R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 566
R8A77850AADBGV
Manufacturer Part Number
R8A77850AADBGV
Description
IC SUPERH MCU 436-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850AADBGV
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
-40°C ~ 85°C
Package / Case
436-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R8A77850AADBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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12. DDR2-SDRAM Interface (DBSC2)
Figure 12.12 shows waveforms during auto-refresh operation resulting from settings of the
SDRAM refresh control registers 0, 1, and 2. The DBSC2 issues a REF command automatically
after the PALL command is issued when at least one DDR2-SDRAM bank is activated before the
REF command. Consequently, there is no need to use software to manage precharging of all the
banks for the auto-refresh operation.
Rev.1.00 Jan. 10, 2008 Page 534 of 1658
REJ09B0261-0100
Figure 12.11 Waveforms for 32-Byte Writing (When the Bus Width Is Set to 32 Bits)
Example of CL = 3
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
ACT
Valid
Valid
Valid
Invalid
Invalid
Invalid
Invalid
Invalid
High level
WRITE
bank A
Valid
Valid
Valid
Invalid
Invalid
Invalid
WRITE
bank A
Valid
Valid
Valid
Write data
Invalid
Invalid
Invalid
Invalid
Invalid
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