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參數(shù)資料
| 型號： | W742S81A |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4-BIT, FLASH, 3.58 MHz, MICROCONTROLLER, PQFP100 |
| 文件頁數(shù)： | 1/47頁 |
| 文件大小： | 242K |
| 代理商： | W742S81A |
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W742S81A
4-BIT MICROCONTROLLER
Publication Release Date: March 2003
Revision A1
- 1 -
1. GENERAL DESCRIPTION
The W742S81A is a high-performance 4-bit microcontroller (
μ
C) that provides an LCD driver. The device
contains a 4-bit ALU, two 8-bit timers, two dividers (for two oscillators) in dual-clock operation, a 40
×
4
LCD driver, six 4-bit I/O ports (including 1 output port for LED driving), and one channel DTMF
generator. There are also five interrupt sources and 16-levels subroutine nesting for interrupt applications.
The W742S81A operates on very low current and has two power reduction modes, that is the dual-clock
slow operation and STOP mode, which help to minimize power dissipation.
2. FEATURES
Operating voltage: 2.4V – 5.5V
Dual-clock operation or single-clock operation (By option)
Main-oscillator
Connect to 3.58MHz crystal or 400KHz that can be selected by option code
Crystal or RC oscillator can be selected by code option
Sub-oscillator
Connect to 32768 Hz crystal only
Memory
16384 x 16 bits program electrical erasable EPROM (including 64K x 4 bit look-up table)
2048 x 4 bits data RAM (including 16 nibbles x 16 pages working registers)
40 x 4 LCD data RAM
24 input/output pins
Port for input only: 1 ports/4 pins(RC)
Input/output ports: 3 ports/12 pins(RA, RB & RD)
High sink current output port for LED driving: 1 port /4 pins(RE)
Port for output only: 1 port/ 4 pins(RF)
Power-down mode
Hold function: no operation ( main-oscillator and sub-oscillator still operate)
Stop function: no operation ( main-oscillator and sub-oscillator are stopped)
Dual-clock slow operation mode: system is operated by the sub-oscillator (F
OSC
=Fs and Fm is
stopped)
Five types of interrupts
Four internal interrupts (Divider0, Divider1, Timer 0, Timer 1)
One external interrupts (RC Port)
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| W741E202 | 4-BIT FLASH MICROCONTROLLER |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| W742S82A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT TELEPHONE CONTROLLER |
| W7-48D12 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48D15 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48D5 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48S12 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
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