R0K561622S000BE Renesas Electronics America, R0K561622S000BE Datasheet - Page 229
R0K561622S000BE
Manufacturer Part Number
R0K561622S000BE
Description
KIT STARTER FOR H8SX/1622
Manufacturer
Renesas Electronics America
Series
Renesas Starter Kits (RSK)r
Type
MCUr
Specifications of R0K561622S000BE
Contents
Board, Cables, CD, Debugger, Power Supply
Silicon Manufacturer
Renesas
Features
Coding And Debugging, E10A Emulator, RS232 Serial Connection
Kit Contents
Board
Silicon Family Name
H8SX/1622F
Silicon Core Number
R5F61622N50LGV
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
H8SX/1622
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
- Current page: 229 of 1070
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8.5.6
Data sizes for the CPU and other internal bus masters are byte, word, and longword. The bus
controller has a data alignment function, and controls whether the upper byte data bus (D15 to D8)
or lower data bus (D7 to D0) is used according to the bus specifications for the area being
accessed (8-bit access space or 16-bit access space), the data size, and endian format when
accessing external address space.
(1)
With the 8-bit access space, the lower byte data bus (D7 to D0) is always used for access. The
amount of data that can be accessed at one time is one byte: a word access is performed as two
byte accesses, and a longword access, as four byte accesses.
Figures 8.10 and 8.11 illustrate data alignment control for the 8-bit access space. Figure 8.10
shows the data alignment when the data endian format is specified as big endian. Figure 8.11
shows the data alignment when the data endian format is specified as little endian.
Longword
8-Bit Access Space
Data
Size
Byte
Word
Figure 8.10 Access Sizes and Data Alignment Control for 8-Bit Access Space
Endian and Data Alignment
Access
Address
n
n
n
Access
Count
1
2
4
(Big Endian)
Bus
Cycle
1st
1st
2nd
1st
2nd
3rd
4th
Data Size
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Rev. 2.00 Sep. 16, 2009 Page 199 of 1036
Section 8 Bus Controller (BSC)
D15
LHWR/LUB
Strobe signal
REJ09B0414-0200
Data bus
D8 D7
RD
15
31
23
15
7
7
7
LLWR/LLB
D0
24
16
0
8
0
8
0
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