Cortex-M3 control MCU with 50 MHz core and 256 KB flash
The LM3S1816-IQR50-C3: It carries 256 KB of on-chip flash and 32 KB of SRAM, giving the firmware stack room for a real-time OS, the application logic, and a communication buffer pool. The 50 MHz core speed sets the throughput ceiling for interrupt latency and peripheral bandwidth — a control loop sampling sensors at 10 kHz and updating a PWM output has roughly 5,000 core cycles per iteration before the next sample arrives.
Industrial temperature grade and peripheral set
Rated for -40 to 85 °C ambient, the device suits factory-floor controllers, outdoor telemetry gateways, and engine-adjacent enclosures where the board sees thermal cycling without active cooling. On-chip peripherals include an 8-channel 10-bit ADC, PWM outputs, DMA for memory-to-peripheral transfers, and a watchdog timer — enough supervisory and signal-conditioning blocks to run a motor-drive or sensor-fusion node without external glue logic. The connectivity set spans I2C, SPI, SSI, UART/USART, IrDA, and Microwire, covering the common serial buses for industrial sensors, displays, and radio modules.
The internal oscillator eliminates the external crystal for basic clocking, though an external source can be used for tighter accuracy.
Quantities are lot-specific; each unit is sourced and verified against the original TI specifications before shipment.