參數(shù)資料
型號(hào)： HD4074654H
廠商： Hitachi,Ltd.
英文描述： 4-Bit Single-Chip Microcomputer
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 90/109頁(yè)
文件大?。?/td> 430K
代理商： HD4074654H
HD404654 Series
90
Addressing Modes
RAM Addressing Modes
The MCU has three RAM addressing modes, as shown in figure 75 and described below.
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.
AP
9
AP
0
W
1
Y
0
W register
X register
Y register
RAM address
Register Direct Addressing
AP
9
AP
0
RAM address
Direct Addressing
d
9
d
0
2nd word of Instruction
Opcode
1st word of Instruction
AP
9
AP
0
RAM address
Memory Register Addressing
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
Figure 75 RAM Addressing Modes
相關(guān)PDF資料
PDF描述
HD4074654S 4-Bit Single-Chip Microcomputer
HD4046612 Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
HD40A46612 Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
HD40A4668 Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
HD40A4669 Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD4074654S 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD4074678H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074709C 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074709FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074709H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
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