What the 100 MHz Cortex-M4 buys the design
The STM32F413VGH6 is an STM32F4-series microcontroller built around an ARM Cortex-M4 core clocked at 100 MHz. The Cortex-M4 includes a single-precision FPU and DSP instruction set, so the 100 MHz figure is the real throughput you get for filter loops, FFT bins, or motor-control math — not a marketing MHz that stalls on every multiply-accumulate.
Peripheral set and integration checklist
This MCU packs 81 I/O lines and a connectivity list that reads like a system-on-chip: CANbus, USB OTG, QSPI, SAI (serial audio interface), I2C, SPI, UART/USART, IrDA, LINbus, and MMC/SDIO. The QSPI interface is worth calling out — it lets you memory-map an external serial NOR Flash or PSRAM for code execute-in-place or data logging, stretching the effective memory beyond the on-chip 1 MB Flash and 320 KB SRAM.
The 100-UFBGA package measures 7x7 mm with a 0.5 mm ball pitch, making it one of the densest options for a 100-pin MCU. The trade-off: fine-pitch BGA requires controlled impedance PCB fabrication, solder-paste inspection, and X-ray post-reflow inspection. No exposed thermal pad on this package — heat dissipation is through the BGA balls and the PCB copper plane. Surface-mount only — no socketed prototyping; plan for a debug adapter with a 10-pin or 20-pin SWD connector.
The base product number STM32F413 spans multiple Flash and package variants across the same die, so if a future revision needs more I/O or a different package, the migration stays within the same family and peripheral set.