R8A77850BDBGV#RD0Z Renesas Electronics America, R8A77850BDBGV#RD0Z Datasheet - Page 1238
![IC SUPERH MPU ROMLESS 436BGA](/photos/28/62/286211/436-bfbga_sml.jpg)
R8A77850BDBGV#RD0Z
Manufacturer Part Number
R8A77850BDBGV#RD0Z
Description
IC SUPERH MPU ROMLESS 436BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850BDBGV#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
-
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24. Multimedia Card Interface (MMCIF)
24.3.16 Data Register (DR)
DR is a register for reading/writing FIFO data.
Word/byte access is enabled to addresses of this register.
The following shows examples of DR access.
When data is written to DR in the following steps 1 to 4, the transmit data is stored in the FIFO as
shown in figure 24.2.
1. Write word data H'0123 to DR.
2. Write byte data H'45 to DR.
3. Write word data H'6789 to DR.
4. Write byte data H'AB to DR.
When the receive data is stored in the FIFO as shown in figure 24.2 (for example, after data is
started to be received while the FIFO is empty and data is received in the order of H'01, H'23, ...,
H'AB), data can be read from DR in the following steps 5 to 8.
5. Read byte data H'01 from DR.
6. Read word data H'2345 from DR.
7. Read byte data H'67 from DR.
8. Read word data H'89AB from DR.
Rev.1.00 Jan. 10, 2008 Page 1206 of 1658
REJ09B0261-0100
Initial value:
Bit
15 to 0
R/W:
Bit:
Bit Name
DR
R/W
15
—
R/W
14
—
R/W
13
—
Initial
Value
⎯
R/W
12
—
R/W
11
—
R/W
R/W
R/W
10
—
Description
Register for reading/writing FIFO data.
Word/byte access is enabled.
When DR is accessed in words, the upper and lower
bytes are transmitted or received in that order. Word
access and byte access can be done in random order.
However, (DR address + 1) cannot be accessed in
bytes.
R/W
—
9
R/W
—
8
DR
R/W
—
7
R/W
—
6
R/W
—
5
R/W
—
4
R/W R/W
3
—
—
2
R/W
—
1
R/W
—
0
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