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Rising Edge

What is a rising edge?

A rising edge is a transition in a digital signal from a low logic level (typically 0V) to a high logic level (typically 3.3V or 5V). It represents the moment when a signal changes state from OFF to ON, often used to trigger events in digital circuits like clocking data into flip-flops or starting timer sequences. Rising edges are fundamental timing references in digital systems and are commonly detected by microcontrollers and logic circuits to synchronize operations.

Related Terms

Falling Edge

A falling edge is the transition of a digital signal from a high voltage level (logic 1) to a low voltage level (logic 0). This downward transition occurs over a brief period of time and is often used to trigger events in digital circuits, such as clocking data into flip-flops or initiating interrupt routines in microcontrollers. The falling edge is the opposite of a rising edge and is also referred to as a negative edge or trailing edge in digital electronics.