The 120 MHz Cortex-M4F core with FPU runs a full TCP/IP stack, a USB host stack, and a real-time control loop on a single chip. The 1 MB Flash is sized for firmware images that include an Ethernet bootloader, application code, and a file system. The 256K SRAM supports multiple packet buffers and a moderate heap for dynamic allocation.
Lifecycle reality — plan the BOM line
Connectivity and I/O — single-chip gateway capability
With Ethernet MAC+PHY, two CAN controllers, and USB OTG on-chip, this MCU eliminates the need for external PHYs or protocol bridge chips in many designs. The 140 I/O lines include dedicated pins for the external bus interface (EBI/EMI), allowing parallel connection to an external SRAM or display controller. The 24-channel 12-bit ADC samples analog inputs from temperature sensors, current shunts, or potentiometers without an external mux.