ST
ST7066U
Dot Matrix LCD Controller/Driver
Sitronix
Features
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5 x 8 and 5 x 11 dot matrix possible
Low power operation support:
-- 2.7 to 5.5V
Wide range of LCD driver power
-- 3.0 to 10V
Correspond to high speed MPU bus
interface
-- 2 MHz (when VCC = 5V)
4-bit or 8-bit MPU interface enabled
80 x 8-bit display RAM (80 characters max.)
13,200-bit character generator ROM for a
total of 240 character fonts(5 x 8 dot or 5 x 11
dot)
64 x 8-bit character generator RAM
-- 8 character fonts (5 x 8 dot)
-- 4 character fonts (5 x 11 dot)
16-common x 40-segment liquid crystal
display driver
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Programmable duty cycles
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-- 1/8 for one line of 5 x 8 dots with cursor
-- 1/11 for one line of 5 x 11 dots & cursor
-- 1/16 for two lines of 5 x 8 dots & cursor
Wide range of instruction functions:
Display clear, cursor home, display on/off,
cursor on/off, display character blink, cursor
shift, display shift
Pin function compatibility with HD44780,
KS0066 and SED1278
Automatic reset circuit that initializes the
controller/driver after power on
Internal oscillator with external resistors
Low power consumption
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QFP80 and Bare Chip available
Description
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The ST7066U dot-matrix liquid crystal display
controller and driver LSI displays alphanumeric,
Japanese kana characters, and symbols. It can be
configured to drive a dot-matrix liquid crystal display
under the control of a 4- or 8-bit microprocessor.
Since all the functions such as display RAM,
character generator, and liquid crystal driver, required
for driving a dot-matrix liquid crystal display are
internally provided on one chip, a minimal system can
be interfaced with this controller/driver.
240 5x8(5x11) dot character fonts for a total of 240
different character fonts. The low power supply (2.7V
to 5.5V) of the ST7066U is suitable for any portable
battery-driven product requiring low power
dissipation.
The ST7066U LCD driver consists of 16 common
signal drivers and 40 segment signal drivers which
can extend display size by cascading segment driver
ST7065 or ST7063. The maximum display size can
be either 80 characters in 1-line display or 40
characters in 2-line display. A single ST7066U can
display up to one 8-character line or two 8-character
lines.
The ST7066U has pin function compatibility with the
HD44780, KS0066 and SED1278 that allows the user
to easily replace it with an ST7066U. The ST7066U
character generator ROM is extended to generate
Product Name
Support Character
ST7066U-0A
ST7066U-0B
ST7066U-0E
English / Japan
English / European
English / European
V2.0
2001/03/01
1/42
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