What this MCU is and where it fits
15 MHz core — what it means for your design
At 15 MHz, this MCU handles tasks like reading a sensor, toggling a relay, or forwarding UART packets.
Package and mounting
Housed in a 20-TSSOP package (4.40 mm wide), this is a surface-mount part. It is reworkable with hot air, but not something you swap in the field with a soldering iron — plan for board-level replacement or socketed programming during prototyping. The 16 I/O pins are enough for a handful of inputs and outputs, but not for a memory bus or a parallel display.
