p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 609

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Program execution state
SLEEP instruction
SSBY = 1, PSS = 1,
DTON = 1, LSON = 0
After the oscillation
stabilization time
(STS2 to STS0), clock
switching exception
processing
Notes: • When a transition is made between modes by means of an interrupt, the transition cannot be made
1.
2.
3.
• Always select high-speed mode before making a transition to watch mode or subactive mode.
on interrupt source generation alone. Ensure that interrupt handling is performed after accepting the
interrupt request.
SCK2 to
SCK0 are
0
NMI, IRQ0 to IRQ7, and WDT_1 interrupts
NMI, IRQ0 to IRQ7, WDT_0, WDT_1, TMR_0, and TMR_1 interrupts
NMI and IRQ0 to IRQ7 interrupts
Subactive mode
Medium-speed
(main clock)
High-speed
(main clock)
Reset state
(subclock)
mode
mode
RES pin = High
SCK2 to
SCK0 are
not 0
SLEEP instruction
SSBY = 1, PSS = 1,
DTON = 1, LSON = 1
Clock switching
exception processing
: Transition after exception processing
Figure 22.1 Mode Transition Diagram
STBY pin = High
RES pin = Low
External interrupt*
Interrupt*
LSON bit = 0
SLEEP
instruction
SLEEP instruction
SLEEP instruction
Any interrupt
SLEEP instruction
Interrupt*
1
Interrupt*
LSON bit = 1
SLEEP
instruction
2
3
Rev. 1.00 Sep. 21, 2006 Page 571 of 658
1
Section 22 Power-Down Modes
SSBY = 0, LSON = 0
SSBY = 1,
PSS = 0, LSON = 0
: Power-down mode
Program halt state
SSBY = 1,
PSS = 1, DTON = 0
SSBY = 0,
PSS = 1, LSON = 1
STBY pin = Low
Subsleep mode
standby mode
standby mode
Watch mode
(main clock)
Sleep mode
(subclock)
(subclock)
Hardware
Software
REJ09B0310-0100