MCZ33976

www.DataSheet4U.com Freescale Semiconductor Technical Data Document Number: MC33976 Rev. 3.0, 8/2006 Dual Gauge Driver with Configurable Response Time The 33976 is a single-packaged, Serial Peripheral Interface (SPI) controlled, dual step motor gauge driver integrated circuit (IC). This monolithic IC consists of four dual output H-Bridge coil drivers and the associated control logic. Each pair of H-Bridge drivers is used to automatically control the speed, direction, and magnitude of current through the two coils of a two-phase instrumentation step motor, similar to an MMT-licensed AFIC 6405 or Switec MS-X15.xxx motor. The 33976 is ideal for use in automotive instrumentation systems requiring distributed and flexible step motor gauge driving. The device also eases the transition to step motors from air core motors by emulating the air core pointer movement with little additional processor bandwidth utilization. Features MMT-Licensed Two-Phase Step Motor Compatible Switec MS-X15.xxx Step Motor Compatible Minimal Processor Overhead Required Fully Integrated Pointer Movement and Position State Machine with Channel-Independent Configurable Pointer Movement 4096 Possible Steady State Pointer Positions 340° Maximum Pointer Sweep Maximum Acceleration of Maximum Pointer Velocity of 400°/s Analog Microstepping (12 Steps/Degree of Pointer Movement) Pointer Calibration and Return to Zero (RTZ) SPI-Controlled 16-Bit Word Calibratable Internal Clock Low Sleep Mode Current ...