HD6432633 Datasheet, PDF (1040/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

Reset state
STBY pin = High
RES pin = Low
Program-halted state
STBY pin = Low
Hardware
standby mode
Program execution state
RES pin = High
High-speed mode
(main clock)
SCK2 to
SCK0 = 0
SCK2 to
SCK0 ≠ 0
Medium-speed
mode
(main clock)
SLEEP command
Any interrupt *¹
SLEEP
command
External
interrupt *²
SSBY = 0
Sleep mode
(main clock)
SSBY = 1, PSS = 0
Software
standby mode
: Transition after exception processing
: Low power dissipation mode
Notes: *1 All interrupts
*2 NMI and IRQ0 to IRQ7
• When a transition is made between modes by means of an interrupt, the transition cannot be made
on interrupt source generation alone. Ensure that interrupt handling is performed after accepting the
interrupt request.
• From any state except hardware standby mode, a transition to the reset state occurs when RES is
driven Low.
• From any state, a transition to hardware standby mode occurs when STBY is driven low.
Figure 24-1(b) Mode Transition Diagram (H8S/2695)
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