R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 492

• Manufacturer Part Number: R5S77631Y266BGV
• Description: IC SUPERH MPU ROMLESS 499BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R5S77631Y266BGV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 266MHz
• Connectivity: Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 107
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Data Converters: A/D 4x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 499-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 12 DDR-SDRAM Interface (DDRIF)
Rev. 2.00 May 22, 2009 Page 422 of 1982
REJ09B0256-0200
Bit
8
7 to 4
3
2, 1
0
Bit Name
ENDIAN

DLLEN

DCE
Initial
Value
Undefined R
All 0
0
All 0
0
R/W
R
R/W
R
R/W
Description
Endian Identification
Indicates whether the big endian mode or little endian
mode is set to the external data bus.
1: Big endian mode
0: Little endian mode
Reserved
These bits are always read as 0. The write value
should always be 0.
DLL Enable
Sets whether the DLL for generating the read timing for
the DDR-SDRAM is valid or invalid. When this bit is
set to 1, the DLL is enabled and read access to
memory is possible.
Reserved
These bits are always read as 0. The write value
should always be 0.
DDR Controller Enable
Enables SDRAM control by the DDRIF.
1: Enable
0: Disable