Microchip Manufacturer 8-bit Microcontrollers - MCU Product Category SMD/SMT Mounting Style TQFP-32 Package / Case ATmega328P Series AVR Core 8 bit Data Bus Width 20 MHz Maximum Clock Frequency 32 kB Program Memory Size 2 kB Data RAM Size 10 bit ADC Resolution 23 I/O Number of I/Os 1.8 V to 5.5 V Operating Supply Voltage - 40 C Minimum Operating Temperature + 85 C Maximum Operating Temperature Tray Packaging 1 mm Height 7 mm Length MCU Product Flash Program Memory Type 7 mm Width Microchip Technology / Atmel Brand SRAM Data RAM Type 1 kB Data ROM Size EEPROM Data ROM Type I2C, SPI, USART Interface Type Yes Moisture Sensitive 8 Number of ADC Channels 3 Timer Number of Timers/Counters AVR Tradename >