R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 522
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: 522 of 1694
- Download datasheet (9Mb)
12. DDR2-SDRAM Interface (DBSC2)
Rev.1.00 Jan. 10, 2008 Page 490 of 1658
REJ09B0261-0100
Bit
14 to 8
7 to 3
Bit Name
TRFC0
⎯
TRFC6 to
Initial
Value
000 0101
All 0
R/W
R/W
R
Description
tRFC (REF-ACT/REF period) Setting Bits
These bits set the REF-ACT/REF minimum period
constraint These bits should be set according to the
DDR2-SDRAM specifications. The number of cycles is
the number of DDR clock cycles.
000 0000: Setting prohibit (If specified, correct operation
000 0100: Setting prohibit (If specified, correct operation
000 0101: 6 cycles
000 0110: 7 cycles
100 0001: 66 cycles
100 0010: Setting prohibit (If specified, correct operation
111 1111: Setting prohibit (If specified, correct operation
Reserved
These bits are always read as 0. The write value should
always be 0.
Operation when a value other than 0 is written is not
guaranteed.
:
:
:
cannot be guaranteed.)
cannot be guaranteed.)
cannot be guaranteed.)
cannot be guaranteed.)
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