HD6417706F133 Renesas Electronics America, HD6417706F133 Datasheet - Page 151
HD6417706F133
Manufacturer Part Number
HD6417706F133
Description
IC SUPERH MPU ROMLESS 176LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.HD6417706F133V.pdf
(751 pages)
Specifications of HD6417706F133
Core Processor
SH-3
Core Size
32-Bit
Speed
133MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
103
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.75 V ~ 2.05 V
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
176-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
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5.2
The cache includes the following registers. Refer to section 23, List of Registers, for more details
of the addresses and access sizes.
5.2.1
The cache is enabled or disabled using the CE bit of the cache control register (CCR). CCR also
has a CF bit (which invalidates all cache entries), and a WT and CB bits (which select either write-
through mode or write-back mode). Programs that change the contents of the CCR register should
be placed in address space that is not cached.
Bit
31 to 4
3
2
1
0
Cache control register (CCR)
Cache control register 2 (CCR2)
Register Description
Bit Name
CF
CB
WT
CE
Cache Control Register (CCR)
Initial Value
All 0
0
0
0
0
R/W
R
R
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
Cache Flash
When 1 is set, the V, U and LRU bits of all cache
entries are cleared to 0 (flush).
This bit is always read as 0. Write-back to external
memory is not performed when the cache is flushed.
Cache Write-back
Indicates the cache's operating mode for area P1.
0: Write-through mode
1: Write-back mode
Write through
Indicates the cache's operating mode for area P0, U0,
and P3.
0: Write-back mode
1: Write-through mode
Cache enable
Indicates whether to use the cache function.
0: Cache not used
1: Cache used
Rev. 5.00 May 29, 2006 page 101 of 698
REJ09B0146-0500
Section 5 Cache
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