Skip to main content
STMicroelectronics STM8AF52AATDY — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM8AF52AATDY 8-bit MCU, 128KB Flash, AEC-Q100, 150°C

MPNSTM8AF52AATDY
NRND

STMicroelectronics STM8AF52AATDY, Automotive AEC-Q100 STM8A series, 8-bit MCU, 24MHz, 128KB Flash, 6K x 8 RAM, 2K x 8 EEPROM, CAN 2.0B, 80-LQFP, -40 to 150°C.

$6.0655Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8AF52AATDY specifications
ParameterValue
SeriesAutomotive, AEC-Q100, STM8A
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 5.5V
Operating temperature-40°C ~ 150°C (TA)
Speed24MHz
PackageTray
RAM size6K x 8
Core size8-Bit
EEPROM size2K x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, I²C, LINbus, SPI, UART/USART
Number of i (O)68
Core processorSTM8A
Case80-LQFP
Data convertersA/D 16x10b
Program memory size128KB (128K x 8)

Product details

150°C-rated 8-bit MCU with CAN — the automotive BOM workhorse

This is the part you spec when the ECU sits near the engine or in a transmission controller — the 150°C junction rating and CAN interface are the differentiators.

NRND — plan the last-time buy or the migration now

This is not an immediate EOL, but it signals that the part is in the phase-out pipeline — no new sockets should be opened with it. For existing production, the NRND status means you have a window to secure final lifetime buys through independent distribution.

CAN, 150°C, and 80-LQFP — what each rating means for the BOM

The CAN 2.0B controller is the key connectivity feature — it lets this MCU talk directly on automotive powertrain and body networks without an external CAN transceiver (though you still need a transceiver for the physical layer). The 150°C operating temperature is the headline environmental spec: it covers under-hood, engine-bay, and transmission environments where standard 85°C or 105°C parts would fail.

Frequently asked questions

Is STM8AF52AATDY obsolete or NRND?

It is not yet discontinued, but the NRND status means it is in the phase-out lifecycle stage. For existing designs, plan for a last-time buy or a migration to a successor part.