AT90CAN128- AVCC pin as INPUT | AVR Freaks
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GETTING STARTED WITH AVR MICROCONTROLLER
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Programming AVR: a helpful header file with input/output macro functions - Tutorials - RobotShop Community
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How to use all available pins on Leonardo (atmega32U4) - Product Design - Arduino Forum
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Controlling AVR I/O ports with AVR-GCC - Embedds
Tiny AVR Programmer Hookup Guide - learn.sparkfun.com
AVR I/O Port Programming - javatpoint
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ATmega328P Pinout Diagram, Pin Configuration, Brief Description & Datasheet - Components Info
Getting Started with AVR: Using Pin Change Interrupts (#5) - YouTube
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AVR basics: reading and writing GPIO pins - Machina Speculatrix
Using the AVR RESET Pin as an Input - Wayne's Tinkering Page
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AVR Microcontroller. Toggle LED's Using a Push Button Switch. Push Button Debouncing. - ATMega32 AVR
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Digital Input/Output Ports on AVR - Developer Help
ATtiny2313 Input Pins
How to handle digital input/output(I/O) in Avr Microcontroller
