Microchip, 8bit 8 bit CPU, ATmega Microcontroller, 20MHz, 32 kB Flash, 32-Pin TQFP

The high-performance Microchip's ATmega328PB is an 8-bit AVR® RISC-based microcontroller (MCU) with picoPower® technology. It combines 32kB ISP Flash memory with read-while-write capabilities, 27 general purpose I/O lines, 32 general purpose working registers, five flexible timer/counters with compare modes, internal and external interrupts, two USARTs with wake-up on start of transmission, two byte-oriented 2-wire serial interfaces, two SPI serial ports, 8-channel 10-bit A/D converter.

Advanced RISC Architecture
131 Powerful Instructions
Most Single Clock Cycle Execution
Fully Static Operation On-Chip 2-Cycle Multiplier
High Endurance Non-Volatile Memory Segments