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HD66766 fiches techniques PDF

Hitachi Semiconductor - 132 x 176-dot Graphics LCD Controller/Driver

Numéro de référence HD66766
Description 132 x 176-dot Graphics LCD Controller/Driver
Fabricant Hitachi Semiconductor 
Logo Hitachi Semiconductor 





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HD66766 fiche technique
HD66766
Rev. 1.0 / 30 November 2001
HD66766
(132 x 176-dot Graphics LCD Controller/Driver for 65K Colors)
Rev.1.0
November, 2001
Description
The HD66766, color-graphics LCD controller and driver LSI, displays 132-by-176-dot graphics for 65K
STN colors. A 16-bit high-speed bus interface and high-speed RAM write function enable efficient data
transfer and high-speed rewriting of data to the graphics RAM.
The HD66766 has various functions for reducing the power consumption of a LCD system, such as low-
voltage operation of 2.2 V/min., a step-up circuit to generate a maximum of 12-times the 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 HD66766
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, bi-directional pagers, and small
PDAs.
Features
132RGB x 176-dot graphics display LCD controller/driver for 65K STN colors
low voltage drive and flickerless PWM grayscale drive
16-/8-bit high-speed bus interface and Clock Synchronized Serial 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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