MC33970

www.DataSheet4U.com Freescale Semiconductor Advance Information Document Number: MC33970 Rev. 3.0, 1/2007 Dual Gauge Driver Integrated Circuit with Improved Damping Algorithms This 33970 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. The 33970 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 33970 IMPROVED GAUGE DRIVER INTEGRATED CIRCUIT DW SUFFIX EG SUFFIX (Pb-FREE) 98ASB42344B 24-PIN SOICW ORDERING INFORMATION MMT-Licensed Two-Phase Step Motor Compatible Temperature Device Package Minimal Processor Overhead Required Range (TA) Fully Integrated Pointer Movement and Position State Machine MC33970DW/R2 with Air Core Movement Emulation -40°C to 125°C 24 SOICW 4096 Possible Steady State Pointer Positions MCZ33970EG/R2 340° Maximum Pointer Sweep Fixed Maximum Acceleration and Deceleration of 4500°/s2 Maximum Pointer Velocity of 400°...