HD6417750SF200V Renesas Electronics America, HD6417750SF200V Datasheet - Page 210

• Manufacturer Part Number: HD6417750SF200V
• Description: MPU 3V 16K PB-FREE 208-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417750SF200V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 28
• Program Memory Type: ROMless
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 2.07 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 4 Caches
Examples of RAM usage with the SH7750R is shown below.
• In SH7750/SH7750S-compatible mode (CCR.EMODE = 0)
• In double-sized cache mode (CCR.EMODE = 1)
4.3.7
Setting CCR.OIX to 1 enables OC indexing to be performed using bit [25] of the effective
address. This is called OC index mode. In normal mode, with CCR.OIX cleared to 0, OC indexing
is performed using bits [13:5] of the effective address. Using index mode allows the OC to be
handled as two areas by means of effective address bit [25], providing efficient use of the cache.
The SH7750R cannot be used in RAM mode when OC index mode is selected.
Rev.7.00 Oct. 10, 2008 Page 124 of 1074
REJ09B0366-0700
As the distinction between RAM areas 1 and 2 is indicated by address bit [25], the area from
H'7DFF F000 to H'7E00 0FFF should be used to secure a continuous 8-Kbyte RAM area.
H'7C00 0000 to H'7C00 1FFF (8 KB): RAM area (entries 256 to 511)
H'7C00 2000 to H'7C00 3FFF (8 KB): RAM area (entries 256 to 511)
In the same pattern, shadows of the RAM area are created in 8-Kbyte blocks until H'7FFF
FFFF is reached.
In this mode, the 8 Kbytes comprising entries 256 to 511 of OC way 0 are designated as RAM
area 1 and the 8-Kbytes comprising entries 256 to 511 of OC way 1 are designated as RAM
area 2.
H'7C00 0000 to H'7C00 1FFF (8 KB): Corresponds to RAM area 1
H'7C00 2000 to H'7C00 3FFF (8 KB): Corresponds to RAM area 2
H'7C00 4000 to H'7C00 5FFF (8 KB): Corresponds to RAM area 1
H'7C00 6000 to H'7C00 7FFF (8 KB): Corresponds to RAM area 2
In the same pattern, shadows of the RAM area are created in 16-Kbyte blocks until H'7FFF
FFFF is reached.
OC Index Mode
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