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MC1151A

Advanced Step Motor Control Chipset

PMD 

Product Family Overview

# of axes

Motors Supported

Encoder Format

Output Format

MC1401 series

4, 2, or 1

DC Servo

Incremental (no dash version)

and Parallel ('-P' version)

DC servo

S-curve profiling

Yes

Electronic gearing

Yes

On-the-fly changes

Yes

Limit switches

Yes

PID & feedforward

Yes

PWM output

Yes

DAC-compatible output

Yes

Pulse & direction output

-

Index & Home signal

Yes

Chipset p/n's MC1401A, MC1401A-P (4 axes)

MC1201A, MC1201A-P (2 axes)

MC1101A, MC1101A-P (1 axis)

Developer's Kit p/n's: DK1401A, DK1401A-P

* optional using third I.C. ('-E' version)

MC1231 series

2 or 1

Brushless Servo

Incremental

Sinusoidally

commutated

Yes

Yes

Yes

Yes

Yes

Yes

Yes

-

Yes

MC1231A (2 axes)

MC1131A (1 axis)

DK1231A

MC1241 series

2 or 1

Stepper

Incremental

Microstepping

Yes

Yes

Yes

Yes

-

Yes

Yes

-

Yes

MC1241A (2 axes)

MC1141A (1 axis)

DK1241A

MC1451 series

4, 2, or 1

Stepper

Incremental*

Pulse and Direction

Yes

Yes

Yes

Yes

-

-

-

Yes

Yes

MC1451A, MC1451A-E (4 axes)

MC1251A, MC1251A-E (2 axes)

MC1151A, MC1151A-E (1 axis)

DK1451A

Introduction

Family Summary

This manual describes the operational characteristics of the MC1451A,

MC1251A, MC1151A, MC1451A-E, MC1251A-E, and MC1151A-E

Motion Processors. These devices are members of PMD's 1st

generation motion processor family, which consists of 16 separate

products organized into four groups.

Each of these devices are complete chip-based motion controllers.

They provide trajectory generation and related motion control functions.

Depending on the type of motor controlled they provide servo loop

closure, on-board commutation for brushless motors, and high speed

pulse and direction outputs. Together these products provide a

software-compatible family of dedicated motion processor chips which

can handle a large variety of system configurations.

Each of these chips utilize a similar architecture, consisting of a high-

speed DSP (Digital Signal Processor) computation unit , along with an

ASIC (Application Specific Integrated Circuit). The computation unit

contains special on-board hardware such as a multiply instruction that

makes it well suited for the task of motion control.

Along with a similar hardware architecture these chips also share most

software commands, so that software written for one chipset may be re-

used with another, even though the type of motor may be different.

This manual describes the operation of the MC1451A, MC1251A,

MC1151A, MC1451A-E, MC1251A-E, and MC1151A-E chipsets. For

technical details on other members of PMD's first generation

motion processors see the corresponding product manual.

MC1401 series (MC1401A, MC1201A, MC1101A, MC1401A-P,

MC1201A-P, MC1101A-P) - These chipsets take in incremental

encoder signals (standard version) or parallel word encoder signals

(-P version) and output a motor command in either PWM or DAC-

compatible format. These chipsets come in 1, 2 or 4 axis versions

and can be used with DC brushed motors, or brushless motors using

external commutation.

MC1231 series (MC1231A, MC1131A) - These chipsets take in

incremental quadrature encoder signals and output sinusoidally

commutated motor signals appropriate for driving brushless motors.

They are available in one or two axis versions. Depending on the

motor type they output two or three phased signals per axis in either

PWM or DAC-compatible format.

MC1241 series (MC1241A, MC1141A) - These chipsets provide

internal microstepping generation for stepping motors. They are

available in a one or a two-axis version. Two phased signals are

output per axis in either PWM or DAC-compatible format. An

incremental encoder signal can be input to confirm motor position.

MC1451 series (MC1451A, MC1251A, MC1151A, MC1451A-E,

MC1251A-E, MC1151A-E) - These chipsets provide very high speed

pulse and direction signal output appropriate for driving step motor-

based systems. They are available in a one, two, or four-axis version

and are also available with quadrature encoder input.

Each of these chipsets has an associated Chipset Developer's

Kit available for it. For more information contact your PMD

representative.

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