R8A77850ANBGV Renesas Electronics America, R8A77850ANBGV Datasheet - Page 569

• 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: -

command, the constraint tRCD between the ACT command and READ command, and the
constraint tRAS between the ACT command and the PRE command are involved. The DBSC2
waits to issue commands until each of the constraints is satisfied.
MCK0,
MCK1
MCKE
MCS
MRAS
MCAS
MWE
MA[14:11]
MA[9:0]
MA[10]
MBA[2:0]
MDQS[3:0]
MDM[3:0]
MDQ[31:0]
SDRAM
command
bank A
PRE
Valid
Invalid
tRP
= 3 cycles
Invalid
Invalid
Figure 12.14 tRP, tRCD, CL, and tRAS
High level
bank A
ACT
Valid
Valid
Valid
Invalid
Invalid
Invalid
Invalid
tRAS
= 9 cycles
= 3 cycles
tRCD
READ
bank A
Invalid
Valid
Valid
Valid
CL
= 3 cycles
Rev.1.00 Jan. 10, 2008 Page 537 of 1658
12. DDR2-SDRAM Interface (DBSC2)
Invalid
Invalid
Read data
Invalid
bank A
REJ09B0261-0100
PRE
Valid
Invalid
Invalid
Invalid