KT33814UG User’s Guide Rev. 2.0 4/2013
4
Freescale Semiconductor
Introduction
4
Introduction
The KIT33814AEEVBE
Evaluation Board is an easy-to-use circuit board that allows the user to exercise
all the functions of the MC33814 two cylinder small engine control IC. A PC communicates to the EVB
through a USB/SPI Dongle (KITUSBSPIDGLEVME) connected to the PC’s USB port. The Freescale
SPIGen (version 7.0) program provides the user interface to the MC33814 SPI port and allows the user
to send commands to the IC and receive status from the IC.
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Evaluation Board Features
This evaluation board consists of a MC33814 two cylinder small engine control IC, a USB to SPI Dongle
interface, and power conditioning circuitry. All +5.0 V V
CC
power required by the board is obtained from
the MC33814 built-in power regulator. A +12 V V
BAT
supply provides the power to the three internal
voltage regulators.
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MC33814 Device Features
The MC33814 is an engine control analog power IC intended for two cylinder motorcycle and other small
engine control applications. The IC supports the following functionality:
•
Operates over supply voltage range of 4.5 V
≤
VPWR
≤
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
CC
+5.0 V regulator
•
MCU reset generator - system integrity monitor (watchdog)
•
VPP pre-regulator provides power for V
CC
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
Freescale analog ICs are manufactured using the SMARTMOS process, a combinational BiCMOS
manufacturing flow that integrates precision analog, power functions and dense CMOS logic together on a
single cost-effective die.
