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STMicroelectronics STM8AF5269TAX — Microcontrollers & Processors (MCU / MPU / DSP)

STM8AF5269TAX 8-bit MCU, 24 MHz, 32 KB Flash, AEC-Q100

MPNSTM8AF5269TAX
NRND

STMicroelectronics STM8A series, STM8AF5269TAX, 8-bit MCU, 24 MHz, 32 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 52 I/O, CAN/I²C/LIN/SPI/UART, 64-LQFP, -40 to 85°C, 3V to 5.5V, AEC-Q100.

$3.2992Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AF5269TAX specifications
ParameterValue
SeriesAutomotive, AEC-Q100, STM8A
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed24MHz
PackageTape & Reel (TR)
RAM size2K x 8
Core size8-Bit
EEPROM size1K x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, I²C, LINbus, SPI, UART/USART
Number of i (O)52
Core processorSTM8A
Case64-LQFP
Data convertersA/D 16x10b
Program memory size32KB (32K x 8)

Product details

STM8AF5269TAX — automotive 8-bit MCU with CAN and LIN

24 MHz core with 52 I/O in a 64-LQFP

The 24 MHz clock speed is the ceiling for this 8-bit STM8A core — it drives the flash wait-state configuration and sets the throughput for CAN message handling and ADC sampling. With 52 general-purpose I/O lines brought out to a 64-LQFP (10x10 mm) package, the part offers enough pins to capture multiple sensor inputs and drive local actuators without an external GPIO expander. The wide 3V to 5.5V supply range means it can sit directly on an automotive battery rail (with appropriate transients handled) or a regulated 3.3V logic supply.

That means STMicroelectronics is not actively promoting it for new projects, though it remains available for existing production runs through the independent distribution channel.

Frequently asked questions

Is STM8AF5269TAX obsolete or still active?

It is not fully discontinued, but STMicroelectronics advises against using it in new designs.

What is the closest pin-compatible alternative to STM8AF5269TAX?

Within the STM8A family, several 64-pin devices share the same LQFP footprint and peripheral set. The exact alternative depends on your required Flash and RAM size; ST's STM8A selection guide lists active-order-code siblings with identical pinouts. We can help identify the best match for your BOM at quote time.