STMicroelectronics STM8A series STM8AF5286UAY, 8-bit MCU, 24 MHz, 64 KB Flash, 6K x 8 RAM, 2K x 8 EEPROM, CANbus/I²C/LINbus/UART, 25 I/O, 32-UFQFN exposed pad, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Series | STM8A |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 3V ~ 5.5V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 24MHz |
| Package | Tray |
| RAM size | 6K x 8 |
| Core size | 8-Bit |
| EEPROM size | 2K x 8 |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | CANbus, I²C, LINbus, UART/USART |
| Number of i (O) | 25 |
| Core processor | STM8A |
| Case | 32-UFQFN Exposed Pad |
| Data converters | A/D 6x10b |
| Program memory size | 64KB (64K x 8) |
That means ST still manufactures it for existing production programs, but they have signaled it will move to end-of-life — no new sockets should be designed around it. For a new design, the official replacement path is to look at the current STM8A or STM8AF automotive MCU family members that share the same pinout and peripheral map — ST's cross-reference guides will list the active successor by package and memory option.
The official replacement path is to move to a current STM8A or STM8AF automotive MCU with the same pinout and memory footprint. ST's cross-reference documentation lists active successors by package (32-UFQFPN) and memory size. For a pin-compatible swap in an existing board, check the STM8AF52xx or STM8AF62xx series parts that share the 32-pin QFN layout and peripheral set.