HD44780U (LCD-II)
(Dot Matrix Liquid Crystal Display Controller/Driver)
ADE-207-272(Z)
'99.9
Rev. 0.0
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
×
8 dot character fonts and 32 5
×
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
×
8 and 5
×
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 V
CC
= 5V)
•
4-bit or 8-bit MPU interface enabled
•
80
×
8-bit display RAM (80 characters max.)
•
9,920-bit character generator ROM for a total of 240 character fonts
208 character fonts (5
×
8 dot)
32 character fonts (5
×
10 dot)
1
HD44780U
•
64
×
8-bit character generator RAM
8 character fonts (5
×
8 dot)
4 character fonts (5
×
10 dot)
•
16-common
×
40-segment liquid crystal display driver
•
Programmable duty cycles
1/8 for one line of 5
×
8 dots with cursor
1/11 for one line of 5
×
10 dots with cursor
1/16 for two lines of 5
×
8 dots with 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 HD44780S
•
Automatic reset circuit that initializes the controller/driver after power on
•
Internal oscillator with external resistors
•
Low power consumption
Ordering Information
Type No.
HD44780UA00FS
HCD44780UA00
HD44780UA00TF
HD44780UA02FS
HCD44780UA02
HD44780UA02TF
HD44780UBxxFS
HCD44780UBxx
HD44780UBxxTF
Note: xx: ROM code No.
Package
FP-80B
Chip
TFP-80F
FP-80B
Chip
TFP-80F
FP-80B
Chip
TFP-80F
CGROM
Japanese standard font
European standard font
Custom font
2
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