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 equiring low power dissipation.
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 equiring low power dissipation.
LCD 2 x16 (HD44780U)
Specifications LCD 2x16 (HD44780U)
- Characters: 2x16
- Character Resolution: 5x7
- Connection: Standard 16 PIN interface
- Backlight: Green
- Voltage Supply: 5V
- Dimensions: 3.6 cm x 8 cm x 1 cm (H x W x D)
HD44780U Pin Connection
- PIN 1: Vss - GND
- PIN 2: VDD - +5V VCC
- PIN 3: Vo - Contrast Adjustment
- PIN 4: RS - Reset
- PIN 5: R/W - Read/Write ("0" = Write to LCD module "1" = Read from LCD module)
- PIN 6: E - Enable Signal
- PIN 7: DB0 Data 0
- PIN 8: DB1 Data 1
- PIN 9: DB2 Data 2
- PIN 10: DB3 Data 3
- PIN 11: DB4 Data 4
- PIN 12: DB5 Data 5
- PIN 13: DB6 Data 6
- PIN 14: DB7 Data 7
- PIN 15: Backlight +5V VCC
- PIN 16: Backlight GND
Table LCD HD44780U Instruction set
Table Characterset for 5x7 dot font