R8A77850ADBGV#RD0Z Renesas Electronics America, R8A77850ADBGV#RD0Z Datasheet - Page 234
R8A77850ADBGV#RD0Z
Manufacturer Part Number
R8A77850ADBGV#RD0Z
Description
IC SUPERH MPU ROMLESS 436-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850ADBGV#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
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Part Number
Manufacturer
Quantity
Price
Part Number:
R8A77850ADBGV#RD0ZR8A77850ADBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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7. Memory Management Unit (MMU)
• WT: Write-through bit
• UB: Buffered write bit
7.8.4
This LSI supports the following PMB functions.
1. Only memory-mapped write can be used for writing to the PMB. The LDTLB instruction
2. Software must ensure that every accessed P1 or P2 address has a corresponding PMB entry
3. The SH-4A does not guarantee the operation when multiple hit occurs in the PMB. Special
4. The PMB does not have an associative write function.
5. Since there is no PR field in the PMB, read/write protection cannot be preformed. The address
6. Both entries from the UTLB and PMB are mixed and recorded in the ITLB by means of the
Rev.1.00 Jan. 10, 2008 Page 202 of 1658
REJ09B0261-0100
Specifies the cache write mode.
0: Copy-back mode
1: Write-through mode
Specifies whether a buffered write is performed.
0: Buffered write (Data access of subsequent processing proceeds without waiting for the write
1: Unbuffered write (Data access of subsequent processing is stalled until the write has
cannot be used to write to the PMB.
before the access occurs. When an access to an address in the P1 or P2 area which is not
recorded in the PMB is made, this LSI is reset by the TLB. In this case, the accessed address in
the P1 or P2 area which causes the TLB reset is stored in the TEA and code H′140 in the
EXPEVT.
care should be taken when the PMB mapping information is recorded by software.
translation target of the PMB is the P1 or P2 address. In user mode access, an address error
exception occurs.
hardware ITLB miss handling. However, these entries can be identified by checking whether
VPN[31:30] is 10 or not. When an entry from the PMB is recorded in the ITLB, H′00, 01, and
1 are recorded in the ASID, PR, and SH fields which do not exist in the PMB, respectively.
to complete.)
completed.)
PMB Function
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