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參數(shù)資料
型號(hào)： W921F840
廠商： WINBOND ELECTRONICS CORP
英文描述： 4-Bit Microcontroller(4位的微控制器)
中文描述： 4位微控制器（第4位的微控制器）
文件頁數(shù)： 1/68頁
文件大小： 451K
代理商： W921F840
W921F840
4-BIT MICROCONTROLLER
Publication Release Date: October 1997
- 1 -
Revision A1
Table of Contents--
1. GENERAL DESCRIPTION.........................................................................................................................3
2. FEATURES.................................................................................................................................................3
3. PIN CONFIGURATION...............................................................................................................................6
40-pin DIP.................................................................................................................................................6
48-pin QFP ...............................................................................................................................................7
4. PIN DESCRIPTION.....................................................................................................................................8
5. BLOCK DIAGRAM....................................................................................................................................10
6. FUNCTION 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.............................................................................................................15
6.2.3 Working Register Area.........................................................................................................15
6.3 Internal Oscillator Circuit ..................................................................................................................16
6.4 Initial State.......................................................................................................................................17
6.5 Input/Output .....................................................................................................................................17
6.5.1 Normal/Special Function Selection of I/O.............................................................................18
6.5.2 Pull High and Open Drain Control of I/O...............................................................................19
6.6 Serial Port........................................................................................................................................22
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....................................................................................................................................29
6.11.3 TM2....................................................................................................................................32
6.11.4 TM3....................................................................................................................................34
6.11.5 Arbitrary Waveform Generator...........................................................................................35
6.12 Interrupt..........................................................................................................................................35
6.12.1 Interrupt Control Register ...................................................................................................36
6.12.2 Interrupt Enable Flag..........................................................................................................37
6.13 Operating Mode.............................................................................................................................37
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