h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 542

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21 Power-Down Modes
Table 21.1 Low Power Consumption Mode Transition Conditions
Rev. 3.00 Oct 04, 2005 page 502 of 598
REJ09B0155-0300
Pre-Transition
State
High-speed/
Medium-speed
Program execution state
Notes:
* NMI and IRQ5 to IRQ0
• When a transition is made between modes by means of an interrupt, the transition cannot be
• From any state except hardware standby mode, a transition to the reset state occurs when RES
• From any state, a transition to hardware standby mode occurs when STBY is driven low.
made on interrupt source generation alone. Ensure that interrupt handling is performed after
accepting the interrupt request.
is driven low.
SCK2 to
SCK0 = 0
Status of Control
Bit at Transition
SSBY
0
1
High-speed mode
Medium-speed
(main clock)
(main clock)
Reset state
mode
: Transition after exception processing
Figure 21.1 Mode Transition Diagram
SCK2 to
SCK0 ≠ 0
RES pin = High
State after Transition
Invoked by SLEEP
Command
Sleep
Software standby
STBY pin = High,
RES pin = Low
SLEEP command
Any interrupt
SLEEP
command
External
interrupt *
: Low power dissipation mode
State after Transition Back
from Low Power Mode
Invoked by Interrupt
High-speed/Medium-speed
High-speed/Medium-speed
Program-halted state
STBY pin = Low
standby mode
standby mode
Sleep mode
(main clock)
SSBY = 1
SSBY = 0
Hardware
Software