Memory sizing — the BOM-fit check
128 KB Flash is the mid-range option in the STM32L0 family; it holds a FreeRTOS kernel, a USB stack, and a modest application layer without pushing the link map. The 20 KB SRAM is tight for large frame buffers but adequate for typical sensor fusion and control loops. The 6 KB EEPROM is the real space-saver: it stores device serial numbers, calibration coefficients, and fail-safe parameters without needing a separate memory IC or wasting Flash pages for emulation.
Housed in a 100-pin LQFP (14x14 mm body), this is a hand-solderable and rework-friendly package — no hidden balls, no stencil alignment drama.
ST lists the STM32L083VBT6TR as Active. That means ongoing production, no last-time-buy window to chase, and standard lead times through distribution. For a production BOM this removes the single-source anxiety that haunts NRND or EOL parts. The base product number is STM32L083, so any future die shrinks or package variants will carry the same base code.
