h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 1037

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

HD6432638UF, HD64F2638WF, HD6432638WF, HD64F2639UF, HD6432639UF, HD64F2639WF,
Notes: When a transition is made between modes by means of an interrupt, the transition cannot be made
Program execution state
SLEEP command
SSBY = 1, PSS = 1
DTON = 1, LSON = 0
After the oscillation
stabilization time
(STS2 to 0), clock
switching exception
processing
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 subactive mode.
1.
2.
3.
Section 23B Power-Down Modes [HD64F2636UF, HD6432636UF, HD64F2638UF,
HD6432639WF, HD64F2630UF, HD6432630UF, HD64F2630WF, HD6432630WF]
NMI, IRQ0 to IRQ5, and WDT1 interrupts
NMI, IRQ0 to IRQ5, IWDT0 interrupts, and WDT1 interrupt.
NMI and IRQ0 to IRQ5
SCK2 to
SCK0 = 0
High-speed mode
Sub-active mode
Medium-speed
(main clock)
(main clock)
Reset state
(subclock)
mode
Figure 23B-1 Mode Transition Diagram
: Transition after exception processing
RES pin = High
SCK2 to
SCK0 ≠ 0
SLEEP command
SSBY = 1, PSS = 1
DTON = 1, LSON = 1
Clock switching
exception processing
STBY pin = High
RES pin = Low
SLEEP command
Interrupt *
LSON bit = 0
External
interrupt *
SLEEP command
All interrupt
SLEEP
command
Interrupt *
Interrupt *
LSON bit = 1
SLEEP
command
Rev. 6.00 Feb 22, 2005 page 977 of 1484
SLEEP
command
3
2
2
1
SSBY = 0, LSON = 0
: Low power dissipation mode
Program-halted state
SSBY = 1,
PSS = 0, LSON = 0
SSBY = 0,
PSS = 1, LSON = 1
SSBY = 1,
PSS = 1, DTON = 0
STBY pin = Low
Sub-sleep mode
standby mode
standby mode
Watch mode
Sleep mode
(main clock)
(subclock)
(subclock)
Hardware
Software
REJ09B0103-0600