Peripheral set and connectivity — what the 83 I/O lines enable
The STM32L4Q5VGT6: 83 I/O lines in a 100-LQFP package; the peripheral list includes an LCD controller, EBI/EMI bus for external memory, and multiple serial interfaces.
Data converters and analog
For a mixed-signal control board — say, a motor drive with current sensing or a battery monitor — these reduce the external analog front-end count.
