Data Storage in Program Memory: User selectable size
User Programmable Options
Up to 21 I/O pins, fully programmables: Input with pull-up resistor, Input without pull-up resistor, Input with interrupt generation, Open-drain or push-pull output, Analog Input
Up to 8 I/O lines can sink up to 20 mA to drive LEDs or TRIACs directly
8-Bit Timer / Counter with 7-Bit programmable prescaler
8-Bit Auto-reload Timer with 7-Bit programmable prescaler