參數(shù)資料
型號(hào): HD66728
廠商: Hitachi,Ltd.
英文描述: 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點(diǎn)圖形LCD控制器)
中文描述: 112 × 80點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器(112 × 80點(diǎn)圖形液晶顯示控制器)
文件頁數(shù): 1/138頁
文件大?。?/td> 2158K
代理商: HD66728
1
HD66728
(112 x 80-dot Graphics LCD Controller/Driver)
ADE-207-312(Z)
Rev 1.0
Dec 3rd, 1998
Description
The HD66728, 112-by-80 dot-matrix graphics LCD controller and driver LSI, displays characters such as
alphanumerics, katakana, hiragana and symbols as well as graphics such as kanji and pictograms. It can be
configured to drive a dot-matrix liquid crystal display and control key scan functions under the control of
the microprocessor connected via the clock-synchronized serial or 4/8-bit bus. The HD66728 has a smooth
vertical scroll display and a double-height display for the remaining bit map areas. It fixed-displays a part
of the graphics icons so that the user can easily see a variety of information.
The HD66728 has various functions to reduce the power consumption of an LCD system such as low-
voltage operation of 1.8 V min., a booster to generate maximum five-times LCD drive voltage from the
supplied voltage, and voltage-followers to decrease the direct current flow in the LCD drive bleeder-
resistors. Combining these hardware functions with software functions such as standby and sleep modes
allows fine power control. The HD66728 is suitable for any portable battery-driven product requiring long-
term driving capabilities such as cellular phones, pagers, or electronic wallets.
Features
Control and drive of a character and graphics LCD
112 x 80-dot graphics and 16-character x 10-line display
Combined display (superimposed display) of graphics and characters
Fixed display of graphics icons (pictograms)
Control up to a 4
×
8 (32-key) matrix key scan.
3 general ports built-in
Low-power operation support:
Vcc = 1.8 to 5.5 V (low voltage)
V
LCD
= 4.5 to 15.0 V (liquid crystal drive voltage)
Triple, quadruple, or five-times booster for liquid crystal drive voltage
64-step contrast adjuster and voltage followers to decrease direct current flow in the LCD drive
bleeder-resistorsPower-save functions such as the standby mode and sleep mode supported
Power-save functions such as the standby mode and sleep mode supported
Wake-up feature using key scan interrupt
Programmable drive duty ratios and bias values displayed on LCD
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