- 您現在的位置：買賣IC網 > PDF目錄363894 > W742C813 (WINBOND ELECTRONICS CORP) 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER PDF資料下載
參數資料
| 型號： | W742C813 |
| 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, MROM, 3.58 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 20 MM, 2.75 MM HEIGHT, QFP-100 |
| 文件頁數： | 41/56頁 |
| 文件大小： | 455K |
| 代理商： | W742C813 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁當前第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁
W742E/C813
Publication Release Date: December 2000
- 41 -
Revision A1
5.25 LCD Controller/Driver
The W742E/C813 can directly drive an LCD with 40 segment output pins and 16 common output pins
for a total of 40
×
16 dots. The LCD driving mode is 1/5 bias 1/8 or 1/16 duty. The alternating frequency
of the LCD can be set as Fw/16, Fw/32, Fw/64, or Fw/128. The structure of the LCD alternating
frequency (F
LCD
) is shown in the Figure 5-17.
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Fw
Selector
Fw/128
Fw/64
Fw/32
Fw/16
Sub-oscillator clock
F
LCD
Figure 5-17 LCD alternating frequency (FLCD) circuit diagram
Fw = 32.768 KHz, the LCD frequency is as shown in the table below.
Table 5 The relartionship between the F
LCD
and the duty cycle
LCD Frequency
1/8 Duty
1/16 Duty
Fw/128 (256 Hz)
32
-
Fw/64 (512 Hz)
64
32
Fw/32 (1024 Hz)
128
64
Fw/16 (2048 Hz)
-
128
Corresponding to the 40 LCD drive output pins, there are 160 LCD data RAM segments. Instructions
such as
MOV LPL,R, MOV LPH,R, MOV @LP,R,
and
MOV R,@LP
are used to control the LCD data
RAM. The data in the LCD data RAM are transferred to the segment output pins automatically without
program control. When the bit value of the LCD data RAM is "1," the LCD is turned on. When the bit
value of the LCD data RAM is "0," LCD is turned off. The contents of the LCD data RAM (LCDR) are
sent out through the segment0 to segment39 pins by a direct memory access. The relation between
the LCD data RAM and segment/common pins is shown below.
相關PDF資料 |
PDF描述 |
|---|---|
| W742C814 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| W742E813 | 4-BIT MICROCONTROLLER |
| W742C81A | 4-BIT MICROCONTROLLER |
| W742S819 | 4-BIT TELEPHONE CONTROLLER |
| W742S81A | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W742C814 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4 BIT MICROCONTROLLER |
| W742C816 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| W742C818 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| W742C81A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W742CE811 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
發布緊急采購，3分鐘左右您將得到回復。