Skip to main content
GYUYEONLEE
Associate II
March 9, 2026
Solved

STM32F413VGT I2C1 Support 1MHz?

According to Datasheet, I2C of STM32F413VGT can be increased to 1 MHz, is it possible?

 

 

mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
March 9, 2026
@GYUYEONLEE wrote:

i2c.png

 

 So DS11581 Rev 7 / page 35.

They can reach 1MHz but not fully Fast mode Plus compliant. The fast mode needs 20 mA output current drive for Fast-mode Plus operation.

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
View in thread

5 replies

TDK
TDK
March 9, 2026

You just asked this, and it was answered:

https://community.st.com/t5/stm32-mcus-products/stm32f413vgt-i2c-support-fast-mode-plus-1mhz/td-p/883847

FMPI2C can do 1 MHz. I2Cx cannot.

Please don't repost.

"If you feel a post has answered your question, please click ""Accept as Solution""."
    GYUYEONLEEAuthor
    Associate II
    March 9, 2026

    If you look at Datasheet, I'm asking because there's a phrase that says you can raise it up to 1mHz. I've checked that it's divided into FMPI2C and I2C, but I'm asking because there's a phrase that I2C can also increase to 1MHz.

     

    mƎALLEm
    mƎALLEm
    ST Technical Moderator
    March 9, 2026

    Hello,

    When you refer to the documentation in a post you need definitely to provide the document reference (DSxxx / revision) + the page and preferably a screenshot of that statement.

    Thank you

    To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
    Terms & ConditionsAccessibility statement