Rising edge vs falling edge trigger

rising edge: when the input signal is transitioning from a low state (e.g. 0) to a high state (e.g. 1) falling edge: when the input signal is transitioning from a high state (e.g. 1) to a low state (e.g. 0) either edge: when the input signal is changing state, from high to low or from low to high.

1. What is the difference between rising edge and falling edge?
2. What is rising edge triggering?
3. How do you trigger a falling edge?
4. Are flip flops rising or falling edge?

What is the difference between rising edge and falling edge?

A rising edge (or positive edge) is the low-to-high transition. A falling edge (or negative edge) is the high-to-low transition.

What is rising edge triggering?

Edge triggering is when the flip-flop state is changed as the rising or falling edge of a clock signal passes through a threshold voltage (figure 7.24). This true dynamic clock input is insensitive to the slope or time spent in the high or low state.

How do you trigger a falling edge?

When triggering on a Falling edge, the signal must cross the arming level (blue) and the firing level (red) in an downward direction. When one of the levels is not crossed, no trigger occurs.

Are flip flops rising or falling edge?

It is said to trigger on the edge of the clock pulse, and thus is called an edge-triggered flip-flop. The flip-flop can be triggered by a raising edge (0->1, or positive edge trigger) or falling edge (1->0, or negative edge trigger). All flip-flops in this text will be positive edge trigger.