Is that possible to drive a 5V liquid crystal display with the 3.3V STM32L073 mcu?

XR.1 · ‎2023-11-13

Hi,

A customer is in the process of sending to manufacture a 5V, 15 segments and 8 planes, custom LCD. I wonder whether the STM32L073 mcu is going to be capable of driving such display. Put it in other words: whether 3.3V is going to be good enough for driving the segments and planes.

I want to use this mcu because its integrated LCD driver, however, I'm affraid it can't. I'm attaching the specs.

I'm just starting the hardware design, and I really don't want to use an external driver, like the ubiquitous HT16C22.

Thank you!

SofLit · ‎2023-11-14

Hi,

I don't think this is possible. Think about a voltage level shifter solution.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

View solution in original post

waclawek.jan · ‎2023-11-13

The built-in LCD controller in STM32 can't drive more than 3.3V.

JW

SofLit · ‎2023-11-14

Hi,

I don't think this is possible. Think about a voltage level shifter solution.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.