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Honda as a performer of electronic assemblies for Civic 4, 5 and 6 generation companies have chosen Denshing and Keihin, very often you can find their logos on Board ECU of the brain and the injectors. As microcontrollers brain ECU was selected two companies, it is NEC and OKI. Moreover, NEC raised more in SFI, in view of its reliability and simplicity, the OKI company mainly engaged in the production of chips for its equipment — printers. Microcontrollers series M66 OKI was used in the ECU OBD0, OBD1 and OBD2. They are based on the core NX-8. The only difference is the different peripherals of the microcontroller, memory, speed, and course type.

Nintendo, one of the steps in the suffering of Kondopoga

Nintendo, one of the steps in the suffering of Kondopoga

the

Basic microprocessors Honda ECU

the
    the
  • MSM66101 — nX-8/100
  • the
  • MSM66201 — nX-8/200
  • the
  • MSM66207 — nX-8/200
  • the
  • MSM66301 — nX-8/300
  • the
  • MSM66417 — nX-8/400
  • the
  • MSM66556 — nX-8/500S
  • the
  • MSM66589 — nX-8/500S

here are the versions of the microcontrollers most commonly used in the Honda boards, I also bring a small reference material and location in different models of ECU Honda Civic and such.

\n\nthe

Processor OKI msM66201 (M66201 ), OBD0

M66201-230 (D13B,D13B2)
9024-F24-p01 — 8MHZ

M66201-234
0032-F20-P74 (37700-p74-003 ZC SOHC CARB) — 8MHZ

the
    the
  • ROM: 16Kb
  • the
  • RAM: 512b
  • the
  • Minimum execution time of instruction: 400ns @ 10MHz
  • the
  • 16-bit CPU
\nthe
    the
  • EA = 27 PIN
  • the
  • P3.1 = RXD PIN 39
  • the
  • P3.0 = TXD PIN 38

Download microcontroller description: Datasheet

On the Board is found (not always) place in external memory — external memory rom

\n\nthe

Processor OKI msM66207 (M66207), OBD1

the Most popular CPU, the codes disassembled, there are many programs like CROME to edit and change programs .

37820-P06-G51
M66207-249 — 10MHZ

37820-P06-G00\nM66207-313 — 10MHZ

\nthe
    the
  • ROM: 32Kb
  • the
  • RAM: 1024b
  • the
  • Minimum execution time of instruction: 400ns @ 10MHz
  • the
  • 16-bit CPU
\nthe
    the
  • EA = 27 PIN
  • the
  • P3.1 = RXD PIN 39
  • the
  • P3.0 = TXD PIN 38

Download microcontroller description: Datasheet

On the motherboard, usually there is a place for external memory — external memory rom

\n\n\n\n\n\nthe

Processor OKI msM66507 (M66507,66507), OBD2

the

    CAT66507-306
    37820-P2Y-G51 — 24MHZ

    the
      the
    • Minimum time of statement execution: 167ns (@24MHz)\nthe
    • 16-bit CPU
    • the
    • of Program memory space : 64Kb
    • the
    • Internal ROM : 48K bytes
    • the
    • Data memory space : 64Kb
    • the
    • Internal RAM : 1.5 K bytes
    • the
    • EA =82 PIN

    Download microcontroller description: Datasheet

    the Board is not a place under external memory.

    \n\n\n\nthe

    Processor OKI msM66589 (M66589), OBD2

    was Raised more often in a small case ECU, surprised that the processor and motherboard are the same for 99-00 Civic and the Honda S2000.

    M66589-883
    37820-PHX-G92 — 20mhz bandwidth

    M66589-146
    37820-PCX-A01 — 20mhz bandwidth

    M66589-877
    37820-P2J-71 — 20mhz bandwidth

    Download microcontroller description: Datasheet

    the Board is not a place under external memory.

    \n\n\nthe

    Processor NEC UPD78214 (D78214CW), SFI

    most Often used in the car without the VTEC system, D13, D14 (except D14Z), D15, D16. Honda Civic, Integra, Partner and others. An interesting feature of the brain P2C on the block D15b (D15Z9) is able to control the variator. As described once on the website EJ9, circuit Board on the VTEC systems are the same as conclusions.

    D78214CW(a)-962
    37820-p3X-G01 12MHZ

    D78214cW(A)-98
    37820-P76-902 12MHZ

    D78214CW(A)-999
    37820-p3X-G01 12MHZ

    Download microcontroller description: Datasheet

    Download additional description of the microcontroller: Datasheet

    the Board is not a place under external memory.


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    Данная статья актуальна для автомобилей Honda выпуска 1992-2000 годов, таких как Civic EJ9, Civic EK3, CIVIC EK2, CIVIC EK4 (частично). Информация будет актуальна для владельцев Honda Integra в кузовах DB6, DC1, с моторами ZC, D15B, D16A.

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EJ9 и EK3 — записки инженера о Honda Civic 1998. 2010 – 2019 . Вся информация приводится для ознакомления, автор не несет ответственности за вред полученный в результате применения материалов сайта, находясь на сайте вы подтверждаете своё согласие с этим. Сделано Хондоводом для Хондоводов. Автор: Илья Серб Все изображения имеют авторство Карта сайта Honda Civic, всем VTEC!

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