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STMicroelectronics STM8AF6266UAY — Microcontrollers & Processors (MCU / MPU / DSP)

STM8AF6266UAY 8-bit MCU, 16 MHz, 32 KB Flash, -40 to 85°C

MPNSTM8AF6266UAY
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STMicroelectronics STM8A series STM8AF6266UAY, 8-bit MCU, 16 MHz, 32 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 25 I/O, I²C/LIN/SPI/UART, -40 to 85°C, 32-VFQFN exposed pad.

$1.8413Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AF6266UAY specifications
ParameterValue
SeriesSTM8A
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed16MHz
PackageTray
RAM size2K x 8
Core size8-Bit
EEPROM size1K x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, LINbus, SPI, UART/USART
Number of i (O)25
Core processorSTM8A
Case32-VFQFN Exposed Pad
Data convertersA/D 7x10b
Program memory size32KB (32K x 8)

Product details

The 16 MHz clock keeps control-loop jitter low for LIN-bus body controllers and sensor-fusion nodes, while the 32 KB Flash is sized for mid-complexity firmware — enough for a window-lift module or seat-position actuator without needing external storage. The 2K SRAM handles a few buffered CAN frames or a modest state machine; if your application needs more than a handful of 8-byte messages queued, budget the RAM headroom against the 2K ceiling.

Wide supply and industrial temperature — where it runs

Peripherals and I/O — what connects

The 7-channel 10-bit ADC handles analog inputs like temperature or position sensors. PWM and WDT are on-chip for motor-drive timing and watchdog supervision.

Housed in a 32-VFQFN with exposed pad, surface-mount only.

Frequently asked questions

What is the core size of STM8AF6266UAY?

8-bit. The core processor is an STM8A 8-bit architecture running at 16 MHz.

Does STM8AF6266UAY have an internal oscillator?

Yes. The oscillator type is internal, so no external crystal is required for the main clock — saves board space and BOM cost.

What is the flash memory size of STM8AF6266UAY?

32 KB (32K x 8) of Flash program memory.

Is STM8AF6266UAY RoHS compliant?

The evidence does not explicitly state RoHS compliance status. Verify with the datasheet or supplier at quote time.