FRAM-based 16-bit MCU for low-power sensor and control designs
Its standout feature is 64 KB of FRAM program memory — non-volatile, fast to write, and tolerant of 10^15 write cycles, which eliminates the erase-before-write penalty of Flash and lets you treat it like a unified memory for code and data logging.
64 KB FRAM — what it changes for firmware and data storage
FRAM writes at bus speed with no erase cycle, so you can update configuration tables or log sensor data in real time without wearing out the memory. The 64 KB (64K x 8) FRAM array is unified — you partition it between code and data as needed, and the 2K x 8 RAM handles stack and scratchpad. For a design that needs frequent field updates or persistent data logging, this part saves you an external EEPROM and the associated I²C/SPI traffic.
Supply range and logic-level compatibility
All GPIOs and serial interfaces are 3.3 V tolerant, so it interfaces directly with common 3.3 V sensors, radios, and memory without level shifters.