ICP DAS USA I-7088 User Manual

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ICP DAS USA I-7088 User Manual Manual pdf 5 page image

I-7088 and M-7088 User Manual, Rev: A1.2 7MH-026-A12 51. IntroductionThe I-7088 has 8 PWM output channels and 8 counter inputs andcan be used to develop powerful and cost effective analog controlsystems. PWM (Pulse Width Modulation) is a powerful technique forcontrolling analog circuits that uses digital outputs to generate awaveform with a variable Duty Cycle (the fraction of time that asystem is in an "active" state) and frequency to control analogcircuits, and can be used to control the position/speed of motors,control the brightness of lamps, or control the speed of fans, etc.The I-7088 will also automatically save the counter value toEEPROM if the power supply is interrupted or lost. Refer to Section1.7 for details.Features Automatic hardware generation of PWM outputs without the needfor software intervention. 1Hz ~ 500KHz PWM output frequency with 0.1%~99.9% dutycycle (Refer to Section 4.2). Software and hardware trigger mode for PWM output. Individual and synchronous PWM output. By using softwaretrigger mode, you can set the configuration for all PWM channelsthen trigger them either individually or all at the same time. Burst mode PWM operation for standby. DI channel can be configured as either a simple digital inputchannel or a hardware trigger source for the PWM output.Software TriggerPWM (Continuous Mode)I-7088MCUDI / Hardware TriggerPWM (Burst Mode)