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參數(shù)資料
| 型號： | GDM12864A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Liquid Crystal Display Module |
| 中文描述： | 液晶顯示模塊 |
| 文件頁數(shù)： | 20/22頁 |
| 文件大?。?/td> | 198K |
| 代理商： | GDM12864A |
64CH Segment Driver For Dot Matrix LCD
18
1998 Intech LCD Group Ltd.
6.
Display On/Off Flip-Flop
The display on/off flip-flop makes on/off the liquid crystal display. When flip-flop is reset (logical low),
selective voltage or non selective voltage appears on segment output terminals. When flip-flop is set
(logic high), non selective voltage appears on segment output terminals regardless of display RAM data.
The display on/off flip-flop can changes status by instruction. The display data at all segment disappear
while RSTB is low.
The status of the flip-flop is output to DB5 by status read instruction.
The display on/off flip-flop synchronized by CL signal.
7.
X Page Register
X page register designates pages of the internal display data RAM.
Count function is not available. An address is set by instruction.
8.
Y address counter
Y address counter designates address of the internal display data RAM. An address is set by instruction
and is increased by 1 automatically by read or write operations of display data.
9.
Display Data RAM
Display data RAM stores a display data for liquid crystal display. To indicate on state dot matrix of
liquid crystal display , write datra1. The other way , off state, writes 0.
Display data RAM address and segment output can be controlled by ADC signal.
ADC=H => Y-address 0: S1~Y address 63: S64
ADC=L => Y-address 0: S64~Yaddress 63: S1
ADC terminal connect the V
DD
or V
SS
.
10.
Display Start Line Register
The display start line register indicates of display data RAM to display top line of liquid crystal display.
Bit data (DB<0.5>) of the display start line set instruction is latched in display start line register.
Latched data is transferred to the Z address counter while FRM is high, presetting the Z address
counter.
It is used for scrolling of the liquid crystal display screen.
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