ATtiny25/ATtiny45/ATtiny85 Features:

• 2/4/8K Bytes of In-System Self-Programmable Flash
• 128/256/512 Bytes In-System Programmable EEPROM
• 128/256/512 Bytes Internal SRAM
• Two 8-bit timer/counters with PWM and prescaler
• 10-bit ADC
• USI-Universal Serial Interface
• debugWIRE for on-chip-debug
• Up to 20 MIPS throughput at 20 MHz (25, 45, 85)
• 1.8 - 5.5 V operation (25V, 45V, 85V)