Analog, Mixed-Signal and Power Management MC33813 One Cylinder Small Engine Control IC Applications • Motorscooter Engine Control Unit (ECU) Overview • Motorcycle Engine Control Unit (ECU) The 33813 is an engine control analog power IC intended for one cylinder motorcycle and other small engine control applications. The IC consists of five integrated low side drivers, two pre-drivers, a Variable Reluctance Sensor (VRS) input circuit, a voltage pre-regulator using an external pass transistor and two 5 volt internal regulators, one for the MCU VCC supply and the other for use as a protected sensor supply. Also included is an MCU reset control circuit with watchdog, an ISO 9141 K-Line interface for diagnostic communication and a Serial Peripheral Interface (SPI). The five low side drivers are intended for driving a fuel injector, a lamp, two relays or other loads and a tachometer. The pre-driver is intended to drive IGBT or MOSFET transistors to control ignition coils, and/or a HEGO heater. The device is packaged in a 48 pin LQFP with an exposed pad. • Small Engine Control for: Three-wheelers Lawn mowers Lawn trimmers Snow blowers Chain saws Gas-driven electrical generators Outboard motors Motorcycle and Small Engine Control Marine engines and personal watercraft MC33813 VBAT Keyswitch VBAT MCU VCC KEYSW VPROT ROUT2 VPWR LAMPOUT ROUT1 TACHOUT VPPREF O2HFB VPPSENS O2HOUT VCC O2HSENSP RESETB O2HSENSN +5V RESET SPI GPIO GPIO GPIO GPIO GPIO GPIO 4 SPI MRX MTX BATSW RIN1 RIN2 IGNIN1 GPIO INJIN1 GPIO GPIO VRSOUT O2HIN VRSP VRSN GND Crankshaft VRS VBAT 5V Sensor Supply Relay 2 (Power) MIL Relay 1 (Fuel Pump) TACHOMETER O2 Heater VBAT INJOUT1 ISO9141 IGNFB1 IGNOUT1 IGNSENSP IGNSENSN Injector VBAT ISO9141 Features • Designed to operate over supply voltage range of 4.5 V ≤ VPWR ≤ 36 V • Logic stability guaranteed down to 2.5 V • One Fuel Injector driver - Typically 1.3 A • One Ignition IGBT or General Purpose Gate Pre-driver • One O2 Sensor (HEGO) Heater General Purpose Gate Pre-driver • Relay 1 driver Typically 2.0 A, can be used for fuel pump control • Relay 2 driver Typically 1.0 A, can be used as power relay control • Lamp Driver Typically 1.0 A can also be used to drive a LED • VPROT Protected sensor supply tracks VCC +5 V regulator • MCU Reset generator -System Integrity Monitor (Watchdog) • VPP pre-regulator provides power for VCC and VPROT regulators • Independent fault protection with all faults reported via SPI • Interfaces directly to microcomputer (MCU) using 5.0 V SPI and logic I/O • ISO-9141 K-Line interface for communicating diagnostic messages • Start-Up/ shut-down control and power sequence logic for power control • Differential/single-ended VRS conditioning circuit with auto/manual selected thresholds and filter times with digital and tachometer outputs • Keyswitch logic with provision for power relay and MCU controlled shutdown. • ISO-9141 K-Line interface for communicating diagnostic messages Benefits • Product will eliminate many discrete devices on a PCB with improved reliability over current discrete designs • Integrated single cylinder control IC • Multifunctional ignition and injector driver • Ready to use evaluation kit available • Cost-effective solution with 16-bit MCU or 32-bit MCU • Automotive grade quality • Protection against short-circuit, over-current and over-temperature • Robust solution for harsh environments in compact, easy-to-use package • Freescale’s Product Longevity Program assures supply for 15 years after launch Performance Parametric Typical Values Output Type 5 Low-side drivers, 2 Pre-drivers, ISO9141 K-Line Bi-directional Operating Voltage (fully operational) 4.5 V to 36 V Continuous Current (minimum) 1.3 A for Injector Driver, 1.0 A for Lamp and Relay 2 drivers, Control SPI and Parallel ESD, Human Body Model ±2000 V Ambient Operating Temperature (TA) -40 °C to 125 °C 2.0 A for Relay 1 Driver Protection Protection Detect Over-voltage • Over-current/SC • Overtemperature • Open Load • Limiting • Shut Down Auto Retry • • Status Reporting • • • • • • Questions • Are you designing a control application for a small engine? • Is your local government planning to issue environmental regulations for small engines? • Are you planning to move from a mechanical to an electrical engine control system? • Do you need a reference design for a transition from mechanical to an electrical engine control system? • Is the space limited in your current electronically controlled small engine? • Do you want to consolidate/integrate multiple functions into a single IC? Orderable Part Numbers Part Number Temp Range (Ambient) Package -40 to 125 °C 48 pin LQFP-EP PC33813AE Note: Add R2 Suffix for Tape and Reel Documentation 48 pin LQFP-EP 98ASA00173D Document Number Title Description MC33813 One Cylinder Small Engine Control IC Data Sheet Development Tools Part Number Description KIT33813AEEVBE 33813 Evaluation Board (Contact Sales for Availability) KIT33813ECUEVM 33813 Reference Design (Contact Sales for Availability) Freescale: A Leader in Automotive Solutions Expanding on its more than 30-year heritage of automotive innovation and it’s highperformance products, Freescale’s solutions are designed with the right combination of high-performance capability, processing capacity and customizable software to help deliver smart, differentiated automotive solutions. With Analog, Mixed Signal, and Power parts, our vision is to offer a diverse and differentiated product portfolio to meet the expanding needs of the automotive, consumer and industrial segments. Freescale solutions offer ideal blends of functionality and intelligence designed to help our customers differentiate and win in highly competitive markets. For more information, visit freescale.com Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. Document Number: MC33813FS REV 1.0