Product description: LCD display 2x16 characters blue with connectors - justPi
This alphanumeric LCD display from justPi presents values on two lines, each with 16 characters . It is powered by 5V . It is characterized by exceptionally simple operation, high availability, and extensive support for numerous microcontrollers. Characters are displayed on a blue background.
LCD display 2x16 characters blue with connectors - justPi.
Pinout description.
Display pinout description
The alphanumeric display has 12 pins that are not labeled on the board. Each pin corresponds to:
- 1 - VSS - system ground
- 2 - VDD - 5V power supply
- 3 - V0 - contrast
- 4 - RS - selection of display instruction register (low state) or data register (high state)
- 5 - R/W - read (low state) / write (high state)
- 6 - E - unlocking the display
- 7...14 - DB0...DB7 - data bus
- 15 - LEDA - backlight power supply 5 V
- 16 - LEDK - ground of the backlight system
2x16 LCD module control
The justPi display can be controlled in four modes:
- 8-bit without reading the busy flag - eight data bus lines and two control lines (RS, E - RW connected to ground) are needed for transmission,
- 8-bit with busy flag reading - eight data bus lines and three control lines (RS, E, RW) are needed for transmission,
- 4-bit with busy flag reading - four data bus lines and three control lines (RS, E, RW) are needed for transmission,
- 4-bit without reading the busy flag - four data bus lines and two control lines (RS, E - RW connected to ground) are needed for transmission.
The most commonly chosen communication method is 4-bit mode without reading the busy flag. Sending half a byte saves valuable microcontroller I/O pins – only four data lines are used (in 8-bit mode, eight are occupied). Not reading the busy flag introduces software delays, but saves another line – R/W. This pin can be permanently connected to ground, as data will only be transmitted one way – to the display.
Blue LCD display with connectors - justPi.
The LCD display has soldered connectors.
Display technical specifications
- Type: LCD alphanumeric display
- Supply voltage: 5 V
- HD44780 compatible driver
- Highlighting: white characters
- Blue background
- Operating temperature range: -20°C to 70°C
- Dimensions of one character: 2.45 x 5 mm
- Module dimensions: 80 x 36 mm
