The iLCD Controllers can control the two relay outputs via two internal separate pulse-width modulation circuits too. This allows driving a speaker or buzzer via relay output 0 to produce a sound like mobile phone's ring tones (use macros to control the sequences of different tone heights and durations). Using a simple R/C filter on any of the two relay outputs can allow the output of a controllable analog voltage as well.
Relay output 1 can use the fixed frequency (1.0 kHz) PWM 1 with variable duty cycle only, relay output 0 can be controlled via PWM 0. The frequency of PWM 0 can be set between 1 Hz and 1 MHz with exception of DPM5050 controller which can be adjusted from 20 Hz to 1 MHz.
Find following commands in this chapter as well as in the category "Input/Output..." when using the parameter completion feature of iLCD Manager XE:
Copyright © demmel products gmbh. All rights reserved.