• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 78 subscribers
  • Views 731 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

How to use LCD driver for LED seven segment display?

Raymond LI
Prodigy 90 points

The MSP430 has the built in LCD display driver for the LCD display. It is possible to use the LCD control for the LED seven segment display?

  • 0
    Guru 227245 points

    Simply put: no.

    LCD segments are a capacitive load (very small driving currents) and are activated by medium-frequency AC voltage

    LEDs are activated by high currents of DC voltage.

    Providing the required voltage levels and the AC signal for the LCDs is the main purpose of the LCD controller. For an LED, a simple digital I/O pin is good enough, no controller needed (and multiplexing can be done using DMA and a timer).
    On many MSPs, the LCD segment driver pins can be also used as GPIO pins. However, if you have an MSP with dedicated segment lines, these pins are totally wasted if you have an LED display.

**Attention** This is a public forum