The Texas Instruments LM3S613-IQN50-C2T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 600 series, clocked at 50 MHz with 32 KB of Flash program memory and 8 KB of SRAM. It integrates a 4-channel 10-bit ADC, a PWM module, and serial interfaces including I²C, SPI, SSI, and UART/USART, making it suited for industrial control, sensor interfacing, and motor-drive communication tasks. The 48-LQFP package and -40°C to 85°C temperature range qualify it for factory-floor and outdoor telecom enclosures.
The 50 MHz Cortex-M3 core delivers enough throughput for real-time control loops running at a few kilohertz, such as PID updates in a motor drive or protocol parsing on a UART link. With 32 general-purpose I/Os and an internal oscillator, the part can handle moderate sensor fusion without an external clock source.
NRND — planning the BOM transition
This means TI has flagged it for eventual discontinuation; new designs should avoid it, and existing BOMs should plan a migration.
Memory and ADC — sizing the firmware and sensor interface
32 KB Flash and 8 KB SRAM are on-chip. The 4-channel 10-bit ADC handles temperature, pressure, or current-sense inputs.