Interrupt Latency is the number of clock cycles the processor takes to respond to an interrupt request. This clock cycle number is count between the interrupt request's assertions and the interrupt handler's first instruction.
Interrupt Latency on the Cortex-M processor family :
Cortex-M processors have very low interrupt latency. The following table shows the Interrupt latency of Cortex-M processors with zero wait state memory systems.
| Processors |
Cycles with zero wait state memory |
| Cortex-M0 |
16 |
| Cortex-M0+ |
15 |
| Cortex-M3 |
12 |
| Cortex-M4 |
12 |
| Cortex-M7 |
12 |
