R8A77850BDBGV#RD0Z Renesas Electronics America, R8A77850BDBGV#RD0Z Datasheet - Page 292
![IC SUPERH MPU ROMLESS 436BGA](/photos/28/62/286211/436-bfbga_sml.jpg)
R8A77850BDBGV#RD0Z
Manufacturer Part Number
R8A77850BDBGV#RD0Z
Description
IC SUPERH MPU ROMLESS 436BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850BDBGV#RD0Z
Core Processor
SH-4A
Core Size
32-Bit
Speed
600MHz
Connectivity
Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
Peripherals
DMA, POR, WDT
Number Of I /o
108
Program Memory Type
ROMless
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1 V ~ 1.2 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
436-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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9. On-Chip Memory
9.4
This LSI implements the following protective functions to the on-chip 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 9.6.
Table 9.6
Legend:
Rev.1.00 Jan. 10, 2008 Page 260 of 1658
REJ09B0261-0100
MMUCR.AT RAMCR.RP SR.MD
0
1
When RAMCR.RMD = 0, and the on-chip 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 on-chip memory area which is a part of area P4 as with the area P0/P3/U0.
On-Chip Memory Protective Functions
x: Don't care
Protective Function Exceptions to Access On-Chip Memory
x
0
1
0
1
0
1
0
1
RAMCR. RMD
0
1
x
0
1
x
0
1
x
Always Occurring
Exceptions
Address error
exception
—
—
Address error
exception
—
—
Address error
exception
—
—
Possibly Occurring
Exceptions
—
—
—
—
—
—
—
MMU exception
MMU exception
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