HD6417750RF240V Datasheet, PDF (524/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 20 Power-Down Modes
Reset state
STBY pin = High
RES pin = Low
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
SLEEP
command
External
interrupt^*
Program-halted state
STBY pin = Low
Hardware
standby mode
SSBY = 0
Sleep mode
(main clock)
SSBY = 1
Software
standby mode
: Transition after exception processing
: Low power dissipation mode
Notes: 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.
* NMI and IRQ0 to IRQ5
Figure 20.1 Mode Transition Diagram
Rev. 7.00 Sep. 11, 2009 Page 488 of 566
REJ09B0211-0700