40x4 ALPHANUMERIC LCD Display
This is a big 40x4 LCD display. It is 40 character wide and has 4 rows. It supports both 4 bit and 8 bit interface. And is based on controller which is HD44780 compatible. It has yellow green color backlight whose intensity can be controlled using PWM technique or a resistor. It can be easily interfaced to 8051, PIC, AVR microcontroller. It can also be interfaced to Arduino, Raspberry PI and other microcontrollers.
Pin No. | Symbol | Description |
1~8 | DB7~DB0 | Data bus line |
| 9 | E1 | Enable signal |
| 10 | R/W | Read/Write select signal |
| 11 | RS | Data/ Instruction select signal |
| 12 | VO | Contrast Adjustment |
| 13 | VSS | Ground |
| 14 | VDD | Power supply for logic |
| 15 | E2 | Enable signal |
| 16 | NC | No connection |
| 17 | A | Power supply for B/L + |
| 18 | K | Power supply for B/L - |
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40x4 ALPHANUMERIC LCD Display
This is a big 40x4 LCD display. It is 40 character wide and has 4 rows. It supports both 4 bit and 8 bit interface. And is based on controller which is HD44780 compatible. It has yellow green color backlight whose intensity can be controlled using PWM technique or a resistor. It can be easily interfaced to 8051, PIC, AVR microcontroller. It can also be interfaced to Arduino, Raspberry PI and other microcontrollers.
Pin No. | Symbol | Description |
1~8 | DB7~DB0 | Data bus line |
| 9 | E1 | Enable signal |
| 10 | R/W | Read/Write select signal |
| 11 | RS | Data/ Instruction select signal |
| 12 | VO | Contrast Adjustment |
| 13 | VSS | Ground |
| 14 | VDD | Power supply for logic |
| 15 | E2 | Enable signal |
| 16 | NC | No connection |
| 17 | A | Power supply for B/L + |
| 18 | K | Power supply for B/L - |
