The STM32U599 is a modern Arm microcontroller with 2D GPU

This was announced last year, but the actual product was not available nor described in any detail by ST until a couple of days ago, I think.

I think it's very interesting since it (finally) adds graphics acceleration in hardware to a low-power, integrated-flash modern Arm-based (160 MHz Cortex-M33) microcontroller.

The reference manual seems ... hastily edited (at least my reader is showing duplicated chapters and other strangeness) and the actual GPU seems to be very shallowly described, unfortunately. I was hoping for register-level documentation of its features, like ST does with all other peripherals. Perhaps it's an IP thing. :(

The reference manual is over 3,600 pages, so it's pretty detailed about very many things (this microcontroller is not even close to being "big" by modern standards, yet it looks like there's a universe inside it).