805-00012 Datasheet, PDF (11/11 Pages) List of Unclassifed Manufacturers – Parallax Serial LCD

Product Change Notice: Revision E and Earlier
If your Serial LCD Display does not have a piezospeaker on the back and looks similar to the image
above, please use the following information and specifications when using this product. All connections,
test code and commands remain the same, except for commands controlling the piezospeaker.
Key Specifications
 Power requirements:
o Non-backlit: +5 VDC, 20 mA
o Backlit: +5 VDC, 20 mA (light off), 80 mA (light on)
 Communication: Selectable asynchronous serial baud rates: 2400, 9600, 19200
 Operating temperature: -4 to +158 °F (-20 to +70°C)
 Dimensions: Board and LCD size and style may vary
o 2x16: Approx. 1.5 x 3.15 in (38 x 80 mm)
o 4x20: Approx. 2.4 x 3.9 in (60 x 100 mm)
REV E CAUTION: DO NOT PROVIDE A SIGNAL TO THE ‘RX’ PIN BEFORE APPLYING 5 VDC TO THE ‘5V’
PIN.
Revision History
Version 3.1: corrected current draw specification on Page 1 from 50 mA to 80 mA.
Copyright © Parallax Inc.
Parallax Serial LCDs (#27976, 27977, 27979) v3.1 3/11/2013 Page 11 of 11