R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 567
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
- Current page: 567 of 1694
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Figure 12.13 shows the self-refresh operation. In order to perform self-refresh operation, the
sequence must be observed. For details, refer to section 12.5.4, Self-Refresh Operation.
When performing processing according to the sequence in section 12.5.4, Self-Refresh Operation,
commands to be issued to the SDRAM are those shown in figure 12.13. Before the transition to
self-refresh, the PALL command is issued in software. Then, software is used to issue the REF
command, and the SLFRSH (self-refresh entry from IDLE) command is issued. The SDRAM
continues in self-refresh mode until self-refresh is cancelled in software. After issuing the
SLFRSHX (self-refresh exit) command in software, it is necessary to wait for the time (tXSNR)
specified in the datasheet for the SDRAM being used until issuing a REF command. A wait
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
Figure 12.12 Auto-Refresh Operation
Invalid
PALL
High level
Invalid
Invalid
Invalid
Invalid
Invalid
Rev.1.00 Jan. 10, 2008 Page 535 of 1658
REF
12. DDR2-SDRAM Interface (DBSC2)
REJ09B0261-0100
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