64 KB FRAM — no separate EEPROM needed
Its program memory is 64 KB of FRAM — a non-volatile memory that writes at bus speed, consumes negligible power, and endures far more write cycles than Flash or EEPROM. For a design that logs data or stores calibration constants, this eliminates a separate serial EEPROM from the BOM. The 2K x 8 RAM handles the stack and small buffers. Thirty-one general-purpose I/O lines, plus I²C, SPI, and UART serial interfaces, cover typical sensor-node and control-panel connectivity.