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33814 PDF 데이터시트 ( Data , Function )

부품번호 33814 기능
기능 Two Cylinder Small Engine Control IC
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33814 데이터시트, 핀배열, 회로
Freescale Semiconductor
Product Preview
Document Number: MC33814
Rev. 1.0, 8/2012
Two Cylinder Small Engine
Control IC
33814
The 33814 is an engine control analog power IC intended for two cylinder
motorcycle and other small engine control applications. The IC consists of
TWO CYLINDER SMALL ENGINE
CONTROL IC
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 VPWR 36 V
• Logic stability guaranteed down to 2.5 V
98ASA00173D
AE SUFFIX (PB-FREE)
48-PIN LQFP-EP
• Two fuel injector drivers - typical of 1.3 A each
Applications
• 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
• VPROT protected sensor supply tracks VCC +5.0 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 the SPI
• ISO 9141 K-line interface for communicating diagnostic messages
Small Engine Control for:
• Lawn Mowers
• Motor Scooters
• Small Motorcycles
• Lawn Trimmers
• Snow Blowers
• Chain Saws
• Gasoline-driven Electrical Generators
• Outboard Motors
• 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
.
VBAT
Keyswitch
VBAT
MC33814
KEYSW
VPWR
VPROT ROUT2
LAMPOUT
VBAT
MIL
5.0 V Sensor Supply
Relay 2
(Power)
MCU
VCC
+5.0 V
RESETB
VPPREF
VPPSENS
VCC
RESETB
ROUT1
TACHOUT
O2HFB
O2HOUT
O2HSENSP
O2HSENSN
TACHOMETER
Relay 1
(Fuel Pump)
O2 Heater
SPI
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
4
Crankshaft VRS
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
Injectors
VBAT
ISO9141
VBAT
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.
© Freescale Semiconductor, Inc., 2012. All rights reserved.




33814 pdf, 반도체, 판매, 대치품
2 Internal Block Diagram
VPWR
VPPREF
VPPSENS
CSB
SI
SCLK
SO
O2HIN
INJIN1
INJIN2
IGNIN1
IGNIN2
RIN1
RIN2
MRX
MTX
KEYSW
BATSW
VRSP
VRSN
VCC VCC
Pre-
Regulator
LOGIC CONTROL
SPI INTERFACE
& REGISTERS
POR,
Over-voltage
Under-voltage
Watchdog
VPP
+5.0 V
Tracking
Regulator
+5.0 V
Regulator
Typical of all 6 Driver Outputs
PARALLEL
CONTROL
Gate Control
Current Limit
Temperature Limit
Short/Open
(1 of 6 shown)
SPI Control
Parallel Control
VPWR
VClamp
lLimit
+
RS
V10.0 Analog
V2.5 Logic
VAnalog
VLogic
RESETB
VPROT
VCC
75 µA
INJOUT1
INJOUT2
ROUT1
ROUT2
LAMPOUT
TACHOUT
INJGND1
INJGND2
RGND1
RGND2
VCC
ISO9141
CONTROLLER
START LOGIC
SLEEP/RUN
To ROUT2
Driver
Bandgap
Bias
Oscillator
VCC
(SPI CONTROL)
VRS CIRCUIT
Divider
Divide by “N”
N=1-32
(SPI)
Pre-drivers
Ignition 1
To Logic
Control
Ignition 2
lLimit +
O2 Heater
To Logic
Control
lLimit
+
To TACHOUT Driver
ISO9141
IGNFB1
IGNOUT1
IGNFB2
IGNOUT2
IGNSENSP
IGNSENSN
O2HFB
O2HOUT
O2HSENSP
O2HSENSN
Note: All current sinks and sources ~50µA except where indicated
GND
Figure 2. Simplified Internal Block Diagram
VRSOUT
Analog Integrated Circuit Device Data
Freescale Semiconductor
33814
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33814 전자부품, 판매, 대치품
Table 2. 33814 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 20.
