MC33970数据手册恩XP中文资料规格书

描述 Description

OverviewThis 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.

MC33970 removed from active portfolio. Possible Replacement Part:None
Archived content is no longer updated and is made available for historical reference only.

特性 Features

•
MMT-Licensed Two-Phase Step Motor Compatible



•
Minimal Processor Overhead Required



•
Fully Integrated Pointer Movement and Position State Machine with Air Core Movement Emulation



•
4096 Possible Steady State Pointer Positions



•
340° Maximum Pointer Sweep



•
Fixed Maximum Acceleration and Deceleration of 4500°/s2



•
Maximum Pointer Velocity of 400°/s



•
Analog Microstepping (12 Steps/Degree of Pointer Movement)



•
Pointer Calibration and Return to Zero



•
SPI-Controlled 16-Bit Word



•
Calibratable Internal Clock



•
Low Sleep Mode Current



•
Backward Compatible with MC33991



•Improved Pointer Movement, Diagnostics, and Return to Zero (RTZ)