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參數資料
| 型號： | W741C240 |
| 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, MICROCONTROLLER, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁數： | 1/40頁 |
| 文件大小： | 432K |
| 代理商： | W741C240 |
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W741C240
4-BIT MICROCONTROLLER
Publication Release Date: May 1999
- 1 -
Revision A1
GENERAL DESCRIPTION
The W741C240 is a high-performance 4-bit microcontroller (
μ
C) that provides an LCD driver. The
device contains a 4-bit ALU, a 8-bit timers, a divider, a 24
×
4 LCD driver, and three 4-bit I/O ports.
There are also three interrupt sources and 8-level subroutine nesting for interrupt applications. The
W741C240 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 W741C240 is suitable for caculators, simple watches and clocks, multiple I/O products, keyboard
controllers, speech synthesis LSI controllers, and other products.
FEATURES
Operating voltage: 2.4V to 3.6V (LCD drive voltage: 3.0V or 4.5V)
Crystal/RC oscillation circuit selectable by code option for system clock
Crystal oscillator: 32.768 KHz only
RC oscillator: 1 MHz (maximum)
High-frequency (400 KHz to 1 MHz) or low-frequency (below 400 KHz) oscillation option must
be determined by the code option.
In RC mode, attention must be paid to the high/low frequency oscillation option, because the
LCD driver frequency is related to this option.
Memory
2048
×
16 bit program ROM (shared with 2K
×
4 bit look-up table)
64
×
4 bit data RAM (shared with 16 working registers)
24
×
4 LCD data RAM
13 input/output pins
Ports for input only: 1 port/4 pins
Input/output ports: 2 ports/8 pins
MFP output pin: 1 pin (MFP)
Power-down mode
Hold function: no operation (except for oscillator)
Stop function: no operation (including oscillator)
Three types of interrupts
Two internal interrupts (Divider 0, Timer 1)
One external interrupts (Port RC)
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
相關PDF資料 |
PDF描述 |
|---|---|
| W741C250 | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| 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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W741C250 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| 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 |
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