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NXP Semiconductors Electronic Components Datasheet

MC33814 Datasheet

Two cylinder small engine controller

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NXP Semiconductors
Data sheet: Technical Data
Document Number: MC33814
Rev. 11.1, 5/2018
Two cylinder small engine control IC
Powered by SMARTMOS technology, the 33814 delivers a cost-optimized IC
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.
Features:
• Operates over supply voltage range of 4.5 V < VPWR < 36 V
• Start-up/shutdown control and power sequence logic with KEYSW input
• MCU supply: VCC is a 5.0 V (±2.0 %, 200 mA) regulated supply
• Sensor supply: VPROT (100 mA) is a VCC tracking protected sensor supply
• Three 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
a Tachometer display
• Innovative configurable VRS conditioning circuit, with two different parameter
settings for engine cranking and running mode and an optional automatic mode
to improve noise immunity in cranking conditions
• K-line (ISO9141)
• MCU reset generator and programmable watchdog
• MCU Interface: 16-bit SPI and parallel interface with 5.0 V IO capability
.
33814
TWO CYLINDER SMALL ENGINE
CONTROL IC
98ASA00737D
AE SUFFIX (PB-FREE)
48-PIN LQFP-EP
Applications:
Small Engine Control for:
• Motor scooters
• Small motorcycles
• Lawn mowers
• Lawn trimmers
• Snow blowers
• Chain saws
• Gasoline-driven electrical generators
• Outboard motors
VBAT
Keyswitch
VBAT
MCU
VCC
+5.0 V
RESETB
SPI
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
4
Crankshaft VRS
MC33814
KEYSW
VPWR
VPROT ROUT2
LAMPOUT
VPPREF
ROUT1
VPPSENS
TACHOUT
O2HFB
VCC
O2HOUT
O2HSENSP
RESETB
O2HSENSN
SPI
MRX
MTX
BATSW
RIN1
RIN2
IGNIN1
IGNIN2
INJIN1
INJIN2
VRSOUT
O2HIN
VRSP
VRSN
GND
INJOUT1
INJOUT2
ISO9141
IGNFB1
IGNOUT1
IGNFB2
IGNOUT2
IGNSENSP
IGNSENSN
VBAT
MIL
TACHOMETER
5.0 V Sensor Supply
Relay 2
(Power)
Relay 1
(Fuel Pump)
O2 Heater
VBAT
Injectors
VBAT
ISO9141
VBAT
Figure 1. 33814 simplified application diagram
© NXP B.V. 2018.


NXP Semiconductors Electronic Components Datasheet

MC33814 Datasheet

Two cylinder small engine controller

No Preview Available !

Table of Contents
1 Orderable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Internal block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Pinout diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 General product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Static electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Dynamic electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5 General IC functional description and application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1 System controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2 Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.3 System reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4 Power supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.5 Drivers blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.6 Pre-driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.7 VRS circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.8 ISO9141 bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.9 Mode code and revision number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.10 SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.11 SPI registers mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6 Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.1 Output OFF open load fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.2 Low voltage operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.3 Low-side injector driver voltage clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.4 Reverse battery protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
7.1 Package mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
33814
2
NXP Semiconductors


Part Number MC33814
Description Two cylinder small engine controller
Maker NXP
PDF Download

MC33814 Datasheet PDF






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