Search found 4 matches

by AlphaByte
Fri Jun 04, 2010 6:28 am
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: LCD power supply VO
Replies: 3
Views: 10426

Re: LCD power supply VO

Why is the LCD voltage different than the logic power supply? The datasheet shows a pot to create VDD-VO at the VO pin on the LCD. is this for contrast? I thought contrast is controlled by software commands. Also why would you need a pot? datasheet shows VDD-VO to be 0.5v, why not use a voltage div...
by AlphaByte
Fri Jun 04, 2010 5:37 am
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: Current draw for VO and transistor drive : MOPAL204A
Replies: 3
Views: 5007

Re: Current draw for VO and transistor drive : MOPAL204A

Hi All, hope this isn't too silly a question but I was thinking of controlling the contrast and the backlight intensity of my MOPAL204A screens by using a couple of PWM outputs and transistors. Basically the PWM drives a transistor with a cap on its output and this voltage gets fed into V0 for cont...
by AlphaByte
Fri Jun 04, 2010 5:24 am
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: MOP-GL24064A-BGFW - Power Requirements
Replies: 3
Views: 5765

I attached an image that depicts the voltage tripler interface but it
failed to display on the forum.
by AlphaByte
Fri Jun 04, 2010 5:18 am
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: MOP-GL24064A-BGFW - Power Requirements
Replies: 3
Views: 5765

Re: MOP-GL24064A-BGFW - Power Requirements

On the product page, where they list the display specs and display the Buy button, they list this display module (MOP-GL24064A-BGFW) as a 5V display, with parallel interface . However, when I look at the generic manual for the MOP series, it shows a power supply connection that displays a 5V only c...