What is the maximum Flash clock freqency of STM32H743?

[roland23]

Is it possible to drive the controller with 480 MHz and therefor the flash with 240 MHz?

How many waitstates have to be set at 240 MHz?

[berendi]

Look for FLASH recommended number of wait states in the reference manual.

[roland23]

In Table 13 in reference manual (DS12110 Rev 7) the maximum frequency is 225 MHz (see attachment). But in Comment (1) there is a reference to the maximum product Faclk frequency (240 MHz).

If I config the Faclk freqency to 240 MHz in the STM32CubeMx there is no error and the controller is running well.

[Danish1]

Can you double-check you're looking at the right document.

For stm32H743, the Reference Manual is RM0433 for "STM32H742, STM32H743/753 and STM32H750 Value line

advanced Arm®-based 32-bit MCUs"

And that states in Table 17 that you need to be in VOS0 to go to 240 MHz.

[berendi]

> Reference Manual is RM0433

and Revision 7 dated Feb 27, 2020

[roland23]

Thank you. I've got the wrong version :face_with_tears_of_joy: