S12P and MC33812 Small Engine Control Reference Design

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This NXP® reference design is a fully functional single cylinder engine control unit (ECU).

  • Features the NXP 33812 and 9S12P128 MCU devices
  • Can be configured for dual cylinder - note that the application must be able to tolerate simultaneous spark in both cylinders

Block Diagram

MC44812/S12P Small Engine

KIT33812ECUEVME Small Engine System Control - Block Diagram
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Supported Devices

Processors and Microcontrollers

16-Bit S12 and S12X MCUs

  • S12P: S12P Automotive and Industrial Microcontrollers (MCUs)

Power Management

Pre-Drivers

  • MC33812: Multifunctional Ignition and Injector Driver

Features

Functionality

  • Designed to operate over the range of ~4.7 V ≤ VPWR ≤ 36 V
  • Fuel injector driver current limit: 4.0 A typical
  • Ignition pre-driver can drive IGBT or Darlington bipolar junction transistors
  • Ignition pre-driver has independent high and low side outputs
  • Relay driver current limit: 4.0 A typical
  • Lamp driver current limit: 1.5 A typical
  • All external outputs protected against short to battery, over-current
  • Ignition and other drivers protected against over-temperature
  • Interfaces directly with to MCU using 5.0 V parallel interface
  • VCC voltage pre-regulator provides +5.0 V power for the MCU
  • MCU Power. On RESET generator
  • MCU watchdog timer circuit with parallel refresh/time setting line
  • Independent fault annunciation outputs for ignition and injection

Debugging

  • ISO-9141 K-Line transceiver for communicating diagnostic messages

Buy Options

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  • KIT33812ECUEVME
    Active

  • Reference Design - MC33812 / S12P, Small Engine Control.

  • Kit contains:

    • Assembled and tested evaluation board/module in anti-static bag
    • Miscellaneous cables (see packing list)
    • USB-based BDM tool for flash programming and debugging
  • $276.01 USD
  • For a quantity of 1
    • Availability: Pending Stock
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