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Basic 16x2 Character LCD - Red on Black 5V

sku: LCD-00791 RoHS Compliant In Fritzing Library In Eagle Library

Description: This is a basic 16 character by 2 line display with a Black background and a Red backlight. Utilizes the extremely common HD44780 parallel interface chipset (datasheet). Interface code is freely available. You will need ~11 general I/O pins to interface to this LCD screen. Includes red LED backlight. These modules are the thin type.

Dimensions: 3.15" x 1.425" x 0.300"

Documents:

Pricing

images are CC BY-NC-SA 3.0

ASCII version

Comments 12 comments

Member #197521 | about a year ago 1

Does this lcd come with the KS0066U(datasheet) or HD44780? and are they both the same? I’m having trouble getting it to work with the Ti launchpad.
- Toni_K | about a year ago 1
  
  It comes with the HD44780.
Member #152626 | about 9 months ago 1

Contrast control does not work. I have a 10K pot connected between +5V and ground with the arm connected to Pin 3 as per the datasheet. Varying Pin 3 from 0 to 5V has no effect – the display remains blank. The backlight is working. The only other connections are: Pins 1 & 16 to ground and Pin 15 through a 470R to +5V.
- Single T | about 9 months ago 1
  
  This is likely a hardware issue with your specific screen. We would be happy to help you out via Tech Support.
  Thanks,
  Tim
A. Babb | about 8 months ago 1

Found this cool widget (I think that’s what its called):
http://www.dinceraydin.com/djlcdsim/djlcdsim.html
It’s an LCD simulator! Can be handy if you don’t have the real thing to play with… or forgot to get new batteries >.
prairie mystic | about 7 months ago 1

How much current does the backlight need? It’s not in the datasheet :(
This is the 5V (not 3.3V) version?
- DrKraus | about 7 months ago 1
  
  I have mine running on 5V. Btw the picture doesn’t do this justice, it’s too cool for school…
  - RanHam335 | about 5 months ago 1
    
    I’ve ordered one, haven’t received it yet, but I’m putting my schematic diagram together. I assume you had no current limiting resistor? Also I notice that the datasheet call for max 4.6 volts, I assume 5volts won’t hurt it?
    - BobG | about 4 months ago 1
      
      Running at 5v won’t hurt at all. I have one for several years and the backlight still works.
Tothemoonn | about 3 months ago * 1

Works great
Justin Hardin | about 2 months ago 1

Question: I purchased a 5V LCD but have since decided I’d really like my next project running at 3.3V. Is there an easy-ish way to convert this to run on a 3.3V circuit? I’m assuming the SMD resistors on the back are chosen for both logic level and LED forward voltage for 5V. I can always buy another board or a step-up break-out, but thought it was worth asking the community if changing the voltage on these boards is easy?