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參數(shù)資料
| 型號： | UPD17227 |
| 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位單片機的小型通用紅外遙控器 |
| 文件頁數(shù)： | 19/84頁 |
| 文件大?。?/td> | 393K |
| 代理商： | UPD17227 |
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μ
PD17225, 17226, 17227, 17228
19
Data Sheet U12643EJ2V0DS00
2.4.4
Data buffer (DBF)
The data buffer on the addresses 0CH to 0FH of data memory is used for data transfer to and from peripheral hardware
and for storage of data during table reference.
(1) Functions of the data buffer
The data buffer has two major functions: a function to transfer to and from hardware and a function to read
constant data from the program memory (for table reference). Figure 2-7 shows the relationship between the
data buffer and peripheral hardware.
Figure 2-7. Data Buffer and Peripheral Hardware
Data buffer
(DBF)
Internal bus
Program memory
(ROM)
Constant data
Peripheral
address
Peripheral hardware
8-bit timer
(TMC, TMM)
Carrier generator for
remote controller
(NRZLTMM, NRZHTMM)
Address register (AR)
05H, 06H
03H, 04H
40H
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD17227CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17227MC | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17228 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17228CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17228GT | 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 |
|---|---|
| UPD17227CT | 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 |
| UPD17227CT-XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| UPD17227GT | 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 |
| UPD17227GT-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 |
| UPD17227MC | 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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