R8A77850ANBGV Renesas Electronics America, R8A77850ANBGV Datasheet - Page 533
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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Note: Writing to this register should be performed only when the following condition is met.
Bit
12 to 0
•
Bit Name
TREFI12 to
TREFI0
When automatic issue of auto-refresh is disabled (when the ARFEN bit in the
DBRFCNT0 register is cleared to 0.).
Initial
Value
0 0010
0000 0000
R/W
R/W
Description
Average Refresh Interval Setting Bits
These bits set the average interval for auto-refresh
operation. Upon refresh execution, this value is added
to the refresh interval count register.
The number of cycles is the number of DDR clock
cycles.
0 0000 0000 0000: Setting prohibited (If specified,
0 0000 0011 1111: Setting prohibited (If specified,
0 0000 0100 0000: 65 cycles
0 0000 0100 0001: 66 cycles
1 1111 1111 1111: 8192 cycles
:
:
Rev.1.00 Jan. 10, 2008 Page 501 of 1658
correct operation cannot be
guaranteed.)
correct operation cannot be
guaranteed.)
12. DDR2-SDRAM Interface (DBSC2)
REJ09B0261-0100
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