HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 542

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 13
13.3
There are following five registers related to power-down modes. Refer to section 37, List of
Registers, for more details on the addresses and states of these registers in each operating mode.
• Standby control register (STBCR)
• Standby control register 2 (STBCR2)
• Standby control register 3 (STBCR3)
• Standby control register 4 (STBCR4)
• Standby control register 5 (STBCR5)
13.3.1
STBCR is an 8-bit readable/writable register that specifies the state of power-down modes.
Rev. 3.00
REJ09B0033-0300
Bit
7
6, 5
4
Bit Name
STBY

STBXTL
Register Descriptions
Standby Control Register (STBCR)
Jan. 18, 2008
Power-Down Modes
Initial
Value
0
All 0
0
Page 480 of 1458
R/W
R/W
R
R/W
Description
Standby
Specifies transition to software standby mode.
0: Executing SLEEP instruction enters chip into sleep
1: Executing SLEEP instruction enters chip into software
Reserved
These bits are always read as 0. The write value should
always be 0.
Standby Crystal
Specifies halt/operation of a crystal oscillator in standby
mode.
0: Crystal oscillator is halted in standby mode
1: Crystal oscillator is operated continuously in standby
mode
standby mode
mode