HD6473032F Datasheet, PDF (112/572 Pages) Hitachi Semiconductor – Hitachi Microcomputer

Interrupt accepted
Interrupt level
decision and wait Instruction Internal
for end of instruction prefetch processing
Stack
Vector fetch
Prefetch of
interrupt
Internal service routine
processing instruction
ø
Interrupt
request
signal
A₁₉ to A₀
Internal
read signal
Internal
write signal
On-chip
data
(1)
(3)
High
(2)
(4)
(5)
(7)
(9)
(11)
(6)
(8)
(10)
(12)
(13)
(14)
(1) Instruction prefetch address (not executed;
return address, same as PC contents)
(2), (4) Instruction code (not executed)
(3) Instruction prefetch address (not executed)
(5) SP – 2
(7) SP – 4
(6), (8) PC and CCR saved to stack
(9), (11) Vector address
(10), (12) Starting address of interrupt service routine (contents of
vector address)
(13)
Starting address of interrupt service routine; (13) = (10), (12)
(14)
First instruction of interrupt service routine
Note: Mode 1, with program code and stack in on-chip memory area.