Datasheet > HD66740

HD66740

更新时间： 2024-02-19 19:11:58

品牌	Logo	应用领域
日立 - HITACHI		驱动器控制器
页数	文件大小	规格书
95页	810K
描述
112 x 80-dot Graphics LCD Controller/Driver

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HD66740 数据手册

HD66740

(112 x 80-dot Graphics LCD Controller/Driver)

Rev 1.0

August, 2001

Description

The HD66740, 112-by-80 dot-matrix graphics LCD controller and driver LSI, displays graphics such as

text, kanji and pictograms. It can be configured to drive a dot-matrix liquid crystal under the control of the

microprocessor connected via the clock-synchronized serial or 4/8-bit bus. The HD66740 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 HD66740 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 HD66740 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 graphics LCD

112 x 80-dot display

Fixed display of graphics icons (pictograms)

Low-power operation support:

Vcc = 1.8 to 3.6 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-resistors

Power-save functions such as the standby mode and sleep mode supported

Programmable drive duty ratios and bias values displayed on LCD

High-speed clock-synchronized serial interface (serial transfer rate: 5 MHz max.)

I2C bus interface

•

High-speed 4-/8-bit bus interface capability

112-segment × 80-common liquid crystal display driver

1,120-byte (112 × 80 dots) character generator RAM

12 3 4 5 6 7...95

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