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HT1647(100QFP)A PDF预览

HT1647(100QFP)A

更新时间： 2024-11-18 23:56:43
品牌 Logo 应用领域
其他 - ETC 控制器
页数 文件大小 规格书
22页 187K
描述
Controller Miscellaneous - Datasheet Reference

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中文翻译

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HT1647(100QFP)A 数据手册

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HT1647  
4-Level Gray Scale 64´16 LCD Controller for I/O mC  
Features  
·
·
·
Operating voltage: 2.7V~5.2V  
Built-in 32kHz RC oscillator  
·
·
Built-in buzzer driver (2kHz/4kHz)  
Power down command reduces power  
consumption  
External 32.768kHz crystal oscillator or  
32kHz frequency source input  
Standby current: < 1mA at 3V, < 2mA at 5V  
Internal resistor type: 1/5 bias or 1/4  
bias, 1/16 duty  
·
·
Software configuration feature  
Data mode and Command mode  
instructions  
·
·
·
·
Three data accessing modes  
Provides VLCD pin to adjust LCD operating  
voltage  
·
·
·
Two selectable LCD frame frequencies:  
89Hz or 170Hz  
·
·
·
Provides three kinds of bias current  
programming  
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  
Six-wire interface (four data wires)  
Eight kinds of time base/WDT selection  
Time base or WDT overflow output  
R/W address auto increment  
·
·
Four-color output for ECB-type LCDs panel  
100-pin QFP and in chip form  
Applications  
·
·
·
Leisure products  
Games  
Personal digital assistant  
·
·
·
Cellular phone  
Global positioning system  
Consumer electronics  
General Description  
HT1647 is a peripheral device specially de-  
signed for I/O type mC used to expand the dis-  
play capability. The max. display segment of  
the device are 1024 patterns (64 segments and  
16 commons). It also supports four data bits in-  
terface, 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 (Elec-  
trically Controlled Birefringence) LCDs in ad-  
dition to current TN-type (Twisted Nematic) or  
STN-type (Super Twisted Nematic) 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) tech-  
nique. The software configuration feature of  
the HT1647 make it suitable for multiple LCD  
applications including LCD modules and dis-  
play subsystems. Only six lines (CS, WR,  
DB0~DB3) are required for the interface be-  
tween the host controller and the HT1647.  
Rev. 1.00  
1
June 1, 2001  
1234567...22

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