168 MHz Cortex-M4 with 1 MB flash — processing headroom for real-time control
The STM32F407ZGT7 is an ARM Cortex-M4 MCU clocked at 168 MHz, with 1 MB of on-chip flash and 192 KB of SRAM — enough code space and working memory to run a real-time control loop, a TCP/IP stack, and a local data logger without external memory. The 32-bit single-core processor includes a single-cycle multiply-accumulate unit and floating-point unit, so DSP-style filtering and motor-control FOC (field-oriented control) algorithms execute without a separate DSP coprocessor.
Connectivity and peripheral set — Ethernet, CAN, USB OTG on one die
Built-in Ethernet MAC with dedicated DMA, two CAN 2.0B interfaces, and a USB OTG HS port mean this MCU can serve as a fieldbus gateway or an edge controller bridging a CAN-based sensor network to an Ethernet backbone. The 114 general-purpose I/O lines, combined with 24-channel 12-bit ADC and dual 12-bit DAC, handle multi-axis analog feedback and analog output without external muxing or DAC ICs. Peripherals include DMA controllers, a PWM timer suitable for three-phase motor drive, a watchdog timer, and a brown-out reset — the DMA offloads data movement from the CPU, leaving the core free for control math.
Industrial temperature grade and package — board-fit checklist
Housed in a 144-pin LQFP with a 20x20 mm body and 0.5 mm pitch — the fine pitch demands a four-layer PCB for reliable fan-out of the 114 I/O, with dedicated power and ground planes to keep the core and I/O supply rails clean.
Active lifecycle and sourcing posture
RoHS3 compliant (2011/65/EU + 2015/863), with no halogenated flame retardants in the molding compound — the LQFP package is lead-free and compatible with standard reflow profiles.