h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 625

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

Section 21 Power-Down Modes
When the SLEEP instruction is executed with the SSBY bit in SBYCR = 1, the DTON bit in
LPWRCR = 0, and the PSS bit in TCSR (WDT1) = 1, subactive mode is canceled and a transition
is made to watch mode. When the SLEEP instruction is executed with the SSBY bit in SBYCR =
0, the LSON bit in LPWRCR = 1, and the PSS bit in TCSR (WDT1) = 1, a transition is made to
subsleep mode. When the SLEEP instruction is executed with the SSBY bit in SBYCR = 1, the
DTON bit in LPWRCR = 1, the LSON bit = 0, and the PSS bit in TCSR (WDT1) = 1, a direct
transition is made to high-speed mode (SCK0 to SCK2 are all 0).
For details on direct transitions, see section 21.10, Direct Transitions
For canceling subactive mode by the RES pin, see section 21.4, Software Standby Mode.
When the STBY pin is driven low, a transition is made to hardware standby mode.
21.9
Module Stop Mode
Module stop mode can be set for individual on-chip peripheral modules.
When the corresponding MSTP bit in MSTPCR is set to 1, module operation stops at the end of
the bus cycle and a transition is made to module stop mode. The CPU continues operating
independently.
Table 21.4 shows MSTP bits and the corresponding on-chip supporting modules.
When the corresponding MSTP bit is cleared to 0, module stop mode is canceled and the module
starts operating at the end of the bus cycle. In module stop mode, the internal states of modules
other than the SCI*, motor control PWM, A/D converter, and HCAN are retained.
After reset clearance, all modules other than DTC are in module stop mode.
When an on-chip peripheral module is in module stop mode, read/write access to its registers is
disabled.
Note
* Internal states in some part of registers in SCI are retained.
Rev. 2.00 Dec. 05, 2005 Page 587 of 724
REJ09B0200-0200