84 MHz Cortex-M4 with DSP and FPU in a WLCSP-49 footprint
It packs 384 KB of Flash and 96 KB of SRAM into a 49-ball WLCSP package, making it a dense compute option for space-constrained industrial and consumer designs that need DSP instructions and a single-precision FPU without moving to a larger BGA or QFP.
Peripheral set and I/O budget
With 36 I/Os and connectivity including I²C, SPI, UART/USART, USB OTG, SDIO, and I²S, this MCU handles sensor fusion, motor-control feedback, and audio streaming in a single chip.
Listed as Active by STMicroelectronics, so no last-time-buy risk on the horizon.