50 MHz Cortex-M3 and the peripheral set that matters
The LM3S1162-IBZ50-A2T: The ARM Cortex-M3 core at 50 MHz handles single-cycle multiply and hardware divide, which keeps interrupt latency low for real-time tasks like PWM update or sensor polling. Two 10-bit ADC channels are integrated, enough for one or two analog feedback signals without an external converter. The internal oscillator means you can boot without a crystal, though a precision clock improves timing for baud-rate generation. The 46 I/O lines in a 108-LFBGA package mean many pins are shared with alternate functions — the BGA ball map needs careful routing to avoid signal conflicts on shared pads.
NRND status — plan the replacement now
TI lists the product status as NRND. No last-time-buy date is published in the record.
BGA assembly and rework notes
The 108-BGA (10x10 mm) package has a 0.8 mm ball pitch typical for this density. That is hand-solderable with a hot-air station and stencil, but the inner balls are hard to inspect without X-ray. The board needs a via-in-pad or microvia strategy for the center balls to escape to inner layers.