R5S72611 RENESAS [Renesas Technology Corp], R5S72611 Datasheet - Page 291
R5S72611
Manufacturer Part Number
R5S72611
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R5S72611.pdf
(1348 pages)
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SDRAMC supports an SDRAM deep-power-down mode. In deep-power-down mode SDRAMC
issues a deep-power-down command and drives the SDCKE signal low level.
Transition to and recovery from deep-power-down mode are performed using the SDRAM deep-
power-down control register (SDDPDCNT).
Setting the DDPD bit to 1 causes SDRAMC to put all channels into deep-power-down mode.
Clearing the DDPD bit to 0 causes SDRAMC to recover from deep-power-down mode.
During recovery from deep-power-down mode, SDRAMC issues a deep-power-down exit
command and drives the SDCKE signal high level.
Following recovery from deep-power-down exit, wait for the duration designated for the SDRAM
being used and then execute an initialization sequence.
Deep-Power-Down Mode
CKIO
SDCKE
SDRAM command
Figure 9.13 SDRAMC Deep-Power-Down Mode
Deep-power-down command
DPD
SDRAMC deep-power-down mode
Rev. 2.00 Sep. 07, 2007 Page 259 of 1312
Deep-power-down exit command
Section 9 Bus State Controller (BSC)
DPDX
REJ09B0320-0200
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