64 KB Flash and 3 KB EEPROM — what that buys the BOM
The STM32L071C8T7: 64 KB Flash and 3 KB EEPROM are on-chip. The EEPROM is a separate array for byte-wise writes without wearing the Flash.
The 1.65 V minimum supply voltage is the standout for portable designs. A single alkaline cell at end-of-life sits around 1.0 V, so this part needs a boost converter for that case — but a single Li-ion (3.0 V to 4.2 V) or two alkaline cells in series (2.4 V to 3.2 V) powers it directly with no regulator. The 3.6 V maximum also covers USB VBUS (5 V nominal) through a small LDO, which is the typical architecture for a USB-sensor dongle.
37 I/Os and 13-channel 12-bit ADC in a 48-LQFP
The 48-LQFP package (7x7 mm body) brings out 37 general-purpose I/Os — enough to drive a small TFT display parallel bus plus a few buttons and LEDs. The 13-channel 12-bit ADC covers analog inputs like a thermistor string or a multi-cell battery voltage monitor.
No last-time-buy notice, no end-of-life announcement.