Automotive 8-bit MCU for 150°C under-hood environments
The STM8AF6248TDY: It runs at 16 MHz from an internal oscillator, with 16 KB of Flash program memory, 2 KB of RAM, and 512 bytes of EEPROM. This combination targets body-control modules, sensor nodes, and actuator drivers that must survive under-hood thermal profiles.
NRND — plan a replacement now
This means STMicroelectronics has flagged it for eventual discontinuation; new production programs should not select it. Buyers should evaluate the wider STM8A family or migrate to a newer automotive MCU series for long-term supply.
16 MHz core and memory — what fits
The 16 MHz core speed is adequate for real-time control loops in automotive body electronics — LIN message handling, PWM generation for lamp or motor drivers, and sensor polling at sub-millisecond intervals. The 16 KB Flash and 2 KB RAM limit firmware to moderate-complexity applications; a LIN slave node with a few analog inputs and a PWM output fits comfortably. The 512-byte EEPROM is useful for calibration parameters and fault codes that must survive power cycles.
AEC-Q100 and 150°C — the deployment envelope
The 150°C maximum operating temperature places it in the Grade 0 tier, suitable for under-hood and engine-compartment environments where ambient temperatures exceed the 125°C limit of standard automotive parts.