Hi Burak, [quote userid="508489" url="~/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1074363/tms320f280049-q1-input-pulse-width-5ns"]1) Am I right?[/quote] Correct. [quote userid="508489" url="~/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1074363/tms320f280049-q1-input-pulse-width-5ns"]Here it shows the minimum input pulse width as 110ns. 2) So when there is a 5ns pulse to its input, will the TMS320F28004x ignore this pulse? Can't detect it?[/quote] Correct. In HR mode, any pulses less than minimum requirement of 110ns will not be properly detected by the ECAP. [quote userid="508489" url="~/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1074363/tms320f280049-q1-input-pulse-width-5ns"]3) I want to measure the width of a 5ns pulse. What do you recommend?[/quote] Unfortunately 5ns is too short even in regular ECAP mode which has a minimum requirement of 20ns on this device.
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