Obsolete — sourcing strategy for the LM3S1W16-IQR50-C1
The LM3S1W16-IQR50-C1 is classified as Obsolete per the manufacturer's product status. There is no active last-time-buy window; production has ended.
32-bit Cortex-M3 at 50 MHz — what the core delivers
Built around the ARM Cortex-M3 core, this MCU runs at 50 MHz with a 32-bit single-core architecture. The 50 MHz clock is sufficient for many control-loop, protocol-processing, and sensor-fusion tasks that don't require the higher throughput of a Cortex-M4 or M7. The core includes a single-cycle multiply and hardware divide, which helps keep interrupt latency predictable in real-time applications.
Memory footprint: 32 KB Flash, 8 KB SRAM
Program memory is 32 KB of on-chip Flash, organised as 32K x 8. Data RAM is 8K x 8. This is a small-to-mid memory tier — adequate for bootloaders, communication stacks, and moderate sensor-processing firmware. Designs requiring over-the-air update staging or large lookup tables will need to budget carefully or move to a higher-density sibling.
Supply voltage range is 1.08 V to 1.32 V — a narrow core rail that requires a clean, low-noise regulator.