ATmega328PU 8-bit AVR Microcontroller with 28 Pin IC Socket

• 8-Bit Core
• 20MHz
• 32K flash (program memory)
• 1K EEPROM (non-volatile storage)
• 2K RAM (working runtime memory)
• 2.7 V ~ 5.5 V Supply Voltage
• 23 Digital I/O Pins
• 6×10 bit A/D Converters
• I²C, SPI, UART/USART Hardware Protocols
• 28-DIP (Dual Inline Package)