HD404818 Datasheet, PDF (24/100 Pages) Hitachi Semiconductor – 16-digit LCD driver

HD404818 Series
Power
on
No
RESET = 1 ?
Yes
Reset MCU
Interrupt Yes
request ?
No
Execute instruction
No
IE = 1?
Yes
Accept interrupt
PC ^←(PC) + 1
IE ←0
Stack ← (PC)
Stack ← (CA)
Stack ^← (ST)
PC^← $0002
PC^← $0004
PC^← $0006
PC^← $0008
Yes
INT₀
interrupt ?
No
Yes
INT₁
interrupt ?
No
Yes Timer A
interrupt ?
No
Yes Timer B
interrupt ?
PC^← $000A
No
Yes Timer C
interrupt ?
No
PC^←$000C
(serial interrupt)
Figure 8 Interrupt Processing Flowchart
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