參數資料
型號: μPD703008
廠商: NEC Corp.
英文描述: 16/32 Bit RISC Microcontrollers(16/32位RISC微控制器)
中文描述: 16/32位RISC微控制器(16/32位的RISC微控制器)
文件頁數: 29/141頁
文件大?。?/td> 374K
代理商: ΜPD703008
CHAPTER 4 ADDRESS SPACE
The V850 family supports a 4-GB linear address space. Both memory and I/O are mapped to this address space
(
memory-mapped I/O
). The V850 family outputs 32-bit addresses to the memory and I/O. The maximum address
is 2
32
–1.
Byte ordering is little endian. Byte data allocated at each address is defined with bit 0 as LSB and bit 7 as MSB.
In regards to multiple-byte data, the byte with the lowest address value is defined to have the LSB and the byte with
the highest address value is defined to have the MSB.
Data consisting of 2 bytes is called a half-word, and 4-byte data is called a word. In this User’s Manual, data
consisting of 2 or more bytes is illustrated as below, with the lower address shown on the right and the higher address
on the left.
Data
0
7
Address
A
8
15
A+1
Data
0
7
Address
A
8
15
A+1
Data
0
7
Address
A
16
23
A+2
24
31
A+3
Byte of address A
Half-word at address A
Word at address A
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17
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