ARM Cortex-M4F at 80 MHz — control-loop headroom
Program memory is 256 KB of Flash, paired with 32 KB of SRAM and 2 KB of EEPROM. The Flash holds firmware for field-updatable industrial controllers; the SRAM supports moderate buffering for USB OTG or CAN data streams.
Connectivity and I/O — CAN, USB OTG, and serial options
The CAN + USB OTG combination is a common pairing for industrial gateways that bridge a fieldbus to a local HMI or data-logger. The QEI (quadrature encoder interface) is a direct hookup for motor-feedback encoders. There are 43 general-purpose I/O lines, enough for a modest control panel with discrete sensors and actuators.
Supply range spans 1.08 V to 3.63 V. Internal oscillator means no external crystal is required for basic operation.