SG187 Motorola / Freescale Semiconductor, SG187 Datasheet - Page 29

• Manufacturer Part Number: SG187
• Description: Automotive Selector Guide 2Q, 2001
• Manufacturer: Motorola / Freescale Semiconductor

** The 68HC912D60 or 68HC912D128
* Contact sales
may also be used in this application.
Electric Power Assist
Main MCU
Fail-safe MCU
H-bridge driver
STEERING
INDICATOR
POSITION
VEHICLE
SENSOR
TORQUE
SYSTEM
SENSOR
ENGINE
POWER
WHEEL
SPEED
SPEED
FAULT
Device Application
68HC05 Family
REGULATORS
& CAN HS P/I
PC33989DW
BASIS CHIP
CONDITIONING
VOLTAGE
SYSTEM
SENSOR*
SIGNAL
Electric Power Assist Steering System Example
XC68HC912BC32 32K ROM, 1K RAM, 768 bytes EEPROM, CAN 2.0a/b, 80 QFP packaging option
PC68HC08AZ32A 32K ROM, 1K RAM, 512 bytes EEPROM, CAN 2.0a/b, 64 QFP packaging option
MC33253
Suggested
Device
MICROCONTROLLER
MICROCONTROLLER
68HC912BC32**
68HC08AZ32A
FAIL-SAFE
MAIN
Full bridge pre-driver, 1A pulse current, global enable, SO20 packaging
CONTROL PACKAGE
FAIL-SAFE*
SWITCH
Device Highlights
CLUTCH*
DRIVE
PRE-DRIVER
H-BRIDGE
MC33253
VERIFICATION
CURRENT*
FAIL-SAFE
CLUTCH
MOTOR
DC