MC33814 | Two Cylinder Small Engine Control IC | NXP Semiconductors

Automotive

Industrial

Consumer

Technologies

Two Cylinder Small Engine Control IC

MC33814 Active

Roll over image to zoom in

The NXP 33814 is an engine control analog power IC delivering a cost-optimized solution for managing one and two-cylinder engines.

  • With six drivers, three pre-drivers, a 5.0 V regulator for the MCU, a protected external sensor supply, and a high level of integration, the IC offers an ideal response to contemporary market requirements.
  • The innovative VRS system optimizes noise immunity under cranking conditions.
  • Diagnostic and protection features present on all outputs allow applications to operate with greater safety.
  • The device is packaged in a 48 pin LQFP with an exposed pad for a minimum space footprint.

Block Diagram

Two Cylinder Small Engine Control IC

Two Cylinder Small Engine Control IC
Get diagram PDF

Features

Key Features

  • Operates over supply voltage range of 4.5 V < VPWR < 36 V
  • Start-up/shut-down control and power sequence logic with KEYSW input
  • MCU supply: VCC is a 5.0V (±2.0%, 200 mA) regulated supply
  • Sensor supply: VPROT (100 mA) is a VCC tracking protected sensor supply
  • Two configurable pre-drivers for IGBT or general purpose gate MOSFETs for
  • Ignition and O2 sensor (HEGO) heater
  • PWM
  • Overcurrent shutdown
  • Short-to-battery shutdown
  • Six low-side drivers with full diagnostics, self-protection and PWM control
  • Two fuel injector drivers, RDS(on) = 0.6 Ω, ILIMIT = 1.8 A, to drive typical 12 Ω
  • High-Impedance Injectors
  • Relay 1 driver, RDS(on) = 0.4 Ω, ILIMIT = 3.0 A, to drive fuel pump
  • Relay 2 driver, RDS(on) = 1.5 Ω, ILIMIT = 1.2 A, to drive power relay
  • Lamp driver, RDS(on) = 1.5 Ω, ILIMIT = 1.2 A, to drive warning lamp or an LED
  • Programmable Tachometer Driver, RDS(on) = 20 Ω, Ishutdown = 60 mA, to drive
  • Tachometer display
  • Innovative configurable VRS conditioning circuit, with two different parameter
  • Settings for engine cranking and running mode and an optional automatic mode
  • Improve noise immunity in cranking conditions
  • K-line (ISO9141)
  • MCU reset generator and programmable watchdog
  • MCU Interface: 16-bit SPI and parallel interface with 5.0V IO capability

