Datasheet > HD66751S

HD66751S

更新时间： 2024-02-26 16:58:21

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HD66751S 数据手册

HD66751S

(128 x 128-dot Graphics LCD Controller/Driver with

Four-grayscale Functions)

ADE-207-340(Z)

Rev 1.0

June 2001

Description

The HD66751S, dot-matrix graphics LCD controller and driver LSI, displays 128-by-128-dot graphics for

four monochrome grayscales. Since the HD66751S incorporates bit-operation functions and a 16-bit high-

speed bus interface, it enables efficient data transfer and high-speed rewriting of data in the graphics RAM.

The following functions allow the user to easily see a variety of information: a smooth scroll display

function that fixed-displays a part of the graphics icons and perform vertical smooth scrolling of the

remaining bit-map areas, a double-height display function, and a hardware-supported window cursor

display function.

The HD66751S has various functions to reduce the power consumption of an LCD system such as low-

voltage operation of 1.7 V min., a booster to generate maximum seven-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 a partial display with low-

duty drive and standby and sleep modes, allows precise power control. The HD66751S is suitable for any

mid-sized or small portable battery-driven product requiring long-term driving capabilities, such as digital

cellular phones supporting a WWW browser, bidirectional pagers, and small PDAs.

Features

•

128 × 128-dot graphics display LCD controller/driver for four monochrome grayscales

Fixed display of graphics icons (pictograms)

16-/8-bit high-speed bus interface capability

Bit-operation functions for graphics processing incorporated:

Write-data mask function in bit units

Bit rotation function

Bit logic-operation function

•

Low-power operation support:

Vcc = 1.7 to 3.6 V (low voltage)

V_LCD= 5 to 16.5 V (liquid crystal drive voltage)

Two-, five-, six-, or seven-times booster for liquid crystal drive voltage (Software selection, on-chip)

12 3 4 5 6 7...108

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