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參數資料
| 型號： | W541E |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 4BIT MICROCONTROLLER, 4K 】16 ROM, 256 】4 RAM 128 -DOT LCD |
| 中文描述： | 4位微控制器，4K的】16光盤，256】4內存128點LCD |
| 文件頁數： | 3/13頁 |
| 文件大小： | 181K |
| 代理商： | W541E |
W541E/C480 DATA SHEET
Publication Release Date: June 8, 2007
- 3 -
Revision A2
2. FEATURES
Operating voltage: 2.4V 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
Memory
4096
×
16 bit program ROM (including 4K
×
4 bit look-up table)
256
×
4 bit data RAM (including 16 working registers)
32
×
4 LCD data RAM
Single or Dual Clock Mode
Single (main oscillator only) or dual clock (both main and sub-oscilator) by mask option .
Dual-clock slow operation mode: system is operated by the sub-oscillator (F
OSC
= Fs and Fm
is stopped)
Sub-oscillator is only 32.768 KHz crystal for dual clock mode.
Main oscillator is crystal or RC oscillation by mask code option .
Main clock : High-frequency clock (400 KHz to 4 MHz) or low-frequency clock (32.768 KHz) is
selected by mask code option.
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 to drive LEDs)
MFP output pin: 1 pin (MFP)
Power-down mode
Hold function: no operation (except for oscillator)
Stop function: no operation
Five types of interrupts
Four internal interrupts (Divider 0, Divider 1, Timer 0, Timer 1)
One external interrupt (Port RC)
LCD driver output
32 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 ports; selectable by code option
MFP output pin
Output is software selectable as modulating or nonmodulating frequency
Works as frequency output specified by Timer 1
Two built-in 14-bit clock frequency divider circuit (divider 0 and divider 1)
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