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HD66765 Datasheet(PDF) 1 Page - Hitachi Semiconductor |
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HD66765 Datasheet(HTML) 1 Page - Hitachi Semiconductor |
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1 / 71 page  —PRELIMINARY— Preliminary Specification 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 |
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Similar Description - HD66765 |
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