33976 - Dual Gauge Driver

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33976 기능

기능

Dual Gauge Driver

제조업체

Freescale Semiconductor

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Advance Information

Document Number: MC33976

Rev 4.0, 1/2007

Dual Gauge Driver with

Configurable Response Time

33976

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 4500°/s2

•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

•Pb-Free Packaging Designated by Suffix Code EG

CONFIGURABLE DUAL GAUGE DRIVER

DW SUFFIX

EG SUFFIX (PB-FREE)

98ASB42344B

24-PIN SOICW

ORDERING INFORMATION

Device

Temperature

Range (TA)

Package

MC33976DW/R2

MCZ33976EG/R2

-40°C to 125°C

24 SOICW

VPWR

5.0 V

VDD

Regulator

MCU

33976

VPWD

VDD

SIN0+

SIN0-

COS0+

COS0-

RTZ SIN1+

RST SIN1-

SCLK

COS1+

COS1-

GND

Motor 0

Motor 1

Figure 1. 33976 Simplified Application Diagram

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

ELECTRICAL CHARACTERISTICS

MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

MAXIMUM RATINGS

Table 2. Maximum Ratings

All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or

permanent damage to the device.

Rating

Symbol

Value

Unit

Power Supply Voltage

Steady State

Input Pin Voltage (1)

SIN+/- COS+/- Continuous Per Output Current (2)

Storage Temperature

Operating Junction Temperature

Thermal Resistance

Junction to Ambient

Junction to Lead

ESD Voltage (3)

Human Body Model

Machine Model

Peak Package Reflow Temperature During Reflow (4), (5)

VPWR(SUS)

VIN

IOUTMAX

TSTG

RθJA

RθJL

VESD1

VESD2

TPPRT

-0.3 to 41

-0.3 to 7.0

-55 to 150

-40 to 150

±2000

±200

Note 5

°C

°C/W

°C

Notes

1. Exceeding voltage limits on Input pins may cause permanent damage to the device.

2. Output continuous output rating so long as maximum junction temperature is not exceeded. Operation at 125°C ambient temperature will

require maximum output current computation using package thermal resistances.

3. ESD1 testing is performed in accordance with the Human Body Model (CZAP = 100 pF, RZAP = 1500 Ω), ESD2 testing is performed in

accordance with the Machine Model (CZAP = 200 pF, RZAP = 0 Ω).

4. Pin soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may

cause malfunction or permanent damage to the device.

5. Freescale’s Package Reflow capability meets Pb-free requirements for JEDEC standard J-STD-020C. For Peak Package Reflow

Temperature and Moisture Sensitivity Levels (MSL),

Go to www.freescale.com, search by part number [e.g. remove prefixes/suffixes and enter the core ID to view all orderable parts. (i.e.

MC33xxxD enter 33xxx), and review parametrics.

33976

Analog Integrated Circuit Device Data

Freescale Semiconductor

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ELECTRICAL CHARACTERISTICS

DYNAMIC ELECTRICAL CHARACTERISTICS

Table 4. Dynamic Electrical Characteristics

Characteristics noted under conditions 4.75 V ≤ VDD ≤ 5.25 V, -40°C ≤ TJ ≤ 150°C, GND = 0 V unless otherwise noted.

Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Units

POWER OUTPUT AND CLOCK TIMINGS

SIN0,1, ± (COS0,1, ±) Output Turn ON Delay Time

(Time from Rising CS Enabling

Outputs to Steady State Coil Voltages and Currents) (15)

tDLY (ON)

1.0

––

SIN0,1, ± (COS0,1, ±) Output Turn OFF Delay Time (Time from Rising CS

Disables Outputs to Steady State Coil Voltages and Currents) (15)

tDLY (OFF)

–

– 1.0

Uncalibrated Oscillator Cycle Time

tCLU

0.65

1.0

1.7

µs

Calibrated Oscillator Cycle Time

Calibration Pulse = 8.0 µs, PECCR D4 = Logic [0]

Calibration Pulse = 8.0 µs, PECCR D4 = Logic [1]

tCLC

1.0 1.1

0.9 1.0

1.2

1.1

µs

Maximum Pointer Speed (16)

Maximum Pointer Acceleration (16)

VMAX

A MAX

–

– 400

°/s

– 4500 °/s2

Notes

15. Maximum specified time for the 33976 is the minimum guaranteed time needed from the microcontroller.

16. The minimum and maximum value will vary proportionally to the internal clock tolerance. These numbers are based on an ideally

calibrated clock frequency of 1.0 MHz. These are not 100 percent tested.

Analog Integrated Circuit Device Data

Freescale Semiconductor

33976

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