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參數資料
| 型號： | W741C250 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| 中文描述： | 4-BIT, MROM, 4.19 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 14 X 20 MM, QFP-64 |
| 文件頁數： | 2/88頁 |
| 文件大小： | 496K |
| 代理商： | W741C250 |
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W741C250
- 2 -
GENERAL DESCRIPTION
The W741C250 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, a divider, a 24
×
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 W741C250 operates on low voltage and very low current and
has two power reduction modes, hold mode and stop mode, which help to minimize power dissipation.
The W741C250 is suitable for remote controllers, watches and clocks, multiple I/O products,
keyboard controllers, speech synthesis LSI controllers, and other products.
FEATURES
Operating voltage: 2.2V to 5.5V (LCD drive voltage: 3.0V or 4.5V)
Operating frequency up to 4 MHz
Crystal/RC oscillation circuit selectable by code option for system clock
High-frequency clock (400 KHz to 4 MHz) or low-frequency clock (32.768 KHz) for crystal mode by
code option
Memory
2048
×
16 bit program ROM (including 2K
×
4 bit look-up table)
128
×
4 bit data RAM (including 16 working registers)
24
×
4 LCD data RAM
21 input/output pins
Ports for input only: 2 ports/8 pins
Input/output ports: 2 ports/8 pins
Port for output only: 1 port /4 pins (high sink current for LED driving)
MFP output pin: 1 pin (MFP)
Power-down mode
Hold function: no operation (except for oscillator)
Stop function: no operation (including oscillator)
Five types of interrupts
Three internal interrupts (Divider 0, Timer 0, Timer 1)
Two external interrupts (Port RC and
INT
pin)
LCD driver output
24 segment
×
4 common
Static, 1/2 duty (1/2 bias), 1/3 duty (1/2 or 1/3 bias), 1/4 duty (1/3 bias) driving mode can be
selected
LCD driver output pins can be used as DC output port by code option
相關PDF資料 |
PDF描述 |
|---|---|
| W741C260 | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| W741E20X | 4-BIT FLASH MICROCONTROLLER |
| W741E260 | 4-BIT FLASH MICROCONTROLLER |
| W741L260 | 4-BIT MICROCONTROLLER |
| W742C810 | 4-BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W741C260 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W741E200 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| W741E201 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT FLASH MICROCONTROLLER |
| W741E202 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT FLASH MICROCONTROLLER |
| W741E203 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT FLASH MICROCONTROLLER |
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