R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 743
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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In dual address mode, both the transfer source and transfer destination are accessed by address.
The source and destination can be specified externally or internally. Data is read from the transfer
source in a data read cycle and written to the transfer destination in a data write cycle, and two bus
cycles are required to execute DMA transfer. At this time, transfer data is temporarily stored in the
DMAC. In the transfer between external memories shown in figure 14.4, data is read from an
external memory to the DMAC in a data read cycle, and then the data is written to the other
external memory in a write cycle.
Figure 14.5 shows the DMA transfer timing in dual address mode.
Dual Address Mode
The SAR value is an address, data is read from the transfer source module,
and the data is temporarily stored in the DMAC.
The DAR value is an address and the value stored in the data buffer in the
DMAC is written to the transfer destination module.
Data buffer
Data buffer
Figure 14.4 Data Flow of Dual Address Mode
DMAC
DMAC
SAR
DAR
SAR
DAR
Second bus cycle
First bus cycle
Transfer destination
Transfer destination
Transfer source
Transfer source
14. Direct Memory Access Controller (DMAC)
Memory
Memory
module
module
module
module
Rev.1.00 Jan. 10, 2008 Page 711 of 1658
REJ09B0261-0100
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