256 KB FRAM — no more EEPROM wear-leveling
Its standout feature is 256 KB of FRAM program memory — non-volatile, fast write, and rated for 10^15 write cycles, so you can treat it like RAM that keeps its state through a power loss. No EEPROM emulation, no sector-erase delays, no wear-leveling code. The 8 KB of SRAM handles stack and scratchpad. With 54 I/O lines in a 64-LQFP package, it's sized for sensor hubs, data loggers, and wireless nodes where every microamp counts.
Peripherals and connectivity
PWM outputs handle motor or LED drive, and the watchdog timer keeps the system honest. DMA moves data without waking the core, which matters for low-power streaming from the ADC to FRAM.
