ATMEGA324PB-AU Family Name, Microchip ATMEGA324PB-AU, 8bit AVR Microcontroller, ATmega, 20MHz, 32 kB Flash, 44-Pin TQFP

The high-performance Microchip picoPower 8-bit AVR RISC-based microcontroller combines 32kB ISP flash memory with read-while-write capabilities, 1kB EEPROM, 2kB SRAM, 39 general purpose I/O lines, 32 general purpose working registers.
Advanced RISC Architecture131 Powerful InstructionsMost Single Clock Cycle Execution32 x 8 General Purpose Working RegistersFully Static OperationUp to 20 MIPS Throughput at 20MHzOn-Chip 2-Cycle MultiplierHigh Endurance Non-Volatile Memory Segments32KBytes of In-System Self-Programmable Flash program memory1KBytes EEPROM2KBytes Internal SRAMWrite/Erase Cycles: 10,000 Flash/100,000 EEPROMData retention: 20 years at 85°COptional Boot Code Section with Independent Lock BitsIn-System Programming by On-chip Boot ProgramTrue Read-While-Write OperationProgramming Lock for Software SecurityPeripheral FeaturesPeripheral Touch Controller (PTC)Capacitive