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參數資料
型號: W742C814
廠商: WINBOND ELECTRONICS CORP
元件分類: 4位微控制器
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述: 4位單片機的小型通用紅外遙控器
文件頁數: 33/46頁
文件大小: 704K
代理商: W742C814
W742C814
Publication Release Date: February 12, 2003
- 33 -
Revision A2
The LCDON instruction turns the LCD display on (even in HOLD mode), and the LCDOFF instruction
turns the LCD display off. At initial reset, all the LCD segments are unlit. When the initial reset state
ends, the LCD display is turned off automatically. To turn on the LCD display, the instruction LCDON
must be executed.
6.21.1 LCD RAM addressing method
There are 32 LCD RAMs (LCDR00 – LCDR1F) that should be indirectly addressed. The LCD RAM
pointer (LP) is used to point to the address of the wanted LCD RAM. The LP is organized as 6-bit
binary register. The MOV LPL, R and MOV LPH, R instructions can load the LCD RAM address to the
LP from R. The MOV @LP, R and MOV R, @LP instructions can access the pointed LCD RAM
content.
6.21.2 The output waveforms for the LCD driving mode
1/3 bias 1/4 duty Lighting System (Example)
Normal Operating Mode
COM0
VDD2
VDD1
VSS
VDD3
VDD2
VDD1
VSS
VDD3
COM1
COM2
VDD2
VDD1
VSS
VDD3
VDD2
VDD1
VSS
VDD3
COM3
VDD2
VDD1
VSS
VDD3
VDD2
VDD1
VSS
VDD3
LCD driver
outputs for
only seg. on
COM0 side
being lit
LCD driver
outputs for
only seg. on
COM1 side
being lit
相關PDF資料
PDF描述
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
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相關代理商/技術參數
參數描述
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W742E 制造商:WINBOND 制造商全稱:Winbond 功能描述:4 BIT MICROCONTROLLER