168 MHz ARM Cortex-M4 with DSP and FPU
The STMicroelectronics STM32F407ZET6 is a high-performance 32-bit microcontroller built around the ARM Cortex-M4 core with single-cycle DSP instructions and a hardware floating-point unit.
Peripheral set for system-level integration
This MCU integrates a rich peripheral set that reduces external component count. Connectivity includes Ethernet MAC, CAN 2.0B, two USB OTG interfaces (one with HS), six UART/USART, three SPI, three I²C, and an 8-bit camera interface (DCMI). The 114 general-purpose I/O pins provide ample headroom for HMI panels, sensor arrays, and actuator control.
Package and footprint considerations for the 144-LQFP
The part ships in a 144-pin LQFP with a 20×20 mm body and 0.5 mm pitch. This is a hand-solderable QFP for prototyping, but the fine pitch demands a controlled reflow profile and careful inspection.
For new designs, there is no near-term LTB risk, and the STM32F4 series has a long roadmap history, making this a safe choice for production programs.
Second-source and cross-ship alternatives
The STM32F407ZET6 is a specific density and package variant within the STM32F405/407/415/417 family. A direct pin-compatible alternative is the STM32F407VGT6, which shares the same 144-LQFP footprint and peripheral set but offers 1 MB Flash and 192 KB SRAM — a drop-in upgrade for firmware that outgrows the 512 KB budget. The STM32F407ZET6 has no official second-source from another manufacturer; dual-sourcing relies on stocking multiple date-code lots from authorized distribution. The STM32L151CBU6A is a different architecture (Cortex-M3, lower power, 32 MHz) and is not a functional replacement.