Section 17 power-down mode, 1 features, 1 types of power-down modes – Renesas SH7781 User Manual

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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.