2 KB Flash, 256 B RAM — sizing the firmware budget
The 16 MHz clock speed, driven by an internal oscillator, is enough for periodic ADC sampling and I²C/SPI transactions without external timing components. The 8-channel 10-bit ADC handles basic analog inputs — thermistor, potentiometer, or current-sense resistor — while the USI module provides I²C or SPI connectivity to external sensors or memory.
Brown-out reset and power-on reset are built in, so the core starts cleanly as the rail ramps.
It is not qualified for under-hood or engine-bay environments where extended temperature or AEC-Q100 grade is required. The 20-pin PDIP package (0.300" width) is through-hole only — plan for hand-assembly or wave-solder if your line is surface-mount only.
For volume commitments, request a factory lead-time quote through your preferred distributor.