Automotive 8-bit MCU with wide analog front-end
The STM8AL3166TCY: The standout analog peripheral set includes 22 channels of 12-bit ADC and a single 12-bit DAC, which is unusually dense for an 8-bit MCU and suits designs that digitise multiple sensor inputs without external muxing.
Supply, connectivity, and package
The 30 general-purpose I/O lines are brought out in a 32-LQFP package (7x7 mm body), which is a standard footprint for space-constrained ECU boards.
That means STMicroelectronics has flagged it for eventual discontinuation — new production designs should not start with this order code, and existing BOM lines need a qualified replacement identified before the last-time-buy window closes. The official successor is not published in the available records, so the replacement path will depend on whether the application can migrate to a newer STM8A variant (pin-compatible across the family) or requires a full redesign to a different MCU architecture.