDF file, most of it seems to be related to 'stangs, most of it was waaaaay over my head, although the bits about the timing advance/retard looked interesting
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| LSD |
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The EPROM is what (typically) holds the programming for the ECU. What you'll probably find is that the hardware remains exactly the same no matter what car its in only they use different EPROMs to enable disable/different features. The edge connector is probably a diagnostic connector or something. I'm guessing it's used to simulate the presence of the EEPROM while they work out what configuration to use for the car it's going into (among other things).
_________________ Team Argon Silver |
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| data_mine |
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{USERNAME} wrote: most the little ones are just logic gates, nothing special really.
LSD, you got all of em right, the one with the paper has something to do with the ODBC port (what does it do by the way?) the edge connector on it looks familiar (but i dunno from where) is it an oldschool floopy drive edge connector? Only home PC's (and supercomputers) need the huge amounts of power we see today, hell my graphics calculator (Ti 89) could probably run my car (and the space shuttle) - maybe because these embedded CPU's arent weighed down by windows huh? I downloaded that PDF file, most of it seems to be related to 'stangs, most of it was waaaaay over my head, although the bits about the timing advance/retard looked interesting It's an ODB or ODB-II port, it is a diagnostics connector. The J3 (old-skool floppy connector), is where 'chips' get installed (ala chiptorque) and yes it can override the programming in the PROM (which isn't erasable, so no paper on it to protect from UV). J3 can also be used to download the contents of the ROM with the homemade 'EECsucka' or 'son-of-sucka' devices. The 8061 and 8065 were a joint effort between Intel and Ford - if you notice one of the ones I detail above, has a ©FOMOCO on it.
_________________ 1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow |
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| madmax |
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Does this mean I can overclock my ECU
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| JOSE |
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damn, now i got going on the whole EECsuck / editing thing, now my head hurts.
{DESCRIPTION}
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| data_mine |
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{USERNAME} wrote:
Damn my impulsiveness - just dumped US$179 on EEC read/burner parts.
_________________ 1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow |
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| JOSE |
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lol, let me know how you get on with it, i really want to play with the EEC IV
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| Milehighxr |
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The edge connector on the side of the EEC_iv module is the J-3 service part. Normally covered by a warranty sticker. It is not used for OBD. On the NA and some Euro Fords the OBD connector(pre OBD-2) was in the engine bay somewhere near the battery. $64000.00 question: anyone ever use or see a Ford Calibration Console???
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