PC33814AE datasheet, PDF - EEWORLD Datasheet

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PC33814AE: DescriptionTwo Cylinder Small Engine Control IC; File Size1MB，50 Pages; ManufacturerFREESCALE (NXP)

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PC33814AE Overview

Two Cylinder Small Engine Control IC

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Freescale Semiconductor

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Document Number: MC33814

Rev. 1.0, 8/2012

Two Cylinder Small Engine

Control IC

The 33814 is an engine control analog power IC intended for two cylinder

motorcycle and other small engine control applications. The IC consists of

six integrated low side drivers, three 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 microcontroller

unit (MCU) VCC supply, and one 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 six low side drivers are intended for driving two fuel

injectors, a lamp, two relays or other loads, and a tachometer. The pre-

drivers are intended to drive IGBT or MOSFET transistors to control

ignition coils, and a HEGO heater. The device is packaged in a 48 pin

LQFP-EP with an exposed pad.

Features:

• Operates over supply voltage range of 4.5 V



PWR



36 V

• Logic stability guaranteed down to 2.5 V

• Two fuel injector drivers - typical of 1.3 A each

• Two Ignition IGBT or general purpose gate pre-drivers

• 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 an LED

• V

PROT

protected sensor supply tracks V

+5.0 V regulator

• MCU reset generator - system integrity monitor (watchdog)

• V

pre-regulator provides power for V

and V

PROT

regulators

• Independent fault protection with all faults reported via the SPI

• ISO 9141 K-line interface for communicating diagnostic messages

• Start-up / shut-down control and power sequence logic

• Interfaces directly to MCU using a 5.0 V SPI and logic I/O

• Differential / single-ended VRS conditioning circuit with auto/manual

selected thresholds and filter times with digital and tachometer outputs

BAT

Keyswitch

33814

TWO CYLINDER SMALL ENGINE

CONTROL IC

98ASA00173D

AE SUFFIX (PB-FREE)

48-PIN LQFP-EP

Applications

Small Engine Control for:

• Lawn Mowers

• Motor Scooters

• Small Motorcycles

• Lawn Trimmers

• Snow Blowers

• Chain Saws

• Gasoline-driven Electrical Generators

• Outboard Motors

MC33814

KEYSW VPROT ROUT2

VPWR

LAMPOUT

ROUT1

TACHOUT

VPPREF

O2HFB

VPPSENS

O2HOUT

VCC

O2HSENSP

RESETB

O2HSENSN

BAT

MIL

5.0 V Sensor Supply

Relay 2

(Power)

Relay 1

(Fuel Pump)

TACHOMETER

MCU

O2 Heater

+5.0 V

RESETB

SPI

GPIO

SPI

MRX

MTX

BATSW

RIN1

RIN2

IGNIN1

IGNIN2

INJIN1

INJIN2

VRSOUT

O2HIN

VRSP

VRSN

GND

BAT

INJOUT1

Injectors

INJOUT2

ISO9141

IGNFB1

IGNOUT1

IGNFB2

IGNOUT2

IGNSENSP

IGNSENSN

ISO9141

BAT

Crankshaft VRS

Figure 1. 33814 Simplified Application Diagram

*This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

Table of Contents

Orderable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Internal Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Pin Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1 Pinout Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.2 Pin Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.1 Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.2 Static Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.3 Dynamic Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.4 Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.5 Typical Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

General IC Functional Description and Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.1 Functional Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.2 MCU SPI Interface Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.3 Functional Device Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

7.1 Package Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

33814

Analog Integrated Circuit Device Data

Freescale Semiconductor

PC33814AE Related Products

	PC33814AE	33814	MC33814
Description	Two Cylinder Small Engine Control IC	Two Cylinder Small Engine Control IC	Two Cylinder Small Engine Control IC

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