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參數資料
| 型號： | W921C840 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-Bit Microcontroller(4位微控制器) |
| 中文描述： | 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁數： | 1/58頁 |
| 文件大小： | 449K |
| 代理商： | W921C840 |
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W921E840A/W921C840
4-BIT MICROCONTROLLER
Publication Release Date: July 1999
- 1 - Revision A3
Table of Contents-
1. GENERAL DESCRIPTION.........................................................................................................................3
2. FEATURES.................................................................................................................................................3
3. PIN CONFIGURATIONS.............................................................................................................................6
40-pin DIP..................................................................................................................................................6
48-pin QFP.................................................................................................................................................7
4. PIN DESCRIPTION.....................................................................................................................................9
5. BLOCK DIAGRAM....................................................................................................................................10
6. FUNCTIONAL DESCRIPTION .................................................................................................................11
6.1 ROM Memory Map ...........................................................................................................................11
6.2 RAM Memory Map............................................................................................................................12
6.2.1 Special Control Register Area.................................................................................................12
6.2.2 Stack Register Area................................................................................................................14
6.2.3 Working Register Area............................................................................................................15
6.3 Internal Oscillator Circuit ...................................................................................................................15
6.4 Initial State ........................................................................................................................................16
6.5 Input/Output ......................................................................................................................................17
6.5.1 Normal/Special Function Selection of I/O................................................................................17
6.5.2 Pull High and Open Drain Control of I/O .................................................................................19
6.6 Serial Port.........................................................................................................................................21
6.7 DTMF Generator...............................................................................................................................24
6.8 Beep Tone Generator.......................................................................................................................25
6.9 D/A Converter...................................................................................................................................26
6.10 Comparator.....................................................................................................................................27
6.11 Timer/Counter.................................................................................................................................28
6.11.1 TM0......................................................................................................................................28
6.11.2 TM1......................................................................................................................................30
6.11.3 TM2......................................................................................................................................32
6.11.4 TM3......................................................................................................................................34
6.11.5 Arbitrary Waveform Generator..............................................................................................35
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| W921E840A | 4-Bit Microcontroller(4位微控制器) |
| W921E843A | 4-BIT MICROCONTROLLER |
| W921C880 | 4-Bit Microcontroller(4位微控制器) |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W921C880 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| W921E400 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W921E400A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W921E840 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W921E840A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
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