Skip to main content
Visitor II
April 5, 2025
Question

Programming header and Debug Header for STM32L073 micro?

  • April 5, 2025
  • 1 reply
  • 732 views

Hi,

I am laying out  aboard with STM32L073. I would like to add a debug header and a programming header. Do you know which pins i should connect  these headers to?

 

I see that PA13 and PA14 are involved in debugging, but which other pins do i also need to include in the header?

    This topic has been closed for replies.

    1 reply

    Graduate II
    April 6, 2025

    VCC and GND

    NRST to allow for controlled startup

    On CM3,4,7 consider PB3 / SWO, but not supported on CM0(+) parts

    amass.9Author
    Visitor II
    April 6, 2025

    Thanks, by CM3, CM4, CM7, do you mean the Cortex-M thing?

    How would i know if i have a CM3 say?

    The part number is

    STM32L073CBU6 (LQFP48)

    Super User
    April 6, 2025

    @amass.9 wrote:

    How would i know if i have a CM3 say?


    It would certainly be stated in the datasheet.

    Most likely even in the marketing material; eg,

    https://www.st.com/en/microcontrollers-microprocessors/stm32l0-series.html 

    STM32L0 is Cortex-M0+