i want to generate a single trigger pulse with 5MHz Frequency from STM32F4. the meaning of single trigger here is just a one squared-pulse that it can produced by pressed the push button on STM32F4. thank you ^^

[Tesla DeLorean]

What does that even mean in this context? A 5 MHz frequency infers recurrence, are you just looking for a 100ns wide high pulse? Draw a diagram of the expected input and output wave forms and attach as a picture.

[SSade]

yes its exactly as you said, i only looking or a 100ns wide high pulse, and i can produce it again after 20x Period / 10X period / 100x period

[SSade]

yes its exactly like you said, i want to 100ns wide high pulse, and i can produce it again after 20 Period