It comes in a 100-pin LQFP package (14x14 mm body) with surface-mount termination, providing 48 general-purpose I/O lines.
16 KB Flash and 512 B RAM — sizing the firmware budget
The 16 KB Flash (16K x 8 plus 256 B) and 512 x 8 RAM bound the application code and data space. This is a fit for single-loop metering, simple human-machine interfaces with segmented LCD readouts, and sensor nodes running lightweight protocol stacks. The 8 MHz core clock is sufficient for real-time sampling of the 12-bit ADC at moderate rates without external memory expansion.
