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Amazon.com: New Replacement Remote Control for Denon AVR-4801 AVR-4802 AVR-4803 AVR-4804 AVR-4805 AVR-4806 AVR-4807 AVR-4808 AVR-4809 AV Surround Receiver : Electronics
GitHub - MCUdude/MegaCoreX: An Arduino hardware package for ATmega4809, ATmega4808, ATmega3209, ATmega3208, ATmega1609, ATmega1608, ATmega809 and ATmega808
ATmega4808/4809 Data Sheet (Rev. C) : Microchip Technology : Free Download, Borrow, and Streaming : Internet Archive
![MegaCoreX - Arduino support for ATmega4809/3209/1609/809 and 4808/3208/1608/808 - Microcontrollers - Arduino Forum MegaCoreX - Arduino support for ATmega4809/3209/1609/809 and 4808/3208/1608/808 - Microcontrollers - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/e/0/a/e0a1674ce8f10228601d95c0d74ad577e91d005f.jpeg)