R8A77850ANBGV Renesas Electronics America, R8A77850ANBGV Datasheet - Page 542
R8A77850ANBGV
Manufacturer Part Number
R8A77850ANBGV
Description
IC SUPERH MPU ROMLESS 436-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R8A77850ANBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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12. DDR2-SDRAM Interface (DBSC2)
12.4.14 SDRAM Mode Setting Register (DBMRCNT)
The SDRAM mode setting register (DBMRCNT) is a write-only register. If it is read, correct
operation cannot be guaranteed.
Rev.1.00 Jan. 10, 2008 Page 510 of 1658
REJ09B0261-0100
Initial value:
Initial value:
Bit
31 to 19 ⎯
18 to 16 BA2 to BA0 Undefined W
15
14 to 0
R/W:
R/W:
BIt:
BIt:
Bit Name
⎯
MA14 to
MA0
31
15
⎯
⎯
W
⎯
⎯
W
MA14
30
⎯
⎯
14
⎯
W
W
MA13
29
⎯
⎯
13
⎯
Initial
Value
Undefined W
Undefined W
Undefined W
W
W
MA12
28
12
⎯
⎯
⎯
W
W
MA11
27
11
⎯
⎯
⎯
W
W
R/W
MA10
26
10
⎯
⎯
W
⎯
W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
If a value other than 0 is written, correct operation
cannot be guaranteed.
SDRAM Mode Register and Extended Mode Register
Setting Bits
Bank address pins MBA2, MBA1, and MBA0
correspond to bit 18, bit 17, and bit 16, respectively.
Reserved
This bit is always read as 0. The write value should
always be 0.
If a value other than 0 is written, correct operation
cannot be guaranteed.
SDRAM Mode Register and Extended Mode Register
Setting Bits
The address pins MA14, MA13, ..., and MA0
correspond to bit 14, bit 13, ..., and bit 0, respectively.
MA9
25
⎯
⎯
W
⎯
W
9
MA8
24
⎯
⎯
W
⎯
W
8
MA7
23
⎯
⎯
W
⎯
W
7
MA6
22
⎯
⎯
W
⎯
W
6
MA5
21
⎯
⎯
⎯
W
W
5
MA4
20
⎯
⎯
⎯
W
W
4
MA3
19
⎯
⎯
⎯
W
W
3
MA2
BA2
18
⎯
⎯
W
W
2
MA1
BA1
17
⎯
W
⎯
W
1
MA0
BA0
16
⎯
W
⎯
W
0
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