The Microchip PICmicro
®
PIC18 family of microcontrol-
lers are popularly known for their logic and controlling
functions. In addition, these microcontrollers have built-
in hardware multipliers and multiple file pointers. These
features, along with the built-in analog-to-digital con-
verter (ADC), make PIC18 microcontrollers a compe-
tent choice for applications where logic and controlling
functions are combined with signal processing
applications.M AN852
Implementing FIR and IIR Digital Filters
Using PIC18 Microcontrollers
Author: B. K. Anantha Ramu FIR FILTER IMPLEMENTATION
Microchip Technology Designs Equation 1 shows the computation performed by an
(India) Pvt. Ltd. FIR filter.
EQUATION 1: Y[N] COMPUTATION
INTRODUCTION y[n] = x[n]*a0+x[n……