Freescale programmable solenoid controller reduces emissions for direct fuel injection engines

January 15, 2014

Toni_McConnel-January 15, 2014

The MC33816 programmable solenoid controller from Freescale Semiconductor is designed to reduce emissions and improve fuel efficiency for both gasoline and diesel direct fuel injection engines. The flexible architecture is also applicable for driving dual clutch transmissions, as well as precision solenoids in factory automation applications. The MC33816 embeds intelligence with four integrated μCores, enabling four parallel tasks to run independently of the main system microcontroller. The result is a response time up to 16x faster than traditional architectures, thereby improving engine efficiency with precise fuel delivery that reduces unnecessary fuel use.

The device’s functional integration enables substantial bill-of-materials reductions, and provides the flexibility and scalability necessary to be easily integrated into virtually any engine system, including gasoline, diesel, flex-fuel and even LNG engines, regardless of the number of cylinders.

The intelligent MC33816 controller additionally provides embedded encryption and microcode protection to inhibit reverse engineering and help safeguard system IP and software.


Additional features include:
  • 9-32 V continuous supply, 5.5-58 V transient
  • Up to 72 V pre-driver operating range
  • Precision peak and hold drive capability
  • Integrated DC-DC boost converter control circuitry
  • Choice of four programmable slew rates 12.5 V/uS – 300 V/uS
  • 10 x 10 mm 64-pin LQFP-EP package

Freescale provides hardware and software to support the MC33816 programmable solenoid controller. The KIT33816AEEVM evaluation board allows utilization of the controller’s functions and is available now at  for a price of $216 (USD). To demonstrate the embedded functions of the MC33816 programmable solenoid controller, download software with SPI generator (SPIGen).

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