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eduardobernardi7
eduardobernardi7
Associate II
August 3, 2015
Question

STM32L051R + GLASS LCD low power scheme

  • August 3, 2015
  • 2 replies
  • 775 views
Posted on August 03, 2015 at 20:20

Hello !

We are working in a project that needs a glass lcd display, the average consumption  of the system (MCU + LCD) must be around 50 uA. I always used a msp430 with integrated lcd controller to handle this kind of problems. But now I am very tempted to use a STM32L051R mainly due to the costs and performance.

Anyone here already tried this?

I read the AN2656 and noticed that is possible to interface a glass lcd with the stm32. But the average consumption in this application note was too high.

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    2 replies

    stm322399
    stm322399
    Senior
    August 3, 2015
    Posted on August 03, 2015 at 20:48

    Save time and money, using the more expensive STM32L053R.

    That MCU has builtin LCD driver .

    I used the LCD driver of STM32L152 (the discovery board) and reached a mean current draw of 6µA. This solution has less software, which means less current, and less bugs ! Certainly the fastest way to build whatever you are building.

    eduardobernardi7
    eduardobernardi7Author
    Associate II
    August 4, 2015
    Posted on August 04, 2015 at 12:58

    Oh ! Thank you ! , didnt know that st had a stm32 with integrated lcd controller.

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