Package and board-fit — 100-LQFP with 14x14 mm body
The STM32L073VZT3 ships in a 100-LQFP package with a 14x14 mm body.
On-chip memory — 192 KB Flash, 20 KB RAM, 6 KB EEPROM
192 KB of Flash program memory paired with 20 KB of SRAM and 6 KB of embedded EEPROM means sensor-fusion firmware with a calibration table and bootloader fits without external serial memory. The EEPROM handles field parameter storage at 100,000 write cycles without wear-leveling at the application layer.
An engine-bay ECU that sees 105°C on a summer grade still has 20°C of margin before the silicon's abs-max junction rating.
At the low end, 1.8V operation matches the core voltage of many MEMS sensors, eliminating a level-shifter on the SPI/I²C bus.
Connectivity and analog — USB, I²C, SPI, 16-channel ADC, dual DAC
The 16-channel 12-bit ADC captures multiple analog inputs without an external mux; the dual 12-bit DAC drives analog outputs for set-point control or waveform generation.