Integrated Circuits (IC)

• Maximum CPU Frequency: 20 MHz
• Architecture: 8 bit
• Program Memory (Flash): 3.5 kb
• RAM: 224 byte
• Internal Oscillator: 4 MHz
• ADC: No
• of Pins: 18
• Voltage: 2V - 5.5V
• Internal and external oscillator options:

- Precision internal 4 MHz oscillator factory calibrated to ±1% - Low-power internal 48 kHz oscillator - External Oscillator support for crystals and resonators

• Power-saving Sleep mode
• Programmable weak pull-ups on PORTB
• Multiplexed Master Clear/Input-pin
• Watchdog Timer with independent oscillator for reliable operation
• Low-voltage programming
• In-Circuit Serial Programming™ (via two pins)
• Programmable code protection
• Brown-out Reset
• Power-on Reset
• Power-up Timer and Oscillator Start-up Timer
• Wide operating voltage range (2.0-5.5V)
• Industrial and extended temperature range
• High-Endurance Flash/EEPROM cell:

- 100,000 write Flash endurance - 1,000,000 write EEPROM endurance - 40 year data retention LOW POWER FEATURES:

• Standby Current: - 100 nA @ 2.0V, typical
• Operating Current: - 12 μA @ 32 kHz, 2.0V, typical - 120 μA @ 1 MHz, 2.0V, typical
• Watchdog Timer Current: - 1 μA @ 2.0V, typical
• Timer1 Oscillator Current: - 1.2 μA @ 32 kHz, 2.0V, typical
• Dual-speed Internal Oscillator: - Run-time selectable between 4 MHz and 48 kHz - 4 μs wake-up from Sleep, 3.0V, typical