168 MHz Cortex-M4 with DSP and FPU — the connectivity workhorse
The STM32F407IGH6 provides Ethernet MAC, two CAN 2.0B controllers, USB OTG HS/FS, DCMI, and EBI/EMI. 140 I/O pins are available on the 201-ball UFBGA.
1 MB Flash / 192 KB RAM — headroom for a full protocol stack
The 1 MB Flash (1M x 8) is organized with 4 KB and 128 KB sectors, which matters when you split firmware between a bootloader and application image. The 192 KB RAM includes 64 KB of CCM (core-coupled memory) that runs at full 168 MHz without wait states — put the interrupt vector table and real-time control loops there. The remaining 128 KB is split between SRAM1 and SRAM2 accessible by DMA and the Ethernet descriptor ring.
Industrial temperature range and active lifecycle
The lifecycle status is Active per ST's current product roster, which means no end-of-life notice is pending — it qualifies for new design-ins and long-term production commitments.
201-ball UFBGA — board layout and rework considerations
MSL 3 out of the bag — if the moisture barrier bag has been open longer than the floor-life window, a 24-hour bake at 125°C before reflow is mandatory to prevent popcorning. The 168 MHz core draws enough current that the LDO regulator on the die needs a clean 1.2 V rail from the internal regulator; bypass the Vcap pins with 2.2 µF and 100 nF as close to the balls as the via pattern allows.