Help Identifying Microprocessor footprint - Page 1
Forum section: electronics / beginners

author: ironmanisanemic
author_rank: Newbie
timestamp: December 28, 2020, 12:42:25 am
content: Hello,I am working on reverse engineering some fuel injection controllers, and am wanting to recreate the schematics and possibly spin new boards. Im hitting a roadblock, im having a hard time finding a matching footprint for the Microprocessor. The processor is a custom Intel unit so no datasheet is publicly available. I know I can just measure it and create the footprint in KiCad, and i probably will have to do that, but i would like to know what this specific footprint is called and if there are any standard spacings. Closest i can find is a Quad inline package. The processor is laid out like a quad flat pack, but with the staggered through hole arrangement.

author: Doctorandus_P
author_rank: Super Contributor
timestamp: December 28, 2020, 12:50:49 am
content: I do not have the exact answer you are looking for, but you may be interested in RusEFI.https://kicad.org/made-with-kicad/page/3/https://github.com/rusefi/rusefi/wikiIt is an open source project for a fuel injection controller:1. PCB made in KiCad (project available).2. STM32 controller with source code on github.I have not used it myself, so I do not know if it even works.

author: ironmanisanemic
author_rank: Newbie
timestamp: December 28, 2020, 12:55:02 am
content: i have run across rusefi, and its another project that is much more universal than the controller that i am working on. Most if not all the parts are custom labeled so identifying them all has been a challenge on the boards i am trying to reverse engineer.

author: ataradov
author_rank: Super Contributor
timestamp: December 28, 2020, 01:51:47 am
content: Dual-side (equivalent of DIP) version of this is often called quad in-line package (QUIP).But as far as I know by the time JEDEC standardized the packages, this was not considered, so there are no real standard for this.

author: wraper
author_rank: Unknown
timestamp: December 28, 2020, 02:05:04 am
content: For me it's hard to understand how knowing the footprint will help you in any way to recreate the circuit.

author: ironmanisanemic
author_rank: Newbie
timestamp: December 28, 2020, 02:13:20 am
content: I dont need it to recreate the circuit, but since i have to make the component in KiCad anyway, i might as well make the footprint. Also, im wanting to create a new PCB so i would need the footprint

author: wraper
author_rank: Unknown
timestamp: December 28, 2020, 02:18:23 am
content: Just use some package with the same pin count. Or create your own.QuoteNo, you don't. You will need to use a different part with different footprint. Unless you want to salvage ICs from old boards. Also part number is not visible on the picture. I guess it's some standard MCU with mask ROM.

author: amyk
author_rank: Super Contributor
timestamp: December 28, 2020, 02:55:11 am
content: https://en.wikipedia.org/wiki/Intel_8061http://www.cpushack.com/gallery-1/intel/intelp8061bh-3-8710/(Sorry if OP wanted to keep it a secret, but I recognised that chip right away...)No internal mask ROM.You can try to look into early Intel databooks to see if they had another chip with this package, but measuring it (dimensions are likely to be standard) is probably the best way to go. If I were to try to give it a name, I would say QZIP...

author: ironmanisanemic
author_rank: Newbie
timestamp: December 29, 2020, 08:38:15 pm
content: Yes it is for the Intel 8061 microprocessor that was only used for this application. I didn't bring it up because I didn't feel it was relevant at the time. But from what I'm hearing from you guys is its probably not a standard package so I will just have to measure it out myself and recreate it. I already have to do that with quite a few other components so far. And yes I will be salvaging a few key components that are not available anywhere else.

author: wraper
author_rank: Unknown
timestamp: December 29, 2020, 08:43:22 pm
content: This chip most likely came with long flat leads and they were shaped only at assembly factory per customers preference.

author: S. Petrukhin
author_rank: Super Contributor
timestamp: December 30, 2020, 12:13:42 pm
content: Quote from: wraper on December 29, 2020, 08:43:22 pmLaugh at me: when I saw russian chips in such cases, I thought that they were inserted into a huge polycarbonate connector (I have one such) and he was afraid of them. I did not realize that their conclusions can be formed independently as you wish-at least in three rows of SMT.You have opened up the world of russian chips to me.It remains to find out whether suppliers can do formatting at the request of the customer.

author: xpr2_2
author_rank: Newbie
timestamp: June 14, 2021, 02:01:35 pm
content: hii signed up to this website so i could reply to this thread , i understand this is an old thread I'm not sure how far you have managed to get with the 8061, as you may have already discovered its a very difficult chip to find information on. but recently there has been a large cash of information that had uploaded regarding the chip. and various eec-iv & eec-v ecu's which have this chip. there is a pdf available which covers the chip.regarding the connector type , , its possibly a PGA 68pin or possibly 64pin. but as i haven't removed it from the ecu board i can't be sure?!that is me looking night and day. (off work due to back injury nothing better to do)am i able to list links ?thanksAdam

author: wwhite
author_rank: Newbie
timestamp: February 08, 2022, 08:00:11 am
content: Well, the 8061 came in two packages, a 40-pin lead and a 68-pin lead.The 68 pin, could have been a Plastic Flat/Pack Pinout or Plastic Leaded Chip Carrier(PLCC).Maybe these images will help you:IC1 8061 CPU[attachimg =1]8061 68-pin lead[attachimg =2]

author: CaptDon
author_rank: Super Contributor
timestamp: February 08, 2022, 02:53:28 pm
content: Rockwell in the 80's and 90's was famous for that stagger pin configuration. Does Rockwell even make I.C.'s anymore??