Suitable battery type for design with LCD

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janet_smith2000

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Hi,

I have a portable design which use 2x16 LCD. The whole boards required 50mA. Initially I use 2 CR2032 in palleral to supply 3 V to the board. However, the LCD starts flickering.

I use bench supply to develop the system and I didn't notice the problem. Only after I switch the design to battery supply, the board doesnt work.

The battery datasheet can be found here:
http://www.batteryprice.com/productspec/cr2032.pdf

Please advise me what kind of battery I should use. Thanks!
 

You didn't say if it flickers while updating the display or while a steady message display?

However, I faced a similar problem & it was fixed by adding 2 wires to the supply rails going to the LCD and adding soldering layer on the data lines between the LCD & controller.

You didn't tell the LCD type! some are power hungry!
Of course you don't have a backlight! don't you?!
 

I am not sure bout the model of the LCD. but it is Hitachi compatible LCD.
Of cource I don't use BackLight for this design.

The LCD flicker during steady message display.

adding 2 wires to the supply rails going to the LCD
Click to expand...
The wires is connected from where to where?

What do you mean by "adding soldering layer"?[/quote]
 

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