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Parameters
- 2x16 characters LCD display,
- HD44780 compliant driver
- Backlighting: red/black, red characters
- Module size : 80 x 36 mm
- The dimensions of the sign: 2.45 x 5.00 mm
- Operating temperature range: -20 °C to +70 °C
Description
Popular alphanumeric LCD display, powered by 5 V. It is characterized by simple operation, high availability and numerous support for many microcontrollers.
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Product compatible with Arduino The standard set of libraries and sample programs downloaded with the Arduino environment includes the LiquidCrystal library,which allows to operate the display. |
Dimensions and outputs
| No. | Name | Description |
| 1 | VSS | Mass |
| 2 | VDD | Power supply +5V |
| 3 | V0 | Contrast |
| 4 | RS |
Selection of the display instruction register (low state) or data register (high) |
| 5 | R/W | Reading (low state) / Recording (high state) |
| 6 | E | Unlocking the display |
| 7 | DB0 |
The data bus. |
| 8 | DB1 | |
| 9 | DB2 | |
| 10 | DB3 | |
| 11 | DB4 | |
| 12 | DB5 | |
| 13 | DB6 | |
| 14 | DB7 | |
| 15 | LEDA | Backlight power supply +5V |
| 16 | LEDK | Mass of the backlight |
Control
The display can be controlled in modes:
- 8-bit without reading the occupancy flag - eight data bus lines and two control lines (RS, E - RW connected to ground) are required for transmission.
- 8-bit with reading the occupancy flag - eight data bus lines and three control lines (RS, E, RW) are required for transmission.
- 4-bit with reading the occupancy flag - four data bus lines and three control lines (RS, E, RW) are required for transmission.
- 4-bit without reading the occupancy flag - four data bus lines and two control lines (RS, E, RW connected to ground) are required for transmission.)
The most common way of communication is 4-bit mode without reading the occupancy flag. Sending half a byte saves valuable I/O outputs of the microcontroller - only four data lines are used (eight are occupied in 8-bit mode). Not reading the occupancy flag makes software delays necessary, but saves another line - R/W. This pin can be permanently connected to the ground, as the data will only be transported one way, to the display.
Useful links |
