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Associate II
April 30, 2026
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STM32N645Z0 Ethernet Configuration Support in STM32CubeMX

  • April 30, 2026
  • 2 replies
  • 254 views

I am currently evaluating the

for use with 1000Base-T Ethernet and am attempting to configure the peripherals using STM32CubeMX. While following the same process as with other STM32 chips, I was unable to find the Ethernet configuration under Pinout & Configuration -> Connectivity. Could you kindly advise where I should configure the Ethernet settings?

Thank you for your assistance.

Best answer by Ghofrane GSOURI

Hello @modecs 

Thank you for your contribution.

ETH should be available for STM32N645Z0, according to*DS14791 Rev. 9, Table 18, which indicates Ethernet signal support for the VFBGA142 package.

For RMII mode, the supported signals are

ETH1_MDC on B12, ETH1_MDIO on K1, ETH1_CLK on K3, ETH1_RMII_REF_CLK on M2, ETH1_RMII_CRS_DV on K2, ETH1_RMII_TX_EN on N2, ETH1_RMII_TXD0 on P1, ETH1_RMII_TXD1 on N3, ETH1_RMII_RXD0 on L2, and ETH1_RMII_RXD1 on M1.

A ticket #0062266  has been escalated to the development team to investigate and correct this behavior.

I will keep you posted with updates.

THX

Ghofrane 

 

2 replies

Ghofrane GSOURI
Ghofrane GSOURIBest answer
ST Technical Moderator
April 30, 2026

Hello @modecs 

Thank you for your contribution.

ETH should be available for STM32N645Z0, according to*DS14791 Rev. 9, Table 18, which indicates Ethernet signal support for the VFBGA142 package.

For RMII mode, the supported signals are

ETH1_MDC on B12, ETH1_MDIO on K1, ETH1_CLK on K3, ETH1_RMII_REF_CLK on M2, ETH1_RMII_CRS_DV on K2, ETH1_RMII_TX_EN on N2, ETH1_RMII_TXD0 on P1, ETH1_RMII_TXD1 on N3, ETH1_RMII_RXD0 on L2, and ETH1_RMII_RXD1 on M1.

A ticket #0062266  has been escalated to the development team to investigate and correct this behavior.

I will keep you posted with updates.

THX

Ghofrane 

 

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Ghofrane GSOURI
ST Technical Moderator
June 30, 2026

Hello ​@modecs 

This issue has been fixed in the latest version of STM32CubeMX 6.18.0 

Download STM32CubeMX6.18.0 from  here 

THX

Ghofrane

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.