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pietro2
pietro2
Associate III
October 23, 2015
Question

STM32F030R8T6 and STM32F091RC pin to pin compatibility

  • October 23, 2015
  • 2 replies
  • 765 views
Posted on October 23, 2015 at 09:46

Good morning, i've already working with a STM32F030R8T6 MCU but i need more flash memory.

Is STM32F091RC pin to pin compatible with no code changes?

There is a MCU similar to STM32F030R8T6 but with more than 64K Flash memory?

Thanks.
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    2 replies

    Nesrine M_O
    Nesrine M_O
    Associate
    October 28, 2015
    Posted on October 28, 2015 at 14:47

    Hi serao.pietro,

    Not 100% compatible: In fact, check pins 18, 19, 47 and 48.They are IOs in STM32F030R8T6 but power supply pins on STM32F091RC, 

    Another difference is BOOT0 which can be used as GPIO in STM32F091RC.

    I'd highly recommend you to have a look to the Pinouts and pin descriptions section in the related products datasheets. 

    -Syrine-

    qwer.asdf
    qwer.asdf
    Senior
    October 28, 2015
    Posted on October 28, 2015 at 15:55

    > There is a MCU similar to STM32F030R8T6 but with more than 64K Flash memory?

    Yes, you can use

    http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1574/LN1826/PF261327

    , it has 256KB of flash memory and 32KB of SRAM. Also it will be more compatible with you microcontroller because it's the same subfamily (STM32F030).

    But unfortunately, the same 18, 19, 47, 48 pins are power pins (as Syrine indicated) in STM32F030RC too, you'll have to change the schematics.

    Also, STM32F091RC has more differences than STM32F030RC (pin1: VBAT vs VDD, BOOT0).

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