r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 164

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
Rev. 1.00 Sep. 19, 2008 Page 136 of 1270
REJ09B0466-0100
Figure 5.4 Flowchart of Procedure Up to Interrupt Acceptance
Level 7 interrupt?
Mask level 6
or below?
Yes
Yes
in Interrupt Control Mode 2
No
No
Yes
Branch to interrupt handling routine
Program execution status
Save PC, CCR, and EXR
Read vector address
Interrupt generated?
Update mask level
Level 6 interrupt?
Clear T bit to 0
Mask level 5
or below?
NMI
Yes
Yes
Yes
No
No
No
No
Level 1 interrupt?
Mask level 0?
pending
Hold
Yes
Yes
No
No