R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 183
R8A77850AADBGV
Manufacturer Part Number
R8A77850AADBGV
Description
IC SUPERH MCU 436-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850AADBGV
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
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R8A77850AADBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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the return from the exception handling routine, the instruction which caused the TLB miss
exception is re-executed.
(4)
There are two virtual memory systems, single virtual memory and multiple virtual memory, either
of which can be selected with the SV bit in MMUCR. In the single virtual memory system, a
number of processes run simultaneously, using virtual address space on an exclusive basis, and the
physical address corresponding to a particular virtual address is uniquely determined. In the
multiple virtual memory system, a number of processes run while sharing the virtual address
space, and particular virtual addresses may be translated into different physical addresses
depending on the process. The only difference between the single virtual memory and multiple
virtual memory systems in terms of operation is in the TLB address comparison method (see
section 7.3.3, Address Translation Method).
(5)
In multiple virtual memory mode, an 8-bit address space identifier (ASID) is used to distinguish
between multiple processes running simultaneously while sharing the virtual address space.
Software can set the 8-bit ASID of the currently executing process in PTEH in the MMU. The
TLB does not have to be purged when processes are switched by means of ASID.
In single virtual memory mode, ASID is used to provide memory protection for multiple processes
running simultaneously while using the virtual address space on an exclusive basis.
Note: Two or more entries with the same virtual page number (VPN) but different ASID must
Single Virtual Memory Mode and Multiple Virtual Memory Mode
Address Space Identifier (ASID)
not be set in the TLB simultaneously in single virtual memory mode.
Rev.1.00 Jan. 10, 2008 Page 151 of 1658
7. Memory Management Unit (MMU)
REJ09B0261-0100
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