ATmega328P-PU

Atmega328P-PU is a popular microcontroller; it is the heart of one of the most popular Development Board Arduino UNO R3. It is high performance, low power, 8 Bit, 32 KB Flash Memory, 28 Pin DIP AVR Advanced RISC Architecture based microcontroller. The device is picoPowered (consumes much less power than the non picoPowered device of similar configuration). It has 20 MHz CPU Clock, 3 Timers and 6 PWM Channels. The operating voltage range is 1.8V to 5.5V.   
 
MCU, 8BIT, AVR, 32K FLASH, 28PDIP
 
 Controller Family/Series: ATmega
 Program Memory Size: 32KB
 RAM Memory Size: 2KB
 CPU Speed: 20MHz
 No. of I/O's: 23
 Digital IC Case Style: DIP
 No. of Pins: 28
 Embedded Interface Type: I2C, SPI, UART
 Supply Voltage Min: 1.8V
 Supply Voltage Max: 5.5V
 Packaging: Each
 Core Size: 8bit
 EEPROM Memory Size: 1KB
 MSL: -
 No. of PWM Channels: 6
 No. of Timers: 3
 Operating Temperature Max: 85°C
 Operating Temperature Min: -40°C
 Operating Temperature Range: -40°C to +85°C
 Oscillator Type: External, Internal
 Peripherals: ACMP, ADC, POR, PWM, RTC
 Program Memory Size: 32KB
 SVHC: No SVHC (16-Dec-2013)
 Supply Voltage Range: 1.8V to 5.5V