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HD404639R Datasheet, PDF (37/135 Pages) Renesas Technology Corp – 4-Bit Single-Chip Microcomputer
Low-power mode
operation cycle
HD404639R Series
IF = 1 and
No
IM = 0?
Yes
Standby/Watch
mode
Stop mode
Hardware NOP
execution
No
IF = 1 and
IM = 0?
Yes
Hardware NOP
execution
No
STOPC = 0?
Yes
RAME = 1
PC ← Next
Iocation
PC ← Next
Iocation
Instruction
execution
Reset MCU
MCU operation
cycle
For IF and IM operation, refer to figure 15.
Figure 22 MCU Operating Sequence (Low-Power Mode Operation)
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