Stm32h5 usb hs and hexadeca/hspi/xspi spi

[etheory]

Dear ST,

Will you be releasing a variant of the H5 with both USB HS support and hexadeca/hspi/xspi support?

It seems confusing that your U5 series supports this but your higher speed more performance range doesn't.

Thanks.

[Soren Myllerup MIKKELSEN]

Hello @etheory 
For this kind of combination you can have a look at STM32H7R3, which offers HexadecaSPI (16-bit serial RA) + Octal Flash, and USB HS PHY. 

This demo shows USB DRD and DRP: https://www.youtube.com/watch?v=FpX9AdRocYQ

And its available as FS: https://www.st.com/en/microcontrollers-microprocessors/stm32h7r3-7s3.html# Teh

It all runs on the STM32H7S78-DK, which has a 16bit Serial PSRAM at 200MHz DTR + Octal SPI NOR flash at 200MHz DTR.

Best regards

Soren 

[etheory]

Thanks @Soren Myllerup MIKKELSEN,

I appreciate your reply.

The reason I want to use the H5 range is the lower power usage, and the fact it has onboard flash.

The issue with the STM32H7S and R series is that they use too much power and don't have onboard flash, and for the application I want, I'm after an energy efficient MCU with onboard flash, hexadeca support and USB HS. Unfortunately this is only available in the U5 range, but they aren't fast enough for the compute needed for my application, but the H5 is. Also, the H7S/R is overkill for my needs.

Thanks.

[Soren Myllerup MIKKELSEN]

Hello @etheory 
Which frequency are you looking for with Hexadeca SPI? For high speed its rarely seen on mainstream and entry-high performance MUCs. 

For sure the H7RS is not create for battery powered devices. H7R3 in VOS LOW with core freq at 300/400MHz, would still consume more than the H5 comparing all peripherals ON in Run mode. But we do see some applications where the MCU is not the main consumer of the battery. for example in Thermostats or Ebikes etc, which sometimes with on larger displays/resolutions.