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HD44780U Datasheet, PDF (1/59 Pages) Hitachi Semiconductor – Dot Matrix Liquid Crystal Display Controller/Driver | |||
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HD44780U (LCD-II)
(Dot Matrix Liquid Crystal Display Controller/Driver)
Description
The HD44780U dot-matrix liquid crystal display controller and driver LSI displays alphanumerics,
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.
A single HD44780U can display up to one 8-character line or two 8-character lines.
The HD44780U has pin function compatibility with the HD44780S which allows the user to easily replace
an LCD-II with an HD44780U. The HD44780U character generator ROM is extended to generate 208 5 Ã
8 dot character fonts and 32 5 Ã 10 dot character fonts for a total of 240 different character fonts.
The low power supply (2.7V to 5.5V) of the HD44780U is suitable for any portable battery-driven product
requiring low power dissipation.
Features
⢠5 à 8 and 5 à 10 dot matrix possible
⢠Low power operation support:
 2.7 to 5.5V
⢠Wide range of liquid crystal display driver power
 3.0 to 11V
⢠Liquid crystal drive waveform
 A (One line frequency AC waveform)
⢠Correspond to high speed MPU bus interface
 2 MHz (when VCC = 5V)
⢠4-bit or 8-bit MPU interface enabled
⢠80 à 8-bit display RAM (80 characters max.)
⢠9,920-bit character generator ROM for a total of 240 character fonts
 208 character fonts (5 à 8 dot)
 32 character fonts (5 à 10 dot)
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