參數(shù)資料
型號: HD4074094
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計算機)
中文描述: 4位單片機(4位單片微計算機)
文件頁數(shù): 82/101頁
文件大?。?/td> 610K
代理商: HD4074094
HD404054 Series/HD404094 Series
82
Addressing Modes
RAM Addressing Modes
The MCU has three RAM addressing modes, as shown in figure 64 and described below.
AP
9
AP
0
W
1
Y
0
W register
X register
Y register
RAM address
AP
9
AP
0
RAM address
d
9
d
0
2nd word of Instruction
Opcode
1st word of Instruction
AP
9
AP
0
RAM address
m
3
Opcode
Instruction
0
0
0
1
0
0
AP
8
AP
7
AP
AP
5
AP
4
6
AP
3
AP
2
AP
1
AP
AP
AP
AP
AP
AP
AP
AP
8
7
6
5
4
3
2
1
d
8
d
7
d
6
d
5
d
4
d
3
d
2
d
1
AP
8
AP
7
AP
6
AP
5
AP
4
AP
3
AP
2
AP
1
W
0
X
3
X
2
X
1
X
0
Y
3
Y
2
Y
1
m
2
m
1
m
0
Direct addressing
Memory register addressing
Register direct addressing
Figure 64 RAM Addressing Modes
Register Indirect Addressing Mode:
The contents of the W, X, and Y registers (10 bits in total) are used
as a RAM address.
Direct Addressing Mode:
A direct addressing instruction consists of two words. The first word contains
the opcode, and the contents of the second word (10 bits) are used as a RAM address.
Memory Register Addressing Mode:
The memory registers (MR), which are located in 16 addresses
from $040 to $04F, are accessed with the LAMR and XMRA instructions.
相關(guān)PDF資料
PDF描述
HD404052 4-Bit Single-Chip Microcomputer(4位單片微計算機)
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HD40A4054 4-Bit Single-Chip Microcomputer(4位單片微計算機)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD4074094H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074094S 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity
HD4074224FP01 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074224FP02 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS 4-bit Single-Chip Microcomputers with the same architecture as the HMCS400 Series
HD4074224FP03 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS 4-bit Single-Chip Microcomputers with the same architecture as the HMCS400 Series