This listing from the STM32F051 datasheet shows that both of these peripherals ... This is something that we see a lot across STM32 peripherals, not just for USARTs, but also for timers in particular.

Good STM32 IC on the left ... to the point where they have fixed some of the errata listed in the ST datasheet. An article over at CNXSoft provides some more details on this MCU.

STMicroelectronics has created STM32 Hotspot to offer non-productized code built around its STM32 microcontrollers free of charge and distributed under the company’s licensing terms for direct ...