Low Power Display Unit

Hi guys,

I am looking for low power display device which i can interface with atmega328/168.

You can suggest me taking arduino as under consideration.

Low power

low in Voltage supply.

low in current consumption.

low in power dissipation.

Issues with 16x2 LCD

Draws logic supply current nearly 200mA which is reallly high for me.

Issues with 3 1/2 Digit display is

Such displays are static displays. ( static ? )

static means ones lines state is changed the display will change accordingly, as no controller is embedded with it!!! am i correct?!

Guys i want such dissplay whose current consumptiona and voltage supply as low as < = 3.0 v, and in 1-10 mA or less.

Thanx
/Annim

No it does not.

LCDs are the displays used for absolute minimum current draw - such as in digital watches.

The SPLC780D chip that is used in the 1602 LCDs to which you refer has a specified logic operating current of 200µA - two hundred microamps. There is a second chip as well, it draws perhaps another 50 microamps.

You are confusing the current drawn by the LED illuminant. Necessarily, anything which lights up so you can see it better, especially in dim light, must draw substantial power. If you are happy to work in daylight, then an LCD - without the backlight - is the way to go.

thanx for quick reply

But from here https://www.sparkfun.com/datasheets/LCD/GDM1602K-Extended.pdf in pg 3, under DC characteristics
its written 1.5 - 2.5 mA.

Its my mistake i was considering values against wrong attibutes.

Now thing is The current is in Milli Amps.

Are you sure that the LCD ( generic ) (16x2 or 20 x 4 ) draws 200uA as its functional requirement?
Please provide me link for the same so i will read the informations.

/thanx

The SPLC780D chip that is used in the 1602 LCDs to which you refer has a specified logic operating current of 200µA - two hundred microamps. There is a second chip as well, it draws perhaps another 50 microamps.

  1. the display has a KS0066U-Controller
  2. of course is the consumption as you (Annim) wrote

Yes, well, I was referring to one sort of controller chip, if it is a different controller, the specifications will of course differ. No surprises there.

Part of the multiplexing arrangement on the LCD board is a chain of five 2.2k resistors dividing up the 5V supply, so these alone will draw about 500µA in addition to the controller chips themselves.

The point remains that even a power indicator LED (which are now highly efficient) included on a module will draw at minimum, a couple of milliamps.

draw at minimum, a couple of milliamps.

Yo, mostly 20 mA (normal LED), Some SMD or 4208 or so will use less.