Atmel - Part Numbers

ATSAM3U1EA-CU IC, ARM-based Flash MCU, 64KB
ATSAM3U1EB-CU IC, ARM-based Flash MCU, 64KB
ATSAM3U2EA-CU IC, ARM-based Flash MCU, 32BIT 128KB
ATSAM3U4EA-CU IC, ARM-based Flash MCU, 32BIT 256KB

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