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Parallax 27979

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$54.95 ea

560 ship on Jun. 12

  • Jameco Part no.: 2109309
  • Manufacturer: Parallax
  • Manufacturer no.: 27979
  • NCNR (Non-Cancelable, Non-Returnable)
  • HTS code: 8524110000
  • Web Exclusive

4 x 20 Serial LCD with Backlight

The Parallax Serial LCD's are very functional, low-cost liquid crystal displays that can be easily interfaced to and controlled by a microcontroller using a I/O pin. Code examples are included for the BASIC Stamp and Propeller chip. The LCD displays provide basic text wrapping so that your text looks correct on the display. Full control over all of their advanced LCD features allows you to move the cursor anywhere on the display with a single instruction and turn the display on and off in any configuration. They support the same visible characters as the BASIC Stamp Editor's Debug Terminal (ASCII Dec 32-127). In addition, you may define up to eight of your own custom characters to display anywhere on the LCD.

This device can be connected to a PC serial port using a MAX232 line driver. The circuit isn't supported by Parallax, but it's possible to make this connection with a few dollars of parts.


  • Clear 4x20 character display
  • Turn backlighting on or off with a single command
  • Directly supports ASCII DEC characters 32-127
  • Eight user-definable custom characters
  • Move the cursor anywhere on the display with a single command
  • Baud mode selector and adjustable contrast on the back of the display
  • Power requirements: +5 VDC, 10 mA (light off), 50 mA (light on)
  • Selectable asynchronous serial baud rates: 2400, 9600, 19200
  • Operating temperature range: -4 to +158°F (-20 to +70°C)
  • Dimensions: 2.37" x 3.86"

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  • Specification Value
    Characters x Lines20x4
    Character / Background ColorBlack / Yel,Grn
    Backlight (Y/N)Y
    Character Format5x8
    Display Size (WxH) InchesN/A
    Supply Current50 mA
    Maximum Input Voltage5 V
    Module Size (W x H x T)2.37 in. x 3.86 in.
    Display ModeSTN Pos. Transflective

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