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參數(shù)資料
| 型號： | 6P8A |
| 廠商： | NEC Corp. |
| 英文描述： | MOS INTEGRATED CIRCUIT 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION |
| 中文描述： | 馬鞍山集成電路4位單片機(jī)的紅外遙控傳輸 |
| 文件頁數(shù)： | 17/95頁 |
| 文件大小： | 692K |
| 代理商： | 6P8A |
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17
μ
PD6P8, 6P8A, 6P8B
Data Sheet U17848EJ3V0DS
3.6 Data Pointer (DP): 12 Bits
The ROM data table can be referenced by setting the ROM address in the data pointer to call the ROM contents.
The lower 8 bits of the ROM address are specified by R0 of the data memory; and the higher 4 bits by bits 4
to 7 of the P3 register (CR0).
After reset, the pointer contents become 000H.
Figure 3-5. Data Pointer Configuration
3.7 Accumulator (A): 4 Bits
The accumulator, which refers to a register consisting of 4 bits, plays a leading role in performing various
operations.
After reset, the accumulator contents are left undefined.
Figure 3-6. Accumulator Configuration
A
3
A
2
A
1
A
0
A
3.8 Arithmetic and Logic Unit (ALU): 4 Bits
The arithmetic and logic unit (ALU), which refers to an arithmetic circuit consisting of 4 bits, executes simple
(mainly logical) operations.
R
00
DP
9
DP
8
DP
7
DP
6
DP
5
DP
4
DP
3
DP
2
DP
1
DP
0
R
10
R0
b
4
b
5
P3
register
b
6
P
3
DP
10
0
b
7
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| 6P8B | 制造商:NEC 制造商全稱:NEC 功能描述:MOS INTEGRATED CIRCUIT 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION |
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