R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 689
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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13. PCI Controller (PCIC)
(2)
Target Read/Write Cycle Timing
The PCIC returns retries to target memory read accesses from an external master until 8 longword
(32-bit) data are prepared in the PCIC internal FIFO. That is, the first target read is always
responded by a retry.
When a target memory write access is performed for the PCIC, the PCIC returns retries to all
subsequent target memory accesses until the write data is completely written to local memory.
Thus, the data contents are guaranteed when data written to the target is target-read immediately
after it was written.
Only single transfers are supported for target accesses to the configuration space and I/O space. If
a burst access request is issued, the external master is disconnected when the first transfer is
complete. Note that the DEVSEL response speed is fixed to 2 clocks (medium) for the target
access to the PCIC.
Figure 13.23 shows an example of a target single-read cycle in normal mode. Figure 13.24 shows
an example of a target single-write cycle in normal mode. Figure 13.25 shows an example of a
target burst-read cycle in host mode. Figure 13.26 shows an example of a target burst-write cycle
in host mode.
Rev.1.00 Jan. 10, 2008 Page 657 of 1658
REJ09B0261-0100
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