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參數(shù)資料
| 型號(hào)： | UPD17225 |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁(yè)數(shù)： | 11/84頁(yè) |
| 文件大?。?/td> | 393K |
| 代理商： | UPD17225 |
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μ
PD17225, 17226, 17227, 17228
11
Data Sheet U12643EJ2V0DS00
2. MEMORY SPACE
2.1 Program Counter (PC)
The program counter (PC) specifies an address of the program memory (ROM).
The program counter is an 11/12/13-bit binary counter as shown in Figure 2-1.
Its contents are initialized to address 0000H at reset.
Figure 2-1. Configuration of Program Counter
MSB
Page
PC12
PC10
PC9
PC8
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
LSB
PC11
PC ( PD17225)
PC ( PD17226)
PC ( PD17227, 17228)
μ
2.2 Program Memory (ROM)
The configuration of the program memory is as follows:
Part Number
Capacity
Address
μ
PD17225
2048
×
16 bits
0000H-07FFH
μ
PD17226
4096
×
16 bits
0000H-0FFFH
μ
PD17227
6144
×
16 bits
0000H-17FFH
μ
PD17228
8192
×
16 bits
0000H-1FFFH
The program memory stores a program, interrupt vector table, and fixed data table.
The program memory is addressed by the program counter.
Figure 2-2 shows the program memory map. The entire range of the program memory can be addressed by the BD
addr, BR @AR, CALL @AR, MOVT DBF, and @AR instructions. Note, however, that the subroutine entry addresses that
can be specified by the CALL addr instruction are from 0000H to 07FFH.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD17225CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17225MC | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17226 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17226CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17226GT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD17225CT | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17225CT-XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| UPD17225GT | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17225GT-XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|4-BIT|UPD17K CPU|CMOS|SOP|28PIN|PLASTIC |
| UPD17225MC | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
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