HD6432621 Hitachi, HD6432621 Datasheet - Page 158

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

114
Figure 5-6 Flowchart of Procedure Up to Interrupt Acceptance in
Level 7 interrupt?
Mask level 6
or below?
Yes
Yes
No
No
Yes
Branch to interrupt handling routine
Interrupt Control Mode 2
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?
Hold pending
Yes
Yes
No
No