H8S2268 Datasheet, PDF (620/725 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

Section 22 Power-Down Modes
Reset state
STBY pin = High
RES pin = Low
RES pin = High
Program execution state
High-speed mode
(main clock)
SLEEP instruction
Any interrupt *³
SCK2 to
SCK0= 0
SCK2 to
SCK0 0
SLEEP
instruction
Medium-speed
mode
(main clock)
External
interrupt *⁴
SLEEP
instruction
SLEEP instruction
SSBY = 1, PSS = 1
DTON = 1, LSON = 0
After the oscillation
settling time
(STS2 to 0), clock
switching exception
processing
SLEEP instruction
SSBY = 1, PSS = 1
DTON = 1, LSON = 1
Clock switching
exception processing
Sub-active mode
(subclock)
Interrupt *¹
LSON bit = 0
SLEEP
instruction
Interrupt *¹
LSON bit = 1
SLEEP instruction
Interrupt *²
Program-halted state
STBY pin = Low
Hardware
standby mode
SSBY= 0, LSON= 0
Sleep mode
(main clock)
SSBY= 1,
PSS= 0, LSON= 0
Software
standby mode
SSBY= 1,
PSS= 1, DTON= 0
Watch mode
(subclock)
SSBY= 0,
PSS= 1, LSON= 1
Sub-sleep mode
(subclock)
: 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.
Always select high-speed mode before making a transition to watch mode or sub-active mode.
1. H8S/2268 Group: NMI, IRQ0, IRQ1, IRQ3 to IRQ5, WKP0 to WKP7, WDT1 interrupt, and TMR4
interrupt
H8S/2264 Group: NMI, IRQ0, IRQ1, IRQ3, IRQ4, WKP0 to WKP7, and WDT1 interrupt
2. H8S/2268 Group: NMI, IRQ0, IRQ1, IRQ3 to IRQ5, WKP0 to WKP7, WDT0 interrupt, WDT1 interrupt,
and TMR0 to TMR4 interrupts
H8S/2264 Group: NMI, IRQ0, IRQ1, IRQ3, IRQ4, WKP0 to WKP7, WDT0 interrupt, WDT1 interrupt,
TMR0 interrupt, and TMR1 interrupt
3. All interrupts
4. H8S/2268 Group: NMI, IRQ0, IRQ1, IRQ3 to IRQ5, WKP0 to WKP7
H8S/2264 Group: NMI, IRQ0, IRQ1, IRQ3, IRQ4, WKP0 to WKP7
Figure 22.1 Mode Transition Diagram
Rev. 4.00 Mar 21, 2006 page 552 of 654
REJ09B0071-0400