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參數(shù)資料
| 型號(hào)： | UPD17147 |
| 廠商： | NEC Corp. |
| 英文描述： | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 小，通用4位單晶片微控制器 |
| 文件頁(yè)數(shù)： | 22/102頁(yè) |
| 文件大小： | 408K |
| 代理商： | UPD17147 |
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22
μ
PD17145(A1), 17147(A1), 17149(A1)
7. SYSTEM REGISTER (SYSREG)
The system register (SYSREG) is a register that directly controls the CPU, and is located on the data memory.
7.1 Configuration of System Register
Figure 7-1 shows the location of the system register on the data memory. As shown in this figure, the system
register is located at addresses 74H-7FH of the data memory.
Because the system register is located on the data memory, it can be manipulated by all the data memory
manipulation instructions. It is therefore possible to specify the system register as a general register.
Figure 7-1. Location of System Register on Data Memory
Figure 7-2 shows the configuration of the system register. As shown in this figure, the system register consists
of the following seven registers:
Address register
(AR)
Window register
(WR)
Bank register
(BANK)
Index register
(IX)
Data memory row address pointer
(MP)
General register pointer
(RP)
Program status word
(PSWORD)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
6
7
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
Data memory
(BANK0)
Column address
R
Port register
System register (SYSREG)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD17149GT | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149CTA1 | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147CT | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147CTA1 | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149 | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD17147CT | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147CTA1 | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147GT | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147GTA1 | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149 | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
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