What the STM32L072VBT6 brings to the BOM
Memory and analog headroom at a glance
The 128 KB Flash (128K x 8) handles a full application stack plus a bootloader; the 20 KB SRAM (20K x 8) leaves room for moderate data buffers and a real-time OS heap. The 3 KB EEPROM (3K x 8) is useful for calibration constants or device identity that survive a firmware update.
STMicroelectronics lists the STM32L072VBT6 as Active, so there is no imminent end-of-life risk for production programs. The part is ROHS3 compliant.