HD64F2638F20J Datasheet, PDF (177/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 5 Interrupt Controller
Program execution status
Interrupt generated? ^No
Yes
Yes
NMI
No
No
Level 7 interrupt?
Yes
Mask level 6
or below?
Yes
Level 6 interrupt? ^No
No
Yes
Mask level 5
No
or below?
Yes
Level 1 interrupt? ^No
Yes
No
Mask level 0?
Yes
Save PC, CCR, and EXR
Clear T bit to 0
Hold pending
Update mask level
Read vector address
Branch to interrupt handling routine
Figure 5-6 Flowchart of Procedure Up to Interrupt Acceptance in
Interrupt Control Mode 2
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 127 of 1458