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STMicroelectronics STM8AF6226UAY — Microcontrollers & Processors (MCU / MPU / DSP)

STM8AF6226UAY 8-bit MCU, 16 MHz, 8 KB Flash, AEC-Q100, NRND

MPNSTM8AF6226UAY
NRND

STMicroelectronics STM8A series STM8AF6226UAY 8-bit MCU, 16 MHz core, 8 KB Flash, 1K x 8 RAM, 640 x 8 EEPROM, AEC-Q100, -40°C to 85°C, 32-VFQFPN (5x5 mm), 28 I/O, I²C/LIN/SPI/UART, 7x10b ADC.

$1.2896Ref. price · indicative, final on quote
STMicroelectronics STM8AF6226UAY datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AF6226UAY 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)
Speed16MHz
PackageTray
RAM size1K x 8
Core size8-Bit
EEPROM size640 x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, LINbus, SPI, UART/USART
Number of i (O)28
Core processorSTM8A
Case32-VFQFN Exposed Pad
Data convertersA/D 7x10b SAR
Program memory size8KB (8K x 8)

Product details

Peripheral set for LIN and local control

Connectivity includes I²C, LINbus, SPI, and UART/USART — the LIN interface is the key differentiator for automotive body-electronics nodes like door modules, seat controllers, and HVAC actuator boards.

NRND — plan the last-time-buy or qualify a replacement

This means ST is not actively promoting it for new projects, though existing production runs may still be supported through a last-time-buy window. If you have an active BOM line using this MCU, now is the time to secure lifetime-buy quantities or evaluate a pin-compatible migration path within the STM8A family.

32-VFQFPN — footprint and rework notes

The package is a 32-lead VFQFN with exposed pad, 5x5 mm body (supplier device package 32-VFQFPN).

Frequently asked questions

Is STM8AF6226UAY obsolete?

It is not fully discontinued, but ST is phasing it out — new designs should avoid it, and existing BOM lines should secure last-time-buy inventory or qualify a replacement.

What is the best replacement or alternative for STM8AF6226UAY?

A migration within the STM8A family — same core, same AEC-Q100 qualification — is the logical path, but pin compatibility and peripheral set must be verified against the specific application requirements.