Buy/Parametrics

‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌

‌
‌
‌
‌
‌
‌
N true 0 PSPMC33814en 5 Application Note Application Note t789 2 Data Sheet Data Sheet t520 1 Fact Sheet Fact Sheet t523 1 Selector Guide Selector Guide t528 1 en_US 1 1 14.0 English The 33814 is an engine control analog power IC intended for two cylinder motorcycle and other small engine control applications. The IC consists of low side drivers, pre-drivers, a Variable Reluctance Sensor (VRS) input circuit, a voltage pre-regulator and two 5 volt internal regulators. Also included is a microcontroller unit (MCU), reset control circuit with watchdog, an ISO 9141 K-Line interface for diagnostic communication and a Serial Peripheral Interface (SPI). 1345133750403711686776 PSP 3.5 MB None None documents None 1345133750403711686776 /docs/en/data-sheet/MC33814.pdf 3470833 /docs/en/data-sheet/MC33814.pdf MC33814 N N 2017-07-11 Two cylinder small engine control IC - Data sheet /docs/en/data-sheet/MC33814.pdf /docs/en/data-sheet/MC33814.pdf Data Sheet N Y 980000996212993340 2022-12-07 pdf N en Oct 23, 2020 Data Sheet t520 Data Sheet Data Sheet Y N Two cylinder small engine control IC - Data sheet false en_US en Application Note Application Note 2 2 2 English This document details the different diagnosis available on MC33813; MC33814 low-side drivers and pre-drivers, their conditions and actions taken when a fault occurs. 1539363632890720014046 PSP 245.2 KB None None documents None 1539363632890720014046 /docs/en/application-note/AN12226.pdf 245231 /docs/en/application-note/AN12226.pdf AN12226 documents N N 2018-10-12 AN12226, Diagnostic application note for MC33813; MC33814 - Application note /docs/en/application-note/AN12226.pdf /docs/en/application-note/AN12226.pdf Application Note N 645036621402383989 2022-12-07 pdf N en Jun 11, 2020 645036621402383989 Application Note Y N AN12226, Diagnostic application note for MC33813; MC33814 - Application note 3 1.0 English This application note addresses some the theory of variable reluctance sensor (VRS) systems, as well as how to correctly determine the VRS automatic mode parameters through a single bench measurement. 1457722525593725195039 PSP 519.3 KB None None documents None 1457722525593725195039 /docs/en/application-note/AN5253.pdf 519300 /docs/en/application-note/AN5253.pdf AN5253 documents N N 2016-03-14 AN5253, VRS Automatic Mode Setting - Application Note /docs/en/application-note/AN5253.pdf /docs/en/application-note/AN5253.pdf Application Note N 645036621402383989 2022-12-07 pdf N en Mar 11, 2016 645036621402383989 Application Note Y N AN5253, VRS Automatic Mode Setting - Application Note Fact Sheet Fact Sheet 1 4 1 English The small-engine portfolio offers 3 easy-to-use engine control devices to deliver a cost-optimized IC solution for managing one- and two-cylinder engines. 1475854249408730124078 PSP 521.6 KB None None documents None 1475854249408730124078 /docs/en/fact-sheet/SMALLENGINELF.pdf 521575 /docs/en/fact-sheet/SMALLENGINELF.pdf SMALLENGINELF documents N N 2016-11-09 SMALLENGINELF, Small engine leaflet - Fact sheet /docs/en/fact-sheet/SMALLENGINELF.pdf /docs/en/fact-sheet/SMALLENGINELF.pdf Fact Sheet N 736675474163315314 2022-12-07 pdf N en Oct 3, 2016 736675474163315314 Fact Sheet Y N SMALLENGINELF, Small engine leaflet - Fact sheet Selector Guide Selector Guide 1 5 3 Chinese 1404924651029729642615zh PSP 1.2 MB None None documents None 1404924651029729642615 /docs/zh/product-selector-guide/INDCONTANLPRDFL.pdf 1202686 /docs/zh/product-selector-guide/INDCONTANLPRDFL.pdf INDCONTANLPRDFL documents N N 2016-10-31 Analog Automotive and Industrial Selector Guide /docs/zh/product-selector-guide/INDCONTANLPRDFL.pdf /docs/zh/product-selector-guide/INDCONTANLPRDFL.pdf Selector Guide N 553557935274807777 2025-01-05 zh Sep 18, 2014 553557935274807777 Selector Guide Y N 面向工业市场的模拟产品 - 简介 12 English For system designers who want more efficient motor operation with variable speed and sensorless control, NXP offers H-bridge, brushed and brushless DC motor drivers required to complete system design. 