HD6432646 Hitachi, HD6432646 Datasheet - Page 154

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HD6432646

Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet

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120
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

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