16 KB FRAM — no erase penalty for data logging
Its distinguishing feature is 16 KB of FRAM program memory (16K x 8) that writes at bus speed without the erase-before-write cycle required by Flash — a real advantage for applications that log sensor data, update calibration tables, or maintain configuration parameters on every power cycle. The 2K x 8 SRAM provides scratchpad space for stack and temporary buffers. Connectivity includes I²C, IrDA, SPI, and UART/USART interfaces.
The 40-VFQFN exposed-pad package (6x6 mm body) provides a low-inductance thermal path to the PCB ground plane. The 36 general-purpose I/O pins give enough headroom for a keypad, small display, and a handful of sensors without external GPIO expanders.
This part is suitable for qualification into production BOMs without a near-term redesign trigger.