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Atmel AT80C51RA2-3CSUM IC MCU 8BIT ROMLESS 40PDIL Part. AT80C51RA2-3CSUM Manufacture Atmel Description IC MCU 32BIT 128KB FLASH 80LFQFP Core 80C51 Core Size 8-Bit Speed 40/20MHz ROM - RAM 512 x 8 ...