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.

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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.
PS: Be polite in your reply. Otherwise, it will be reported as inappropriate and you will be permanently blacklisted from my help/support.