← All parts
HD44780 LCD Controller
HD44780
Hitachidisplay
HD44780 LCD Controller is a dot-matrix liquid crystal display controller that can drive up to two lines of 8 characters or one line of 16 characters, interfaced with a microprocessor through 4- or 8-bit buses.
In stock
Specifications
7- Operating Voltage
- 2.7V to 5.5V
- Interface
- 4- or 8-bit microprocessor interface
- Resolution
- Not applicable (character-based display)
- Range
- 16-character × 2-line or 8-character × 1-line display
- Accuracy
- Not applicable (character-based display)
- Temperature Range
- Not specified in the datasheet
- Package
- FP-80B or TFP-80F
Pinout
14| Pin | Name | Functions | Notes |
|---|---|---|---|
| RS | Register Select | GPIO | Selects registers (0: Instruction register, 1: Data register) |
| R/W | Read/Write | GPIO | Selects read or write operation |
| E | Enable | GPIO | Starts data read/write |
| DB4 to DB7 | Data Bus (High Order) | GPIO | Four high order bidirectional tristate data bus pins for 4- or 8-bit operation |
| DB0 to DB3 | Data Bus (Low Order) | GPIO | Four low order bidirectional tristate data bus pins for 4- or 8-bit operation |
| CL1 | Clock to Latch Serial Data D | GPIO | Clock to latch serial data D sent to the extension driver |
| CL2 | Clock to Shift Serial Data D | GPIO | Clock to shift serial data D |
| M | Switch Signal for AC Waveform Conversion | GPIO | Switch signal for converting the liquid crystal drive waveform to AC |
| D | Character Pattern Data | GPIO | Character pattern data corresponding to each segment signal |
| COM1 to COM16 | Common Signals | GPIO | Common signals for the liquid crystal display, with non-selection waveforms at 1/8 and 1/11 duty factors |
| SEG1 to SEG40 | Segment Signals | GPIO | Segment signals for the liquid crystal display |
| V1 to V5 | Power Supply | POWER | Power supply for LCD drive, with a maximum of 11V (VCC - V5) |
| VCC | Supply Voltage | POWER | 2.7V to 5.5V |
| GND | Ground | GND | 0V ground reference |
Interactive pinout
Highlight:
HD44780
Click a pin to copy its name · tap a tag above to spotlight a bus.