1404924651029729642615 PSP 1.2 MB None None documents None 1404924651029729642615 /docs/en/product-selector-guide/INDCONTANLPRDFL.pdf 1202686 /docs/en/product-selector-guide/INDCONTANLPRDFL.pdf INDCONTANLPRDFL documents N N 2016-10-31 Analog Automotive and Industrial Selector Guide /docs/en/product-selector-guide/INDCONTANLPRDFL.pdf /docs/en/product-selector-guide/INDCONTANLPRDFL.pdf Selector Guide N 553557935274807777 2025-01-05 pdf N en Jan 29, 2021 553557935274807777 Selector Guide Y N Analog Automotive and Industrial Selector Guide false 0 MC33814 downloads en true 1 Y PSP Application Note 2 /docs/en/application-note/AN12226.pdf 2018-10-12 1539363632890720014046 PSP 2 Jun 11, 2020 Application Note This document details the different diagnosis available on MC33813; MC33814 low-side drivers and pre-drivers, their conditions and actions taken when a fault occurs. None /docs/en/application-note/AN12226.pdf English documents 245231 None 645036621402383989 2022-12-07 N /docs/en/application-note/AN12226.pdf AN12226, Diagnostic application note for MC33813; MC33814 - Application note /docs/en/application-note/AN12226.pdf documents 645036621402383989 Application Note N en None Y pdf 2 N N AN12226, Diagnostic application note for MC33813; MC33814 - Application note 245.2 KB AN12226 N 1539363632890720014046 /docs/en/application-note/AN5253.pdf 2016-03-14 1457722525593725195039 PSP 3 Mar 11, 2016 Application Note This application note addresses some the theory of variable reluctance sensor (VRS) systems, as well as how to correctly determine the VRS automatic mode parameters through a single bench measurement. None /docs/en/application-note/AN5253.pdf English documents 519300 None 645036621402383989 2022-12-07 N /docs/en/application-note/AN5253.pdf AN5253, VRS Automatic Mode Setting - Application Note /docs/en/application-note/AN5253.pdf documents 645036621402383989 Application Note N en None Y pdf 1.0 N N AN5253, VRS Automatic Mode Setting - Application Note 519.3 KB AN5253 N 1457722525593725195039 Data Sheet 1 /docs/en/data-sheet/MC33814.pdf 2017-07-11 1345133750403711686776 PSP 1 Oct 23, 2020 Data Sheet Data Sheet The 33814 is an engine control analog power IC intended for two cylinder motorcycle and other small engine control applications. The IC consists of low side drivers, pre-drivers, a Variable Reluctance Sensor (VRS) input circuit, a voltage pre-regulator and two 5 volt internal regulators. Also included is a microcontroller unit (MCU), reset control circuit with watchdog, an ISO 9141 K-Line interface for diagnostic communication and a Serial Peripheral Interface (SPI). None /docs/en/data-sheet/MC33814.pdf English 3470833 None Data Sheet 2022-12-07 N /docs/en/data-sheet/MC33814.pdf Two cylinder small engine control IC - Data sheet /docs/en/data-sheet/MC33814.pdf documents 980000996212993340 Data Sheet N Y en None Y t520 pdf 14.0 N N Two cylinder small engine control IC - Data sheet 3.5 MB MC33814 N 1345133750403711686776 Fact Sheet 1 /docs/en/fact-sheet/SMALLENGINELF.pdf 2016-11-09 1475854249408730124078 PSP 4 Oct 3, 2016 Fact Sheet The small-engine portfolio offers 3 easy-to-use engine control devices to deliver a cost-optimized IC solution for managing one- and two-cylinder engines. None /docs/en/fact-sheet/SMALLENGINELF.pdf English documents 521575 None 736675474163315314 2022-12-07 N /docs/en/fact-sheet/SMALLENGINELF.pdf SMALLENGINELF, Small engine leaflet - Fact sheet /docs/en/fact-sheet/SMALLENGINELF.pdf documents 736675474163315314 Fact Sheet N en None Y pdf 1 N N SMALLENGINELF, Small engine leaflet - Fact sheet 521.6 KB SMALLENGINELF N 1475854249408730124078 Selector Guide 1 /docs/en/product-selector-guide/INDCONTANLPRDFL.pdf 2016-10-31 1404924651029729642615 PSP 5 Jan 29, 2021 Selector Guide For system designers who want more efficient motor operation with variable speed and sensorless control, NXP offers H-bridge, brushed and brushless DC motor drivers required to complete system design. None /docs/en/product-selector-guide/INDCONTANLPRDFL.pdf English documents 1202686 None 553557935274807777 2025-01-05 N /docs/en/product-selector-guide/INDCONTANLPRDFL.pdf Analog Automotive and Industrial Selector Guide /docs/en/product-selector-guide/INDCONTANLPRDFL.pdf documents 553557935274807777 Selector Guide N en None Y pdf 12 N N Analog Automotive and Industrial Selector Guide 1.2 MB INDCONTANLPRDFL N 1404924651029729642615 true Y Products

Documentation

Quick reference to our documentation types.

Filters

5 documents

Compact List

Application Note (2)
Data Sheet (1)
Fact Sheet (1)
Selector Guide (1)

Design Files

Hardware

Quick reference to our board types.
Filters

1 hardware offering

Software

Quick reference to our software types.

Filters

1 software file

Note: For better experience, software downloads are recommended on desktop.

Engineering Services

2 engineering services

To find additional partner offerings that support this product, visit our Partner Marketplace.

Support

What do you need help with?

Search