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ATMEGA32U4-AU SMD 8-Bit 16Mhz Microcontroller TQFP-44 Buy With Affordable Price - Direnc.net®
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ATMEGA32U4 Datasheet - 8-Bit AVR Microcontroller - ATMEL
ATMEGA32U4 Microcontroller: Pinout, Datasheet and Equivalents
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32U4 boards - Project Guidance - Arduino Forum
A-Star 32U4 Micro Programmable Module - RobotShop
