SH7727 Datasheet, PDF (305/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 9 Power-Down Modes and Software Reset
Section 9 Power-Down Modes and Software Reset
9.1 Overview
In the power-down modes, all CPU and some on-chip supporting module functions are halted.
This lowers power consumption. In particular, the X/Y memory can be stopped to significantly
reduce power consumption. Software reset function enables each module to reset itself.
9.1.1 Power-Down Modes
The SH7727 has three power-down modes:
1. Sleep mode
2. Standby mode
3. Module standby function (TMU, RTC, SCI, X/Y memory, UBC, DMAC, DAC, ADC, SCIF,
LCDC, PCC, USBH, USBF, AFEIF, and SIOF on-chip supporting modules)
4. Hardware standby mode
Table 9.1 shows the transition conditions for entering any mode from the program execution state,
the CPU and supporting module states in each mode, and the procedures for canceling each mode.
Rev. 5.00 Dec 12, 2005 page 233 of 1034
REJ09B0254-0500