h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 136

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 6 PC Break Controller (PBC)
3. When the SLEEP instruction causes a transition from subactive mode to high-speed (medium-
4. When the SLEEP instruction causes a transition to software standby mode or watch mode:
Rev. 2.00 Dec. 05, 2005 Page 98 of 724
REJ09B0200-0200
Execution of instruction
after sleep instruction
PC break exception
SLEEP instruction
After execution of the SLEEP instruction, a transition is made to subactive mode via direct
transition exception handling. After the transition, PC break interrupt handling is executed,
then the instruction at the address after the SLEEP instruction is executed (figure 6-2 (B)).
speed) mode:
After execution of the SLEEP instruction, and following the clock oscillation settling time, a
transition is made to high-speed (medium-speed) mode via direct transition exception
handling. After the transition, PC break interrupt handling is executed, then the instruction at
the address after the SLEEP instruction is executed (figure 6.2 (C)).
After execution of the SLEEP instruction, a transition is made to the respective mode, and PC
break interrupt handling is not executed. However, the CMFA or CMFB flag is set (figure 6.2
(D)).
execution
handling
(A)
Figure 6.2 Operation in Power-Down Mode Transitions
Execution of instruction
after sleep instruction
PC break exception
exception handling
SLEEP instruction
Direct transition
System clock
→ subclock
execution
handling
(B)
Subactive
mode
Execution of instruction
oscillation settling time
after sleep instruction
PC break exception
exception handling
SLEEP instruction
Direct transition
system clock,
Subclock →
execution
handling
(C)
High-speed
(medium-speed)
mode
SLEEP instruction
respective mode
Transition to
execution
(D)