R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 185
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
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R8A77850AADBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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7.2.1
PTEH consists of the virtual page number (VPN) and address space identifier (ASID). When an
MMU exception or address error exception occurs, the VPN of the virtual address at which the
exception occurred is set in the VPN bit by hardware. VPN varies according to the page size, but
the VPN set by hardware when an exception occurs consists of the upper 22 bits of the virtual
address which caused the exception. VPN setting can also be carried out by software. The number
of the currently executing process is set in the ASID bit by software. ASID is not updated by
hardware. VPN and ASID are recorded in the UTLB by means of the LDTLB instruction.
After the ASID field in PTEH has been updated, execute one of the following three methods
before an access (including an instruction fetch) to the P0, P3, or U0 area that uses the updated
ASID value is performed.
1. Execute a branch using the RTE instruction. In this case, the branch destination may be the P0,
2. Execute the ICBI instruction for any address (including non-cacheable area).
3. If the R2 bit in IRMCR is 0 (initial value) before updating the ASID field, the specific
Note that the method 3 may not be guaranteed in the future SuperH Series. Therefore, it is
recommended that the method 1 or 2 should be used for being compatible with the future SuperH
Series.
Register Name
Instruction re-fetch inhibit control
register
Initial value:
Initial value:
P3, or U0 area.
instruction does not need to be executed. However, note that the CPU processing performance
will be lowered because the instruction fetch is performed again for the next instruction after
the ASID field has been updated.
R/W:
R/W:
Bit:
Bit:
Page Table Entry High Register (PTEH)
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
R/W R/W R/W R/W R/W R/W
31
15
30
14
29
13
VPN
28
12
Abbreviation
IRMCR
27
11
26
10
25
R
9
0
Power-on
Reset
H'0000 0000 H'0000 0000 Retained
24
R
8
0
VPN
R/W R/W R/W R/W
23
7
Manual
Reset
Rev.1.00 Jan. 10, 2008 Page 153 of 1658
22
6
7. Memory Management Unit (MMU)
21
5
20
4
Sleep
ASID
R/W R/W R/W R/W
R/W R/W R/W R/W
19
3
REJ09B0261-0100
18
2
Standby
Retained
17
1
16
0
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