HD404324 데이터 시트보기 (PDF) - Renesas Electronics

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HD404324

4-bit HMCS400-series microcomputer

Renesas Electronics 

HD404328 Series

MCU operation

cycle

Yes

IF = 1?

No

Instruction execution

No

IM = 0, 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 17 MCU Operating Sequence (MCU Operation Cycle)

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