Lifecycle reality — NRND, not obsolete
The LM3S1512-IBZ25-A2T: For a BOM that already carries this order code, the NRND status is a signal to evaluate a migration path before the part enters full EOL.
Core architecture and memory fit
Built around the ARM Cortex-M3 core running at 25 MHz, this is a 32-bit single-core MCU from the Stellaris 1000 series — the Cortex-M3 delivers a balanced mix of deterministic interrupt response and code density for control-loop and sensor-fusion tasks. On-chip memory comprises 96 KB of Flash (96K x 8) and 64 KB of SRAM (64K x 8). The Flash is sufficient for a moderate application stack plus a bootloader; the SRAM leaves room for a real-time OS heap and data buffers without external memory.
Package, supply, and temperature grade
Housed in a 108-ball LFBGA (10x10 mm body), the 0.80 mm ball pitch demands a multi-layer PCB for fan-out — a four-layer board with microvias is typical for this footprint. The supplier device package is 108-BGA (10x10).
On-chip peripherals include a brown-out detect/reset, POR, PWM, and a watchdog timer. Two 10-bit ADCs handle analog inputs without an external converter for basic sensor acquisition.