h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 824

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 27 Power-Down Modes
27.1
Power-down modes are controlled by the following registers. To access SBYCR, LPWRCR,
SYSCR2, MSTPCRH, and MSTPCRL, the FLSHE bit in the serial timer control register (STCR)
must be cleared to 0. For details on STCR, see section 3.2.3, Serial Timer Control Register
(STCR).
27.1.1
SBYCR controls power-down modes.
Rev. 3.00 Jan 25, 2006 page 772 of 872
REJ09B0286-0300
Bit
7
Standby control register (SBYCR)
Low power control register (LPWRCR)
System control register 2 (SYSCR2)
Module stop control register H (MSTPCRH)
Module stop control register L (MSTPCRL)
Sub-chip module stop control register BH (SUBMSTPBH)
Sub-chip module stop control register BL (SUBMSTPBL)
Bit Name Initial Value R/W
SSBY
Register Descriptions
Standby Control Register (SBYCR)
0
R/W
Description
Software Standby
Specifies the operating mode to be entered after executing
the SLEEP instruction.
When the SLEEP instruction is executed in high-speed
mode or medium-speed mode:
0: Shifts to sleep mode
1: Shifts to software standby mode, subactive mode, or
When the SLEEP instruction is executed in subactive
mode:
0: Shifts to subsleep mode
1: Shifts to watch mode or high-speed mode
Note that the SSBY bit is not changed even if a mode
transition occurs by an interrupt.
watch mode