Texas Instruments 64-LQFP LM3S5G56-IQR80-A2T

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The part number "LM3S5G56-IQR80-A2T" refers to a specific microcontroller unit manufactured by Texas Instruments. This particular model is from the Stellaris series and features an ARM Cortex-M3 core, offering high-performance 32-bit processing. It comes with 512KB of flash memory for program storage and 64KB of SRAM for data handling. The 'IQR80' signifies it has 80 pins in an LQFP package, suitable for diverse applications requiring multiple I/O interfaces. The suffix 'A2T' likely denotes its operating temperature range and/or specific manufacturing batch or configuration details.