Model:ATMEGA328-AU BRAND:Microchip description:IC MCU 8BIT 32KB FLASH 32TQFP pack:tray SERIES:AVR? ATmega status:in stock Core processor:AVR Core specifications:8-bit Speed:20MHz Peripherals:Undervoltage detection/reset,POR,PWM,WDT I/O number:23 Program storage capacity:32KB(16K x 16) Program memory type:Flash memory EEPROM capacity:1K x 8 RAM size:2K x 8 Voltage - powered by:1.8V ~ 5.5V Data converter:A/D 8x10b Oscillator type:bosom Operating temperature:-40°C ~ 85°C(TA) Type of installation:Surface mount type Encapsulation/Shell:32-TQFP Supplier device packaging:32-TQFP(7x7)