FRAM-based 16-bit MCU for low-power sensor and control designs
64 KB FRAM — what it changes for firmware and data storage
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.