R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 292

• 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: -

Section 9 L Memory
9.4
This LSI implements the following protective functions to the L memory by using the on-chip
memory access mode bit (RMD) and the on-chip memory protection enable bit (RP) in the on-chip
memory control register (RAMCR).
• Protective functions for access from the CPU and FPU
The above descriptions are summarized in table 9.4.
Table 9.4
Note: * : Don't care
Rev.1.00 Dec. 13, 2005 Page 240 of 1286
REJ09B0158-0100
MMUCR.AT RAMCR.RP SR.MD
0
1
When RAMCR.RMD = 0, and the L memory is accessed in user mode, it is determined to be
an address error exception.
When MMUCR.AT = 1 and RAMCR.RP = 1, MMU exception and address error exception are
checked in the L memory area which is a part of P4 area as with the area P0/P3/U0.
L Memory Protective Functions
Protective Function Exceptions to Access L Memory
*
0
1
0
1
0
1
0
1
RAMCR. RMD
0
1
*
0
1
*
0
1
*
Always Occurring
Exceptions
Address error
exception
—
—
Address error
exception
—
—
Address error
exception
—
—
Possibly Occurring
Exceptions
—
—
—
—
—
—
—
MMU exception
MMU exception