GPIO MAX SPEED. Can't seem to find it in the Reference Manual.

[PAdam.6]

Hi Guys, I'll be purchasing a few STM32H753's in a week or two.

Can someone please tell me where to find info on the fastest clock rate the GPIO pins can run at. In the reference manual I can only see in GPIOx_OSPEEDR register these settings:

00: Low Speed

01: Medium Speed

10: High Speed

11 Very High Speed.

This doesn't tell me the actually Mhz GPIO SPEED.

Does anyone know where to find the info?

Thanks guys, Peter.

[Tesla DeLorean]

Characteristics would be a Data Sheet thing

These are arguable SLEW RATE settings for the transistors in the IO block.

You probably don't want to jam "100 MHz" edges into short traces without some termination as it is likely to ring or over/under shoot.

On the F4/F7 the 100 MHz SDRAM signals were frequently in 50 MHz mode, and things like SDIO/SDMMC can work faster more reliably if you dump less energy into the transistors.

[Tesla DeLorean]

See Table 61 and 62, vs Speed column

https://www.st.com/resource/en/datasheet/stm32h753vi.pdf