Renesas SH7781 - Manual (Page 811)

17. Power-Down Mode
Rev.1.00 Jan. 10, 2008 Page 781 of 1658
REJ09B0261-0100
Section 17 Power-Down Mode
In power-down mode, some of the on-chip modules and the CPU are stopped. This enables to
reduce power consumption.
17.1 Features
• Supports sleep mode, deep sleep mode, and module standby mode
• Supports DDR2-SDRAM power supply backup mode that turns off the power supplies the 1.8-
V power supply
17.1.1 Types of Power-Down Modes
Power-down modes have the following modes and functions.
• Sleep mode
• Deep sleep mode
• Module standby function
• DDR-SDRAM power supply backup
Table 17.1 shows the conditions of transition to each mode, the states of the CPU, on-chip
modules, etc. in each mode, and the methods for releasing each mode.