Specifications:

• It has 22 I/O pins in total in which 14 are Digital (6 are PWM output) and 8 are Analog pins.
• Operating Voltage (Logic Level): 5V.
• Supports Serial, I2C, SPI Communication Protocols.
• Flash memory: 32KB in which 2KB is used by Bootloader
• Clock speed: 16MHz
• DC Current per I/O Pin: 40 mA
• SRAM : 2KB, EEPROM: 1KB
• DC Current per I/O pin: 40mA