R8A77850ANBGV Renesas Electronics America, R8A77850ANBGV Datasheet - Page 543

• Manufacturer Part Number: R8A77850ANBGV
• Description: IC SUPERH MPU ROMLESS 436-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77850ANBGV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 600MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 108
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1 V ~ 1.2 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 436-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

12. DDR2-SDRAM Interface (DBSC2)
By writing to this register, the DDR2-SDRAM address and bank address pins can be directly
manipulated to set the mode and extended mode registers. When this register is written, the mode
register setting (MRS)/extended mode register setting (EMRS) command is issued for the DDR2-
SDRAM. Upon command execution, settings should be made such that the burst length is 4, the
mode is sequential access mode, and the additive latency (AL) is 0, the DQS is enable, and the
RDQS is disable. Further, settings should be made such that the CAS latency (CL)/write recovery
(WR) is equal to the corresponding bits in SDRAM timing registers 0 and 1 (DBTR0 and
DBTR1).
Rev.1.00 Jan. 10, 2008 Page 511 of 1658
REJ09B0261-0100