AVR ATmega Family ATmega328 Series Microcontrollers 8-bit Microcontrollers:

The high-performance Microchip 8-bit AVR RISC-based microcontroller combines 32KB ISP flash memory with read-while-write capabilities, 1KB EEPROM, 2KB SRAM, 32 general purpose working registers, programmable watchdog timer with internal oscillator, and five software selectable power saving modes. The device operates between 1.8-5.5 volts.

• AVR core, Up to 20 MIPS Throughput at 20 MHz
• FLASH: Upto 32KB, EEPROM: Upto 1KB, RAM: Upto 2KB
• Interfaces: USART, SPI, I2C.
• 10-Bit ADC
• Upto 23 General Purpose Input Output Pins
• 2 x 8-Bit, 1 x 16-Bit Timers
• External and internal interrupt sources
• 6x PWM channels
• On-chip analog comparator
• Applications: Electronic Toys, Motor Drive & Control, Lighting