What this part is and where it fits
The LM3S6537-IQC50-A2T is a 32-bit ARM Cortex-M3 microcontroller from Texas Instruments' Stellaris 6000 series. It runs at 50 MHz with 96 KB of Flash program memory and 64K x 8 of SRAM, making it a mid-density MCU for control and connectivity applications. The part includes an integrated Ethernet MAC and PHY, plus I²C, SPI, SSI, UART, IrDA, and Microwire serial interfaces, along with a 4-channel 10-bit ADC, PWM, and watchdog timer. It is rated for the industrial temperature range of -40 to 85 °C and comes in a 100-LQFP surface-mount package.
Lifecycle status: obsolete — sourcing reality
Texas Instruments has marked the LM3S6537-IQC50-A2T as obsolete (EOL). No official successor is listed in the available records. This part is no longer available through franchised distribution channels.
Industrial temperature and package
The -40 to 85 °C operating range qualifies this MCU for outdoor telecom cabinets and factory-floor controllers. The 100-LQFP package (14x14 mm) is a standard footprint for mid-density MCUs.