Interrupt Response Time - Hitachi H8/3637 Hardware Manual

3.3.6

Interrupt Response Time

Table 3.4 shows the number of wait states after an interrupt request flag is set until the first
instruction of the interrupt handler is executed.
Table 3.4 Interrupt Wait States
Item
Waiting time for completion of executing instruction*
Saving of PC and CCR to stack
Vector fetch
Instruction fetch
Internal processing
Note: * Not including EEPMOV instruction.
States Total
1 to 13 15 to 27
4
2
4
4
75