CY545 Stepper System Controller
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CHAPTER 1 - INTRODUCTION TO THE CY545
CY545 Stepper System Controller
In 1979 Cybernetic Micro Systems invented the first Single Chip Stepper Motor Controller, the
CY500. Since then we have continued to design improved versions, the CY512 (1981), the
CY525 (1983). This manual introduces our (1988) fourth generation device, the CY545
Stepper System Controller. A fifth generation device (1993) the CY550 is also available. The
CY545 is the first Stepper Motor System Controller chip, to offer completely new features,
such as:
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27,000 Steps/Sec
Million step motions
Serial or Parallel interface
LED display interface
LCD display interface
Thumbwheel switch interface
We believe this device offers all of the features you want to implement sophisticated motion
control systems at very low cost.
For example, our CY500, CY512 and CY525 controllers work best in systems with a host
computer that issues single commands, or sequences of commands as a program, to the
controller, and then tends to other system functions while the Stepper Motor Controller is
running the motor. Maximum performance is gained when the host CPU is closely coupled to
the Stepper Motor Controller IC.
While the CY545 is also capable of working with a host CPU in a closely coupled fashion, the
CY545 contains extensions that allow it to function very well in a stand-alone system. In fact, it
is possible to base a simple controller design around the CY545, and operate a machine with no
CPU at all, bringing the benefits of intelligent, programmable stepper motor control to
applications that do not justify a host computer system.
Basic Features
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Single 40 pin 5 volt CMOS integrated circuit
Simple ASCII letter based commands and parameters
Simple application for basic stepper motor functions
Operation with a host computer or stand alone
Built-in Display interfaces for alpha-numeric LED or LCD
© 2002 Cybernetic Micro Systems
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Chapter 1 - Introduction to the CY545
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