Datasheet

Section 5 Interrupt Controller
Rev. 6.00 Mar. 18, 2010 Page 148 of 982
REJ09B0054-0600
Yes
Program execution status
Interrupt generated?
NMI
Level 6 interrupt?
Mask level 5
or below?
Level 7 interrupt?
Mask level 6
or below?
Save PC, CCR, and EXR
Clear T bit to 0
Update mask level
Read vector address
Branch to interrupt handling routine
Hold
pending
Level 1 interrupt?
Mask level 0?
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
No
No
No
No
No
No
Figure 5.6 Flowchart of Procedure Up to Interrupt Acceptance in Control Mode 2
5.5.4 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.