32 MHz Cortex-M0+ with integrated EEPROM and analog
Housed in a 32-LQFP package (7x7 mm body), it exposes 23 I/O pins.
Memory headroom and firmware strategy
The 192 KB Flash is sized for moderate firmware images — think sensor-fusion algorithms, USB protocol stacks, or LCD segment drivers — without requiring external memory. The 20 KB SRAM supports moderate data buffers and stack depth. The 6 KB EEPROM, rated for the STM32L0 family's endurance, holds calibration constants, node IDs, and fail-safe parameters that survive power loss and firmware updates. For designs that need more RAM or code space, the STM32L0 series offers higher-density siblings, but the 192 KB/20 KB split here is the sweet spot for cost-sensitive, battery-powered edge nodes where every microamp and cent counts.
Analog integration for sensor conditioning
The 10-channel 12-bit ADC covers multiple analog inputs — thermistors, photodiodes, potentiometers — without an external multiplexer. The dual 12-bit DAC can drive analog set-points or generate reference voltages for external comparators. Combined with the internal oscillator, this MCU can run a self-contained sensor-to-actuator loop with minimal external passives.
This means no last-time-buy notice is currently in effect, and the part remains available for new design-ins and ongoing production. The base product number is STM32L082, and the device is ROHS3 compliant.