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STMicroelectronics STM8AF52A9TCY — Microcontrollers & Processors (MCU / MPU / DSP)

STM8AF52A9TCY 8-bit MCU, 24 MHz, 128 KB Flash

MPNSTM8AF52A9TCY
NRND

STMicroelectronics STM8A series STM8AF52A9TCY, 8-bit MCU, 24MHz, 128KB Flash, 6K x 8 RAM, 2K x 8 EEPROM, 52 I/O, CANbus, I2C, LINbus, SPI, UART/USART, AEC-Q100, -40°C to 125°C, 64-LQFP.

$6.8900Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AF52A9TCY 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
Speed24MHz
PackageTray
RAM size6K x 8
Core size8-Bit
EEPROM size2K x 8

All specifications

STM8AF52A9TCY additional specifications
ParameterValue
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, I2C, LINbus, SPI, UART/USART
Number of i (O)52
QualificationAEC-Q100
Core processorSTM8A
Case64-LQFP
Data convertersA/D 16x10b
Program memory size128KB (128K x 8)

Product details

For a production BOM that already specifies this order code, the existing allocation is still being fulfilled, but new design-ins should target the official successor or a validated second source.

Automotive-grade 8-bit MCU with CAN

On the peripheral side, it includes a CANbus controller, LINbus, I2C, SPI, and UART/USART interfaces, plus a 16-channel 10-bit ADC, PWM outputs, and a watchdog timer.

Memory and peripheral fit

The 2 KB EEPROM is useful for storing calibration parameters or fault codes that survive power loss without external EEPROM.

Frequently asked questions

Is STM8AF52A9TCY obsolete or still available?

It is not fully obsolete — existing production allocations can still be sourced — but new designs should not start with this part.

Does STM8AF52A9TCY support CAN bus?

Yes, the STM8AF52A9TCY includes a CANbus controller as one of its connectivity peripherals, alongside I2C, LINbus, SPI, and UART/USART.