h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 161

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

6.3.4
The operation when a PC break interrupt is set for an instruction fetch at the address after a
SLEEP instruction is shown below.
1. When the SLEEP instruction causes a transition from high-speed (medium-speed) mode to
2. When the SLEEP instruction causes a transition from high-speed (medium-speed) mode to
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:
sleep mode, or from subactive mode to subsleep mode:
After execution of the SLEEP instruction, a transition is not made to sleep mode or subsleep
mode, and PC break interrupt handling is executed. After execution of PC break interrupt
handling, the instruction at the address after the SLEEP instruction is executed (figure 6.2 (A)).
subactive mode:
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)).
Operation in Transitions to Power-Down Modes
Rev. 5.00 Sep 22, 2005 page 135 of 1136
Section 6 PC Break Controller (PBC)
REJ09B0257-0500