ATMEGA328-AU

8-bit Microcontrollers

Core: AVR
Program Memory Size: 32 kB
Data RAM Size: 2 kB
Data ROM Size: 1 kB
Maximum Clock Frequency: 20 MHz
ADC Resolution: 10 bit
Number of I/Os: 23 I/O
Number of ADC Channels: 8 Channel
Number of Timers/Counters: 3 Timer
Supply Voltage - Min: 1.8 V
Supply Voltage - Max: 5.5 V
Data Bus Width: 8 bit
Minimum Operating Temperature: - 40 C
Maximum Operating Temperature: + 85 C

data sheet: ATMEGA328-AU.pdf