PC33991

Freescale Semiconductor, Inc. MOTOROLA SEMICONDUCTOR TECHNICAL DATA Document order number: MC33991/D Rev. 0, 10/2002 Preliminary Information Gauge Driver Integrated Circuit The 33991device is a single packaged, Serial Peripheral Interface (SPI) controlled, dual stepper 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 2-phase instrumentation stepper motor, similar to an MMT licensed AFIC 6405. 33991 Freescale Semiconductor, Inc... The device has many attractive features including: PR EL IM MMT-licensed two-phase stepper 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 3 40° maximum pointer sweep Linear 4500° 2 Max pointer velocity of 400° Analog micro stepping (12 steps/degree of pointer movement) Pointer calibration and return to zero SPI controlled 16-bit word Calibratable Internal Clock Low Sleep mode current IN A DW SUFFIX PLASTIC PACKAGE CASE 751E-04 SOICW This device is ideal for use in automotive instrumentation systems requiring distributed and flexible stepper motor gauge driving. The device also eases the transition to stepper motors from air core motors by emulati...