R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 275
R5S77631Y266BGV
Manufacturer Part Number
R5S77631Y266BGV
Description
IC SUPERH MPU ROMLESS 499BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R5S77631Y266BGV.pdf
(2056 pages)
Specifications of R5S77631Y266BGV
Core Processor
SH-4A
Core Size
32-Bit
Speed
266MHz
Connectivity
Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
107
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.15 V ~ 1.35 V
Data Converters
A/D 4x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
499-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5S77631Y266BGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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PURGE transaction: When the operand cache is enabled, the PURGE transaction checks the
operand cache and invalidates the hit entry. If the invalidated entry is dirty, the data is written back
to the external memory. If the transaction is not hit to the cache, it is no-operation.
FLUSH transaction: When the operand cache is enabled, the FLUSH transaction checks the
operand cache and if the hit line is dirty, then the data is written back to the external memory.
If the transaction is not hit to the cache or the hit entry is not dirty, it is no-operation.
7.5.2
This LSI supports a prefetch instruction to reduce the cache fill penalty incurred as the result of a
cache miss. If it is known that a cache miss will result from a read or write operation, it is possible
to fill the cache with data beforehand by means of the prefetch instruction to prevent a cache miss
due to the read or write operation, and so improve software performance. If a prefetch instruction
is executed for data already held in the cache, or if the prefetch address results in a UTLB miss or
a protection violation, the result is no operation, and an exception is not generated. Details of the
prefetch instruction are given in the Programming Manual.
• Prefetch instruction (OC)
• Prefetch instruction (IC)
Prefetch Operation
: PREF @Rn
: PREFI @Rn
Rev. 2.00 May 22, 2009 Page 205 of 1982
Section 7 Caches
REJ09B0256-0200
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