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| E202075_HD404889 Datasheet, PDF (46/202 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit | |||
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HD404889/HD404899/HD404878/HD404868 Series
Power ON
RESET="0"?
Yes
No
Yes
Interrupt request?
No
Reset MCU
Execute instruction
PCâ(PC)+1
IE="1"?
Yes
Accept interrupt
IEâ"0"
Stackâ(PC)
Stackâ(CA)
Stackâ(ST)
PCâ$0002
PCâ$0004
PCâ$0006
PCâ$0008
Yes
WU0~WU3
interrupt?
No
Yes
INT0
interrupt?
No
Yes
INT1
interrupt?
No
Yes
Timer A interrupt?
PCâ$000A
PCâ$000C
No
Yes
Timer B, timer D
interrupt?
No
Yes
Timer C interrupt?
PCâ$000E
No
(A/D, serial interrupt)
Figure 11 Interrupt Handling Flowchart
44
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