ADuC8xx interrupt latencies ?

Question

I briefly checked the datasheet(s) but haven't really found concrete numbers on the ADuC8xx interrupt latencies. Specifically ADuC814 @ 16.78 MHz and ADuC841 @ 20 MHz. How much time (or cycles) need those from the interrupt signal to the first ISR opcode ?

Karl.O · Accepted Answer

For the ADuC814, the machine cycle consists of 12 core clock periods of the selected core operating frequency. While ADuC841 consists of 1 core clock period. 
 ADuC814 @ 16.78MHz - single cycle is around 715ns. ADuC841 @ 20MHz - single cycle is around 50ns. 
 The interrupts flags are detected in the next machine cycle, and the ISR call takes two cycles. A minimum of three machine cycles elapses from the activation of the interrupt to the beginning of the ISR. 
 ADuC814, 3 machine cycle - 2.15us. ADuC841, 3 machine cycle - 0.15us.

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ADuC8xx interrupt latencies ?

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