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jea74
Associate III
April 15, 2023
Solved

Which pins of the Stmod+1 & 2 connectors correspond to the MCU pins for the B-U585-IOT02A board?

  • April 15, 2023
  • 2 replies
  • 1048 views

I cannot find the logic in the schematics about the mapping of the 2 stmod+ connectors.

Which pins of the stmod+ correspond to the MCU pins ?

Page 7 of the schematic folio is very confusing.

I just found pin 3 & 4 of the stmod+2 to be mapped to PG10 & PG9

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Best answer by Peter BENSCH

This is perhaps more understandable if you look at it together with UM2839, section 7.12.

In the schematics of the board on page 7, however, everything is actually listed neatly:

  • STMOD+.1 UART2 CTS = PA0
  • STMOD+.1 SPI1_NSS = PA4

etc.

And PA0 and PA4, for example, can then be found on page 3 on the STM32U585AII6QU, like all the other pins.

Does it answer your question?

Regards

/Peter

2 replies

Peter BENSCH
Peter BENSCHBest answer
Technical Moderator
April 16, 2023

This is perhaps more understandable if you look at it together with UM2839, section 7.12.

In the schematics of the board on page 7, however, everything is actually listed neatly:

  • STMOD+.1 UART2 CTS = PA0
  • STMOD+.1 SPI1_NSS = PA4

etc.

And PA0 and PA4, for example, can then be found on page 3 on the STM32U585AII6QU, like all the other pins.

Does it answer your question?

Regards

/Peter

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jea74
jea74Author
Associate III
April 17, 2023

Dear Peter,

Thank you - the perfect example of the guy not reading the user's manual till the end...

I focused only on the schematics, for sure the Stmod+ tables in the UM are more helpful to know which pin is wired to the MCU

Kind regards,

Jerome