HD66753
(168 x 132-dot Graphics LCD Controller/Driver with
Bit-operation Functions)
ADE-207-347(Z)
Rev. 1.0
Jan. 31. 2003
Description
The HD66753, dot-matrix graphics LCD controller and driver LSI, displays 168-by-132-dot graphics for
four monochrome grayscales. When 12-by-13-dot size fonts are used, up to 13 lines
x
11 characters (143
characters) can be simultaneously displayed. Since the HD66753 incorporates bit-operation functions and a
16-bit high-speed bus interface, it enables efficient data transfer and high-speed rewriting of data in the
graphics RAM.
The HD66753 has various functions for reducing the power consumption of an LCD system, such as low-
voltage operation of 1.7 V/min., a step-up circuit to generate a maximum of seven-times the LCD drive
voltage from the input-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
HD66753 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.
Features
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168
脳
132-dot graphics display LCD controller/driver for four monochrome grayscales
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16-/8-bit high-speed bus interface
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Clock-synchronized serial interface (transfer rate: 10 MHz max.)
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I2C bus interface (transfer rate: 1.3 MHz max.)
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Bit-operation functions for graphics processing:
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Write-data mask function in bit units
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Bit rotation function
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Bit logic-operation function
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Low-power operation supports:
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Vcc = 1.7 to 3.6 V (low voltage)
錚?/div>
V
LPS
= 5 to 19.5 V (liquid crystal drive voltage)
錚?/div>
Internal three-, five-, six-, or seven-times step-up circuit for liquid crystal drive voltage to be
selected by software
錚?/div>
128-step contrast adjuster and voltage followers to decrease direct current flow in the LCD drive
bleeder-resistors
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