Active production, WLCSP package, and 84 MHz Cortex-M4 core
It is part of the STM32F4 series, known for DSP instructions and a floating-point unit. The device is supplied in a 49-ball WLCSP package (49-UFBGA, 49-WLCSP), a true chip-scale package that minimizes board area but requires controlled assembly processes — the 0.4 mm ball pitch and thin profile call for a well-tuned reflow profile and X-ray inspection after soldering.
Peripherals and connectivity for compact embedded designs
An internal oscillator is included, though for precise timing an external crystal or clock source is typically used.