R0K572011S000BE Renesas Electronics America, R0K572011S000BE Datasheet - Page 293

• Manufacturer Part Number: R0K572011S000BE
• Description: KIT STARTER FOR SH7201
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572011S000BE

• Contents: CPU Board, LCD Display Module, E8 Emulator, Cable, QuickStart Guide and CD-ROM
• For Use With/related Products: SH7201
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SH7201 Group
Figure 9.29 shows the procedure for recovering from deep-power-down mode.
Note: Before transitioning to or recovering from deep-power-down mode it is necessary to halt
R01UH0026EJ0300 Rev. 3.00
Sep 24, 2010
SDRAM access to the affected channels. Consequently, it is not possible to transition to or
recover from deep-power-down mode while programs or DMA operations that access
SDRAM are in progress. Pay attention to the following points when writing programs.
• Before transitioning to deep-power-down mode, halt any DMA channel transfers that
• Make sure that programs run while transitioning to deep-power-down mode, while in
access the SDRAM area of the affected channels.
deep-power-down mode, or while recovering from deep-power-down mode do not
access operands or fetch (or pre-fetch) instructions stored in the SDRAM area.
Figure 9.29 Procedure for Recovery from Deep-Power-Down Mode
Deep-power-down mode
End deep-power-down mode
(1) Confirm that all status bits in SDSTR have been cleared to 0
(2) Clear deep-power-down enable bit to 0 by means of program assigned to
Standby
Use a timer, etc., to wait for the same duration as the standby time specified
in the power-on sequence (determined by specifications of SDRAM used)
Initialization sequence
(1) Set initialization sequence start bit (DINIRQm) to 1 by means of program
(2) Wait for initialization sequence start bit (DINISTm) to be cleared to 0
Mode register setting
(1) Perform mode register setting
(2) Perform extended mode register setting
Start auto-refresh
Set DRFEN bit in SDRFCNT1 to 1
Access enabled status
(EXENB = 1)
other than to corresponding channel area
assigned to other than to corresponding channel area
Section 9 Bus State Controller (BSC)
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