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Motorola : Semiconductors : Product Catalog : Analog : Peripheral and Special Function : Accessory Control : MC33991

Page Contents

Features
Parametrics
Documentation
Development Tools/Boards
Orderable Parts

Other Info

MC33991 : Dual Gauge Driver Integrated Circuit

This Gauge Driver IC is a Serial Peripheral Interface (SPI) controlled, dualstepper motor driver IC. This monolithic IC consists of four dual output H-Bridge coil drivers and their associated control andmanagement logic. Each pair of H-Bridge drivers automatically controls 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.<\p>

A special patent-pending circuit detects motor stall accurately and allows simple end stop detection.

The Gauge Driver IC is ideal for use in instrumentation systems which require distributed and flexible stepper motor gauge driving. The device simplifies the use of stepper motors by including all the logic required to manage the motion of the stepper without requiring significant processor overhead. SPI communications are used to request a motor position and the IC completely manages the acceleration, stepping and deceleration of the motor to arrive correctly at the requested position. Updated requests can be received at any time and the logic correctly acts upon the latest position request. Both motors can be controlled and driven independently.

MC33991 Features

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

340 degrees of potential pointer sweep

Designed for a constant acceleration of 4500 deg/s2

Designed for a maximum pointer velocity of 400 deg/s

Analog microstepping (12 microsteps/deg of pointer movement)

Pointer calibration by return to zero

16 bit word SPI controlled

Calibratable internal clock

Low sleep mode current

Internal regulator to minimize IDD consumption

MC33991 Parametrics

Description (Text)	Package/Style (Text)	Characteristics (Text)	Operating Voltage (Text) (Volts)	Status (Text)
Dual Guage Driver IntegratedCircuit	24 SOICW	4 Dual Output H-Bridge coil drivers, MMT-licensed two phase stepper motor compatible, Analog microstepping (12 steps/deg of pointer movement)	6.2 TO 26 (Nominal)	Samples now

MC33991 Documentation

Brochure

ID	Name	Format	Size K	Rev #	Date Last Modified	Order Availability
APDPAK/D	Analog ICs Portfolio Package	html	0	0	1/31/2002
BR1567/D	Analog ICs Integrated Solutions Technology	pdf	5416	0	1/16/2002
BR1568/D	Analog ICs Integrated Solutions Packaging	pdf	1411	0	1/11/2002
BR1569/D	Analog ICs Integrated Solutions Applications	pdf	2363	0	1/11/2002

Data Sheets

ID	Name	Format	Size K	Rev #	Date Last Modified	Order Availability
MC33991/D	Gauge Driver Integrated Circuit	pdf	435	0	10/16/2002	-

Fact Sheets

ID	Name	Format	Size K	Rev #	Date Last Modified	Order Availability
MC33991FS/D	Analog Products PC33991FS Fact Sheet	pdf	501	0	1/16/2002

Selector Guide

ID	Name	Format	Size K	Rev #	Date Last Modified	Order Availability
SG1002/D	Analog SPS Sales Guide	pdf	869	0	6/27/2002

MC33991 Development Tools/Boards

ID	Name	Vendor ID	Order Availability
KIT33887FCEVB	Evaluation Kit 225mO 150C & Sleep Mode and Current Sense	MOTOROLA	-
KIT33886DHEVB	H-Bridge Integrated Circuit Evaluation Kit	MOTOROLA	-

Orderable Parts Information

PartNumber	Package Info	Life Cycle Description (code)	Remarks	Budgetary Price QTY 1000+ ($US)	Order Availability
MC33991DW	SOW24	PRODUCT INTRODUCTION PENDING(0)	-	$1.56	-
MC33991DWR2	SOW24 T/R	PRODUCT INTRODUCTION PENDING(0)	-	$1.58	-