APLICATIONS OF DIGITAL SYSTEMS III

Download: Motor Control Using FPSLIC FPGA

This application note describes the implementation of Pulse Width Modulation (PWM) and Quadrature Decoder/Counter modules for motor control and motor sensor applications.
The on-chip FPGA (up to 40K gates) can be used to implement multiple programmable PWM and Quadrature Decoder modules, allowing designers to implement multiple channels of programmable PWM and Quadrature Decoders. The high performance 8 - bit microcontroller provides up to 3 additional PWM counters that can be configured as 8-, 9- or 10-bit PWM's. The added advantage of the on-chip microcontroller is that it can be used for reading PWMs and Quadrature decoders, and to perform the required processing in determining the motor speed and the distance travelled, providing the single chip solution for most of the motor related applications, see Figure 1.
Typical applications are printers, plotters, Data X-Y Logger, industrial and medical precision equipment, robotics, audio amplifiers, copiers, scanners and many others.



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