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參數(shù)資料
| 型號： | W741E260 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT FLASH MICROCONTROLLER |
| 中文描述： | 4-BIT, FLASH, 4.19 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數(shù)： | 2/94頁 |
| 文件大小： | 554K |
| 代理商： | W741E260 |
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W741E260
- 2 -
GENERAL DESCRIPTION
The W741E260 is a high-performance 4-bit microcontroller (
μ
C) that provides an LCD driver and the
flash EEPROM for the program memory. The device contains a 4-bit ALU, two 8-bit timers, two
dividers (for two oscillators) in dual-clock operation, a 32
×
4 LCD driver, and five 4-bit I/O ports
(including 1 output port for LED driving). There are also five interrupt sources and 8-level subroutine
nesting for interrupt applications. The W741E260 operates on very low current and has three power
reduction modes, hold mode and stop mode in single-clock operation and the dual-clock slow
operation, which help to minimize power dissipation.
This chip is available for W741C250 and W741C260 bodies, which can be selected by option code.
The W741E260 is suitable for end product manufacturer engineering testing and earlier samples
before mass production.
FEATURES
Operating voltage: 2.4V to 5.5V (LCD drive voltage: 3.0V, or 4.5V)
Crystal/Ceramic oscillator: up to 4 MHz
RC oscillator: up to 4 MHz
Dual-clock operation is selected by code option
Main oscillator
Crystal or RC oscillation circuit can be selected by code option
In crystal mode, high-frequency (400 KHz to 4 MHz) or low-frequency (32.768 KHz) oscillation
should be selected by code option
In RC mode, attention must be paid to the high/low frequency oscillation option, because the LCD
driver frequency and the ROM code emulation time are related to this option.
Sub-oscillator
Connect to 32768 Hz crystal only
Used in dual-clock operation
Memory
2048 x 16-bit program flash EEPROM (including 2K x 4-bit look-up table)
128 x 4-bit data RAM (including 16 working registers)
32 x 4 LCD data RAM
21 input/output pins
Ports for input only: 2 ports/8 pins
Input/output ports: 2 ports/8 pins
High sink current for LED driving: 1 port/4 pins
MFP output pin: 1 pin (MFP)
Power-down mode
Hold function: no operation (excluding main oscillator and sub-oscillator)
Stop function: no operation (excluding sub-oscillator)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W741L250 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W741L260 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W7422-A | 制造商:Coilcraft Inc 功能描述:NOT RoHS. Transformer, for Motorola MC33374 |
| W742C(E)811 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-BIT MICROCONTROLLER |
| W742C0-DE-A1/B0/B8-HI | 制造商:Seoul Semiconductor 功能描述:P7 PURE WHITE - Tape and Reel |
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