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HD66765TB0

更新时间： 2024-11-18 23:13:51
品牌 Logo 应用领域
日立 - HITACHI 驱动器显示控制器微控制器和处理器
页数 文件大小 规格书
71页 261K
描述
396-channel Segment Driver with Internal RAM for 4096-color Displays

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HD66765TB0 数据手册

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—PRELIMINARY—  
HD66765  
396-channel Segment Driver with Internal RAM for 4096-color  
Displays  
Target Specification  
Rev.0.1  
January, 2001  
Description  
The HD66765, 396-channel segment driver LSI, displays 132RGB-by-176-dot graphics on STN  
displays in 4096 colors. It is for driving STN color LCD displays to a maximum of 132RGB by 176  
dots, in combination with the HD66764 common driver. The HD66765’s bit-operation functions, 16-  
bit high-speed bus interface, and high-speed RAM-write functions enable efficient data transfer and  
high-speed rewriting of data to the graphics RAM.  
The HD66765 and HD66764 have various functions for reducing the power consumption of an LCD  
system. The HD66765 has a low-voltage operation (1.8 V min.) and an internal RAM to display a  
maximum of 132RGB-by-176-dot color, and the HD66764 has a step-up circuit to generate the LCD-  
drive voltage, a bleeder resistor for the drive interface with the LCD, and voltage-followers. Since the  
HD66765 incorporates a circuit that interfaces with the HD66764, it can set instructions for the  
HD66764. In addition, precise power control can be achieved by combining these hardware functions  
with software functions, such as a partial display that only requires a low drive-voltage duty, and  
standby and sleep modes. This LSI is suitable for any medium-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  
•
132RGB x 176-dot graphics display LCD controller/driver for 4,096 STN colors (when HD66764  
is used)  
•
•
•
•
•
Low-voltage drive and flickerless PWM grayscale drive  
16-/8-bit high-speed bus interface and serial peripheral interface (SPI)  
High-speed burst-RAM write function  
Writing to a window-RAM address area by using a window-address function  
Bit-operation functions for graphics processing:  
Write-data mask function in bit units  
Logical operation in pixel unit and conditional write function  
1234567...71

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