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STMicroelectronics STM8AF6266IUCY — Microcontrollers & Processors (MCU / MPU / DSP)

STM8AF6266IUCY Automotive 8-Bit MCU, 16 MHz, 32 KB Flash

MPNSTM8AF6266IUCY
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STMicroelectronics STM8AF6266IUCY, STM8A series 8-bit MCU, 16 MHz, 32 KB Flash, 2 KB RAM, 1 KB EEPROM, AEC-Q100, -40°C to 125°C, 32-UFQFPN (5x5 mm) exposed pad.

$0.4000Ref. price · indicative, final on quote
STMicroelectronics STM8AF6266IUCY datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AF6266IUCY key specifications
ParameterValue
SeriesSTM8A
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 5.5V
Operating temperature-40°C ~ 125°C (TA)
GradeAutomotive
Speed16MHz
PackageTray
RAM size2K x 8
Core size8-Bit
EEPROM size1K x 8

All specifications

STM8AF6266IUCY additional specifications
ParameterValue
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI2C, LINbus, SPI, UART/USART
Number of i (O)25
QualificationAEC-Q100
Core processorSTM8A
Case32-UFQFN Exposed Pad
Data convertersA/D 7x10b
Program memory size32KB (32K x 8)

Product details

Automotive 8-bit MCU for LIN-bus and body-control nodes

The STMicroelectronics STM8AF6266IUCY is an 8-bit microcontroller from the STM8A automotive series, built around the STM8A core and qualified to AEC-Q100.

Peripherals and connectivity for automotive sensor fusion

The 7-channel 10-bit ADC handles analog inputs like throttle-position or temperature sensors without an external converter.

Package and PCB layout note

Housed in a 32-UFQFN with an exposed pad (5x5 mm body), this MCU requires a thermal-via array under the paddle to pull heat into the ground plane. The 25 I/O lines are enough for a typical LIN node with a few local sensors and a relay driver.

It is a current-production part, safe for new-design qualification and available through independent distribution.

Frequently asked questions

Is STM8AF6266IUCY AEC-Q100 qualified?

Yes, the STM8AF6266IUCY carries AEC-Q100 qualification, making it suitable for automotive applications requiring the standard stress and reliability screening.

Are there equivalents to STM8AF6266IUCY?

Within the STM8A family, pin-compatible variants differ by Flash and RAM density. Check the STM8A selection guide for exact memory and peripheral matches.