HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 205
HD6417751RF240V
Manufacturer Part Number
HD6417751RF240V
Description
MPU 1.5/3.3V 0K PB-FREE 256-QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417751RBP200DV.pdf
(1226 pages)
Specifications of HD6417751RF240V
Core Processor
SH-4
Core Size
32-Bit
Speed
240MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
39
Program Memory Type
ROMless
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
256-QFP Exposed Pad, 256-eQFP, 256-HQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
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Price
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Part Number:
HD6417751RF240V
Manufacturer:
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• OCI: OC invalidation bit
• CB: Copy-back bit
• WT: Write-through bit
• OCE: OC enable bit
(2) Queue Address Control Register 0 (QACR0): QACR0 can be accessed by longword-size
access from H'FF000038 in the P4 area and H'1F000038 in area 7. QACR0 specifies the area onto
which store queue 0 (SQ0) is mapped when the MMU is off.
(3) Queue Address Control Register 1 (QACR1): QACR1 can be accessed by longword-size
access from H'FF00003C in the P4 area and H'1F00003C in area 7. QACR1 specifies the area onto
which store queue 1 (SQ1) is mapped when the MMU is off.
4.3
4.3.1
The operand cache in the SH7751 adopts the direct-mapping method, and consists of 512 cache
lines. Each cache line is composed of a 19-bit tag, V bit, U bit, and 32-byte data. The operand
cache in the SH7751R adopts the 2-way set-associative method, and each way consists of 512
cache lines.
When 1 is written to this bit, the V and U bits of all OC entries are cleared to 0. This bit always
returns 0 when read.
Indicates the P1 area cache write mode.
0: Write-through mode
1: Copy-back mode
Indicates the P0, U0, and P3 area cache write mode. When address translation is performed,
the value of the WT bit in the page management information has priority.
0: Copy-back mode
1: Write-through mode
Indicates whether or not the OC is to be used. When address translation is performed, the OC
cannot be used unless the C bit in the page management information is also 1.
0: OC not used
1: OC used
Operand Cache (OC)
Configuration
Rev.4.00 Oct. 10, 2008 Page 105 of 1122
REJ09B0370-0400
4. Caches
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