The 16-bit RISC architecture delivers deterministic instruction timing — useful for time-critical interrupt handlers without a cache.
On-chip peripherals include a 10-bit ADC with 8 channels, a DMA controller, two 16-bit timers with PWM, and a watchdog timer. Serial interfaces cover I²C, SPI, and UART — enough to talk to common sensors, displays, and radio modules. The internal oscillator trims to ±1% accuracy over temperature, saving a crystal on low-cost boards.
20-TSSOP package — board footprint and rework
Housed in a 20-lead TSSOP (4.4 mm wide, 0.65 mm pitch), this is a fine-pitch SMD package that needs a stencil and reflow profile. The 16 available I/O pins are enough for a keypad, LED indicators, and a serial bus in a control panel.