HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 212

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

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: -

4. Caches
• When OC index mode is off (CCR.OIX = 0)
• When OC index mode is on (CCR.OIX = 1)
An example of RAM use in the SH7751R is shown below.
• SH7751-compatible-mode (CCR.EMODE = 0)
• Cache-double-mode (CCR.EMODE = 1)
Rev.4.00 Oct. 10, 2008 Page 112 of 1122
REJ09B0370-0400
H'7C00 0000 to H'7C00 0FFF (4 KB): Corresponds to RAM area 1
H'7C00 1000 to H'7C00 1FFF (4 KB): Corresponds to RAM area 1
H'7C00 2000 to H'7C00 2FFF (4 KB): Corresponds to RAM area 2
H'7C00 3000 to H'7C00 3FFF (4 KB): Corresponds to RAM area 2
H'7C00 4000 to H'7C00 4FFF (4 KB): Corresponds to RAM area 1
RAM areas 1 and 2 then repeat every 8 Kbytes up to H'7FFF FFFF.
Thus, to secure a continuous 8-Kbyte RAM area, the area from H'7C00 1000 to H'7C00 2FFF
can be used, for example.
H'7C00 0000 to H'7C00 0FFF (4 KB): Corresponds to RAM area 1
H'7C00 1000 to H'7C00 1FFF (4 KB): Corresponds to RAM area 1
H'7C00 2000 to H'7C00 2FFF (4 KB): Corresponds to RAM area 1
H'7DFF F000 to H'7DFF FFFF (4 KB): Corresponds to RAM area 1
H'7E00 0000 to H'7E00 0FFF (4 KB): Corresponds to RAM area 2
H'7E00 1000 to H'7E00 1FFF (4 KB): Corresponds to RAM area 2
H'7FFF F000 to H'7FFF FFFF (4 KB): Corresponds to RAM area 2
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): Corresponds to RAM area (entries 256 to 511)
H'7C00 2000 to H'7C00 3FFF (8 KB): Corresponds to RAM area (entries 256 to 511)
A shadow of the RAM area occurs every 8 Kbytes up to H'7FFF FFFF.
The 8 Kbytes of entries 256 to 511 in OC way 0 are used as RAM area 1, and the 8 Kbytes of
entries 256 to 511 in OC way 1 are used 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
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