HD404818 Datasheet, PDF (36/100 Pages) Hitachi Semiconductor – 16-digit LCD driver

HD404818 Series
MCU operation
cycle
IF = 1 ?
No
Instruction
execution
Yes
No
IM = 0 and
IE = 1 ?
Yes
Yes SBY/STOP
instruction ?
No
Low-power mode
operation cycle
PC ← next
location
IE ← 0
Stack ← (PC),
(CA),
(ST)
PC ← vector
address
IF: Interrupt request flag
IM: Interrupt mask
IE: Interrupt enable flag
PC: Program counter
CA: Carry flag
ST: Status flag
Figure 16 MCU Operating Sequence (MCU operation cycle)
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