Pin
Pin Name
Pin
Function
Formal Name
Description
29
BATSW
Output
Battery Switch This output is a 5.0 V logic level that is high when KEYSW is high. It is only
low when KEYSW is low. It can also be controlled via the SPI. The BATSW
output may not be present in a different package but it’s function can be read
by the SPI.
30 INJIN2 Input Injector Driver Input 2 5.0 V logic level input from the MCU to control the injector 2 driver output.
(Can also be controlled via the SPI)
31 INJIN1 Input Injector Driver Input 1 5.0 V logic level input from the MCU to control the injector 1 driver output.
(Can also be controlled via the SPI)
32 IGNIN2 Input Ignition Input 2 5.0 V logic level input from MCU controlling the ignition coil # 2 current flow
and spark. (Can also be controlled via the SPI)
33 IGNIN1 Input Ignition Input 1 5.0 V logic level input from MCU controlling the ignition coil # 1 current flow
and spark. (Can also be controlled via the SPI)
34
O2HIN
Input
O2 Sensor Heater 5.0 V logic level input used to turn on and off the O2HOUT driver. The
Input
O2HOUT driver can also be turned on and off via the SPI if this pin is not
present in a different package.
35
RIN2
Input
Relay Driver Input 2 5.0 V logic level input from the MCU to control the relay 2 driver output
ROUT2. The ROUT2 driver can also be turned on and off via the SPI if this
pin is not present in a different package.
36
RIN1
Input
Relay Driver Input 1 5.0 V logic level input from the MCU to control the relay 1 driver output
ROUT1. The ROUT1 driver can also be turned on and off via the SPI if this
pin is not present in a different package.
37
KEYSW
Input
Key Switch Input The Key Switch Input is a VPWR level signal that indicates that the Key is
inserted and turned to the ON/OFF position. In the ON position the
(KEYSW = VBAT) the IC is enabled and BATSW = HIGH (Relay 2 ON if
programmed in the SPI). In the OFF position the IC is in Sleep mode, only
when the PWREN bit in the SPI register is also low.
38
INJGND2
Ground
Injector Driver 2 Ground connection for injector 2 low side driver. Must be tied to VPWR
Ground
ground.
39
INJOUT2
Output
Injector Driver 2 Low side driver output for injector 2 driven by the SPI input or by parallel input
Output
INJIN2
40
RGND1
Ground
ROUT1 Power Ground connection for ROUT 1 low side driver. Must be tied to VPWR ground.
Ground
41
ROUT1
Output Relay Driver 1 Output Low side relay driver output # 1 driven by the SPI input command or RIN1
logic input
42
INJGND1
Ground
Injector Driver 1 Ground connection for injector 1 low side driver. Must be tied to VPWR
Ground
ground.
43
INJOUT1
Output
Injector Driver 1 Low side driver output for injector 1 driven by the SPI input or by parallel input
Output
INJIN1
44 ISO9141 Input/Output ISO9141 K-Line ISO9141 pin is VPWR level IN/OUT signal which is connected to an external
Bidirectional Serial ECU tester that uses the ISO9141 protocol.The output is open drain and the
Data Signal
Input is a ratiometric VPWR level threshold comparator.
45
IGNFB1
Input
Feedback from Voltage feedback from collector of ignition # 1 driver IGBT through 10:1
Collector 1
voltage divider (9R:1R)
46
IGNOUT1
Output
Ignition Output 1 Output to gate of IGBT or GPGD for ignition # 1
47
IGNFB2
Input
Feedback from Voltage feedback from collector of ignition # 2 driver IGBT through 10:1
Collector 2
voltage divider (9R:1R)
48
IGNOUT2
Output
Ignition Output 2 Output to gate of IGBT or GPGD for ignition # 2
Analog Integrated Circuit Device Data
Freescale Semiconductor
33814
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