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參數(shù)資料
| 型號(hào)： | UPD17243MC-xxx-5A4 |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| 中文描述： | 4位單片微控制器的小型通用兩用紅外遙控遞質(zhì) |
| 文件頁(yè)數(shù)： | 15/102頁(yè) |
| 文件大?。?/td> | 461K |
| 代理商： | UPD17243MC-XXX-5A4 |
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15
Data Sheet U15002EJ1V0DS
μ
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
2.
MEMORY SPACE
2.1
Program Counter (PC)
The program counter (PC) specifies an address of the program memory (ROM).
The program counter consists of an 11/12/13-bit binary counter and a 1-bit segment register (SGR) as shown
in Figure 2-1.
Its contents are initialized to address 0000H at reset.
Figure 2-1. Configuration of Program Counter
Page
PC ( PD17240)
MSB
LSB
SGR
PC
12
PC
11
PC
10
PC
9
PC
8
PC
7
PC
6
PC
5
PC
4
PC
3
PC
2
PC
1
PC
0
PC ( PD17241)
PC ( PD17242, 17243)
PC ( PD17244, 17245, 17246)
2.1.1
Segment register (SGR)
The segment register specifies a segment of the program memory.
Table 2-1 shows the relationship between the segment register and program memory.
Table 2-1. Relationship Between Segment Register and Program Memory
Value of Segment Register
Segment of Program Memory
0
Segment 0
1
Segment 1
The segment register is set when the following instructions are executed.
BR @AR
CALL @AR
SYSCAL entry
相關(guān)PDF資料 |
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| UPD17244MC-xxx-5A4 | 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17245MC-xxx-5A4 | 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17246MC-xxx-5A4 | 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD1724x | 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| UPD17244 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17244MC-XXX-5A4 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17245 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17245MC-XXX-5A4 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17246 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontrollers for Remote Controllers Pamphlet | Pamphlet[11/2002] |
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