On-chip peripherals — what the block does
Brown-out detect and reset (BOR) protects against supply glitches; a watchdog timer guards against firmware hangs. The PWM output is available on timer channels for dimming LEDs or driving small DC loads. 24 I/O pins in a 28-TSSOP package leave enough headroom for a keypad matrix and a few status LEDs alongside the serial bus.
Product status is active — no last-time-buy notice.
