R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 201

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77800ANBGAV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 75
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 449-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

7.1.1
Virtual Address Space: This LSI supports a 32-bit virtual address space, and can access a 4-
Gbyte address space. The virtual address space is divided into a number of areas, as shown in
figures 7.2 and 7.3. In privileged mode, the 4-Gbyte space from the P0 area to the P4 area can be
accessed. In user mode, a 2-Gbyte space in the U0 area can be accessed. When the SQMD bit in
the MMU control register (MMUCR) is 0, a 64-Mbyte space in the store queue area can be
accessed. When the RMD bit in the on-chip memory control register (RAMCR) is 1, a 16-Mbyte
space in on-chip memory area can be accessed. Accessing areas other than the U0 area, store
queue area, and on-chip memory area in user mode will cause an address error.
When the AT bit in MMUCR is set to 1 and the MMU is enabled, the P0, P3, and U0 areas can be
mapped onto any physical address space in 1-, 4-, or 64-Kbyte, or 1-Mbyte page units. By using
an 8-bit address space identifier, the P0, P3, and U0 areas can be increased to a maximum of 256.
Process 1
Address Spaces
Physical
Memory
(0)
Process 1
Process 2
Process 3
Process 1
Figure 7.1 Role of MMU
Physical
Memory
Physical
Memory
(1)
(3)
Section 7 Memory Management Unit (MMU)
Process 1
Process 1
Process 2
Process 3
Rev.1.00 Dec. 13, 2005 Page 149 of 1286
Virtual
Memory
Virtual
Memory
MMU
MMU
REJ09B0158-0100
Physical
Memory
Physical
Memory
(2)
(4)