A simple and inexpensive way to program new AVR ATtiny214, ATtiny414, ATtiny814 and Atmega microcontrollers using by the UPDI interface - ООО "НПК "Спецтехнаука"
AVR Programming: Learning to Write Software for Hardware (Make: Technology on Your Time): Williams, Elliot: 9781449355784: Amazon.com: Books
Overview | Standalone AVR Chip Programmer | Adafruit Learning System
AVR I/O Port Programming - javatpoint
Upload AVR assembly program to Arduino MicroChip Studio - Hackster.io