Automotive 8-bit MCU for engine-bay and body-control modules
It carries 39 general-purpose I/O, a 10-channel 10-bit ADC, and serial connectivity including I²C, LINbus, SPI, and UART/USART — the peripheral set typical for LIN slave nodes, window-lift controllers, seat-position modules, and under-hood sensor aggregators.
NRND status — plan the last-time buy or a migration
That means ST no longer targets it for new design wins, and a last-time-buy window is the typical next step. For an existing production BOM, securing enough lifetime-buy stock through the independent channel is the practical path.
Memory complement: embedded EEPROM saves a separate part
The 2 KB EEPROM on the STM8AF62A8TDY is a genuine differentiator for automotive body electronics. Calibration tables, VIN fragments, fault counters, and trim values live in EEPROM without an external serial memory chip — saving a footprint and one supply rail. The 128 KB Flash holds mid-complexity firmware for a LIN node or a local actuator controller; 6 KB RAM handles a modest stack and a few frame buffers. The 24 MHz clock is the upper speed bin in the STM8A family, so timing margin for 20 kbaud LIN messages and PWM generation at a few kilohertz is comfortable.
The 39 I/O are spread around all four sides, so a fan-out via pattern under the body is not required — the outer-row traces escape directly. No exposed thermal pad, so junction-to-ambient thermal management relies on copper pour and airflow rather than a pad via stitch.