Datasheet > HT1647_05

HT1647_05

更新时间： 2024-01-06 20:20:41

品牌	Logo	应用领域
台湾合泰/盛群 - HOLTEK		控制器
页数	文件大小	规格书
17页	188K
描述
4-Level Gray Scale 64x16 LCD Controller for I/O MCU

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HT1647_05 数据手册

HT1647

4-Level Gray Scale 64´16 LCD Controller for I/O MCU

Technical Document

FAQs

Application Note

Features

Operating voltage: 2.7V~5.2V

R/W address auto increment

Built-in 32kHz RC oscillator

Built-in buzzer driver (2kHz/4kHz)

External 32.768kHz crystal oscillator or 32kHz fre-

Power down command reduces power consumption

Software configuration feature

quency source input

Standby current: < 1mA at 3V, < 2mA at 5V

Data mode and Command mode instructions

Three data accessing modes

Internal resistor type: 1/5 bias or 1/4 bias, 1/16 duty

Two selectable LCD frame frequencies: 89Hz or

Provides VLCD pin to adjust LCD operating voltage

Provides three kinds of bias current programming

170Hz

Max. 64´16 patterns, 64 segments and 16 commons

Control of TN-type, STN-type LCDs and ECB-type

LCDs

Built-in bit-map display RAM: 2048 bits (=64´16´2

bits)

Four-level gray scale output for TN-type, STN-type

LCDs panel

Built-in internal resistor type bias generator

Four-color output for ECB-type LCDs panel

100-pin QFP package and in chip form

Six-wire interface (four data wires)

Eight kinds of time base/WDT selection

Time base or WDT overflow output

Applications

Leisure products

Cellular phone

Games

Global positioning system

Consumer electronics

Personal digital assistant

General Description

HT1647 is a peripheral device specially designed for I/O

type MCU used to expand the display capability. The

max. display segment of the device are 1024 patterns

(64 segments and 16 commons). It also supports four

data bits interface, buzzer sound, Watchdog Timer or

time base timer functions. The HT1647 is a memory

mapping and multi-function LCD controller. Since the

HT1647 can control ECB-type (Electrically Controlled

Birefringence) LCDs in addition to current TN-type

(Twisted Nematic) or STN-type (Super Twisted Ne-

matic) LCDs, it can support 4-color display as well as

4-level gray scale display. It displays 4-level gray scale

output when the HT1647 drives a TN-type, STN-type

LCDs. It displays four color output when the HT1647

drives an ECB-type. HT1647 uses PWM (Pulse Width

Modulation) technique. The software configuration fea-

ture of the HT1647 make it suitable for multiple LCD ap-

plications including LCD modules and display

subsystems. Only six lines (CS, WR, DB0~DB3) are re-

quired for the interface between the host controller and

the HT1647.

Rev. 1.30

November 10, 2005

12 3 4 5 6 7...17

中文翻译

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