32-UFQFN package and board integration
The STM32L072KZU6 ships in a 32-UFQFN Exposed Pad package (5x5 mm body, 0.50 mm pitch). 23 I/O pins are available in this footprint — every pin is allocated in a dense design, so the GPIO budget needs to be mapped before layout.
Memory map and peripheral headroom
192 KB Flash (192K x 8) and 20 KB SRAM (20K x 8) — the flash holds a moderate application stack plus a bootloader, while the SRAM leaves room for a real-time OS heap and data buffers. The 6 KB embedded EEPROM (6K x 8) stores calibration constants and configuration parameters without an external serial EEPROM. The 32 MHz ARM Cortex-M0+ core handles sensor polling loops and communication stacks at that clock rate, but the flash wait-state profile determines the actual instruction throughput — budget for zero-wait execution only from SRAM. The 10-channel 12-bit ADC and dual 12-bit DAC cover a multi-sensor analog front-end without an external converter.