Packaged in a 100-LQFP (14x14 mm) with 31 I/O brought out, the footprint is moderate — dense enough for a compact PCB but with enough room for manual inspection during prototyping or rework.
At 50 MHz the Cortex-M3 handles a real-time control loop while servicing Ethernet or CAN traffic.
Peripherals and I/O budget
31 I/O on a 100-pin package means roughly a third of the pins are dedicated to power, ground, and analog functions — typical for a mixed-signal MCU. Ethernet MAC and CAN controllers are integrated, reducing the BOM count for industrial communication nodes.
Memory sizing
It can hold a modest TCP/IP stack plus application code, but leaves limited headroom for large lookup tables or extensive data logging. Designs that need larger firmware images or bigger packet buffers will hit the ceiling — plan accordingly during architecture review.