AN1712发动的催分辨率正弦波用的ST7 PWMART

AN1712发动的催分辨率正弦波用的ST7 PWMART

AN1712
APPLICATION NOTE
GENERATING A HIGH RESOLUTION
SINEWAVE USING ST7 PWMART
By Microcontroller Division Applications


INTRODUCTION
The purpose of this application note is to present a software technique for generating a high
resolution sinewave using ST7 PWMART, tunable in frequency and average amplitude. This
application has been implemented using the ST72321J9 microcontroller. The PWMART (Au-
toreload timer peripheral embedded in the microcontroller) is used to generate a PWM signal
and this PWM signal is then filtered by low pass fil