Transcription of Implementing IIR Digital Filters
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Implementing IIR Digital Filters
1997 Microchip Technology 1 INTRODUCTION This application note describes the implementation ofvarious Digital Filters using the PIC17C42, the firstmember of Microchip s 2nd generation of 8-bitmicrocontrollers. The PIC17C42 is a very high speed8-bit microcontroller with an instruction cycle time of250 ns (@ 16 MHz input clock). Even though thePIC17C42 is an 8-bit device, it s high speed and effi-cient instruction set allows implementation of Digital fil-ters for practical applications. Traditionally Digital filtershave been implemented using expensive Digital SignalProcessors (DSPs). In a system the DSP is normally aslave processor being controlled by either an 8-bit or16-bit microcontroller. Where sampling rates are nothigh (especially in mechanical control systems), a sin-gle chip solution is possible using the PIC17C42. This application note provides a few examples of imple-menting Digital Filters .
1997 Microchip Technology Inc. DS00540C-page 1 INTRODUCTION This application note describes the implementation of various digital filters using the PIC17C42, the first
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