DescriptionCore 8-bit microcontroller, speed 20MHz, channel 27, RAM size 2K, program storage capacity 32KB, input voltage 1.8-5.5V, package VFQFN-32 microcontroller (MCU/MPU/SOC) brand, American microchip (MICROCHIP) ATMEGA328PB MU series ATMEGA328PB, temperature -40 ° C~85 ° C