Rev.6.00 Oct.28.2004 page 97
of 1016
REJ09B0138-0600H
5.4.4
Interrupt Exception Handling Sequence
Figure 5-7 shows the interrupt exception handling sequence. The example shown is for the case where interrupt control
mode 0 is set in advanced mode, and the program area and stack area are in on-chip memory.
(14)
(12)
(10)
(8)
(6)
(4)
(2)
(1)
(5)
(7)
(9)
(11)
(13)
Interrupt service
routine instruction
prefetch
Internal
operation
Vector fetch
Stack
Instruction
prefetch
Internal
operation
Interrupt
acceptance
Interrupt level determination
Wait for end of instruction
Interrupt
request signal
Internal
address bus
Internal
read signal
Internal
write signal
Internal
data bus
ø
(3)
(1)
(2) (4)
(3)
(5)
(7)
Instruction prefetch address (Not executed.
This is the contents of the saved PC, the return address.)
Instruction code (Not executed.)
Instruction prefetch address (Not executed.)
SP-2
SP-4
Saved PC and saved CCR
Vector address
Interrupt handling routine start address (vector
address contents)
Interrupt handling routine start address ((13) = (10) (12))
First instruction of interrupt handling routine
(6) (8)
(9) (11)
(10) (12)
(13)
(14)
Figure 5-7 Interrupt Exception Handling
Содержание ZTAT H8S/2357F
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