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STMicroelectronics STM8AF52A6UCY — Microcontrollers & Processors (MCU / MPU / DSP)

STM8AF52A6UCY 8-bit MCU, Automotive Grade, 24 MHz

MPNSTM8AF52A6UCY
End of Life

STMicroelectronics STM8A series STM8AF52A6UCY, 8-bit MCU, 24 MHz, 128 KB Flash, 6 KB RAM, 2 KB EEPROM, 25 I/O, CAN/I2C/LIN/UART, -40°C to 125°C, 32-UFQFPN.

$5.2600Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AF52A6UCY 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
RAM size6K x 8
Core size8-Bit
PackageTray
EEPROM size2K x 8

All specifications

STM8AF52A6UCY additional specifications
ParameterValue
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, I2C, LINbus, UART/USART
Number of i (O)25
QualificationAEC-Q100
Core processorSTM8A
Case32-UFQFN Exposed Pad
Data convertersA/D 6x10b
Program memory size128KB (128K x 8)

Product details

Automotive-grade 8-bit MCU with CAN and LIN

The 32-UFQFPN package (5x5 mm) with exposed pad keeps the footprint small for space-constrained ECU and sensor-module designs.

128 KB Flash, 6 KB RAM, 2 KB EEPROM — memory budget for body-control firmware

The 128 KB Flash is sized for mid-complexity automotive body-control or LIN-node firmware, with the 6 KB RAM handling stack and moderate data buffers. The separate 2 KB EEPROM (not emulated Flash) stores calibration constants and fault logs without wear-leveling overhead — a real advantage over parts that require EEPROM emulation in Flash.

CAN, LIN, I2C, UART — the connectivity set for automotive subnets

Built-in CAN and LIN controllers let this MCU talk directly on vehicle body and powertrain buses without an external transceiver interface chip (though a transceiver is still needed for the physical layer). The I2C and UART ports handle local sensor and actuator links. With 25 I/O, it covers a typical mix of switch inputs, PWM outputs, and diagnostic lines.

Frequently asked questions

Is STM8AF52A6UCY obsolete?

The part status is 'Not For New Designs', so buyers need to know if it can still be used in new projects or if they must find a replacement.

What is the replacement for STM8AF52A6UCY?

For buyers designing new systems or replenishing stock, a direct replacement is critical to avoid redesign and secure supply.

Where can I buy STM8AF52A6UCY?

Buyers need to locate authorized distributors with current stock to ensure genuine parts and minimal lead times.

What is the pinout of STM8AF52A6UCY?

Design engineers require the pin layout for PCB integration and to verify compatibility with existing footprints.

What is the price of STM8AF52A6UCY?

Sourcing buyers need up-to-date pricing for BOM costing and budget approval.

Is STM8AF52A6UCY compatible with STM8AF52A6?

Engineers comparing similar part numbers need to know if they can be swapped without board layout changes.