24 MHz 8-bit MCU for under-hood automotive control
It runs at 24 MHz from an internal oscillator, with 64 KB of program Flash, 6 KB of RAM, and 2 KB of EEPROM — enough headroom for sensor fusion, actuator control, or LIN-node applications without external memory.
The STM8AF6286UDX carries a Not Recommended for New Designs (NRND) status. That means ST is still manufacturing it for existing production, but the window for new design-ins is closing. If you are qualifying a fresh BOM, look at the current-production STM8A siblings in the same 32-VFQFPN footprint — ST typically keeps the peripheral set and pinout consistent across the series. For an active line already using this code, secure your last-time-buy quantities through independent distribution; we can quote and source to order against an RFQ.
What the 150°C rating means for the assembly
The -40°C to 150°C operating temperature range is the full automotive junction-temperature spec — not just cabin-grade 85°C. This part is rated for exhaust-adjacent or under-hood locations where ambient air can hit 125°C and self-heating pushes the die to 150°C.
Peripheral set for LIN and local control
The STM8AF6286UDX includes I²C, LINbus, SPI, and UART/USART connectivity — the LIN interface is what typically drives the choice for automotive sub-networks (door modules, seat controllers, HVAC flaps). Seven 10-bit ADC channels handle analog sensor reads, and the built-in PWM, brown-out reset, POR, and watchdog peripherals reduce external supervisor IC count. The 25 I/O lines in the 32-pin package leave room for local switch sensing and LED drive.