8-bit MCU for automotive body control — now obsolete
The STMicroelectronics STM8AF5289TAY is an 8-bit microcontroller from the STM8A automotive series, built around the STM8A core running at 24 MHz. Connectivity covers CAN, I²C, LIN, SPI, and UART — a fit for body-control modules, gateway nodes, and sensor interfaces in automotive and industrial environments.
Obsolete — no direct replacement on record
The STM8AF5289TAY carries an official lifecycle status of Obsolete. Availability and pricing vary; each lot should be quoted to order, with date code and condition confirmed before commitment.
What the 24 MHz core and 64 KB Flash mean for fit
At 24 MHz the STM8A core delivers enough throughput for CAN message handling, LIN master/slave scheduling, and local sensor polling without a coprocessor. The 64 KB Flash is sized for mid-complexity firmware — a bootloader, communication stack, and application logic — with the 2 KB EEPROM holding calibration or configuration data across resets. The 6K x 8 RAM supports moderate buffering for CAN frames and UART streams; if your application requires larger packet buffers or a real-time OS with multiple task stacks, check the memory footprint early in the porting effort.
Sourcing this part for production or repair
Because the STM8AF5289TAY is obsolete, it is not available through standard factory distribution. For a production BOM that cannot redesign, securing a last-time-buy buffer or a qualified broker lot is the practical path.