Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

STMicroelectronics STM8AF62A6UDY

Name: STM8AF62A6UDY
Brand: STMicroelectronics
SKU: STM8AF62A6UDY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STM8AF62A6UDY

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 32-VFQFN Exposed Pad

Datasheet:: STM8AF62A6UDY.pdf

Description:: IC MCU 8BIT 128KB FLASH 32VFQFPN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,395

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STM8AF62A6UDY from STMicroelectronics is an AEC-Q100 Grade 0 qualified automotive 8-bit microcontroller featuring a 24 MHz STM8A core, 64 Kbyte Flash program memory, 2 Kbyte data EEPROM, 6 Kbyte RAM, 10-bit ADC with 16 channels, and integrated CAN 2.0B (1 Mbit/s), LIN, USART, SPI, and I²C interfaces. It operates from 3 to 5.5 V and supports extended temperature range up to 150 °C for engine control unit (ECU) and body electronics applications.

For engineers reviewing the STM8AF62A6UDY datasheet, STM8AF62A6UDY pinout, STM8AF62A6UDY application, or STM8AF62A6UDY equivalent, key selection criteria include CAN/LIN coexistence, high-temp reliability (150 °C), on-chip data EEPROM endurance (300 kcycle), Flash retention (20 years at 55 °C), and AEC-Q100 Grade 0 qualification for under-hood deployment.

Technical Context

The STM8AF62A6UDY implements a Harvard-architecture STM8A core with 3-stage pipeline and average 1.6 cycles/instruction throughput, delivering 10 MIPS at 16 MHz. Its clock system integrates user-trimmable 16 MHz HSI and low-power 128 kHz LSI oscillators, plus external crystal support up to 24 MHz with clock security monitoring.

Peripheral integration includes a dedicated beCAN controller compliant with ISO 11898-1, LINUART supporting LIN 2.2 master/slave with automatic resynchronization, and an advanced control timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion - enabling precise motor phase control in automotive actuators.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	STM8A 8-bit Harvard core with 3-stage pipeline; enables deterministic real-time response in safety-critical automotive firmware.
Max fCPU	24 MHz; supports time-critical control loops (e.g., fuel injection timing) at full speed across full voltage (3–5.5 V) and temperature (−40 to +150 °C) range.
Flash Memory	64 Kbyte Flash with 20-year data retention at 55 °C; sufficient for dual-bank firmware updates and bootloader storage in ECU designs.
Data EEPROM	2 Kbyte true data EEPROM with 300 kcycle endurance; retains calibration data, odometer values, and fault logs without external NV memory.
CAN Interface	High-speed CAN 2.0B compliant (1 Mbit/s); supports robust communication with engine, transmission, and chassis ECUs in distributed vehicle networks.
ADC Resolution	10-bit SAR ADC with ±2 LSB total unadjusted error (TUE) and 1 LSB linearity; provides accurate sensor signal acquisition (e.g., coolant temp, throttle position).
Operating Temp	−40 °C to +150 °C; certified per AEC-Q100 Grade 0, enabling direct placement near powertrain components without heatsinking.

Pinout & Package

LQFP64 10×10 mm package with exposed thermal pad (ECOPAD™), 64-pin quad flat configuration optimized for automotive PCB thermal management and mechanical robustness.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Power supply and ground	Dual VDD/VSS pairs ensure stable core and I/O domain operation under load transients common in 12 V automotive systems.
NRST	Active-low reset input	Internal pull-up with Schmitt trigger; supports reliable cold-start and brown-out recovery in noisy vehicle electrical environments.
PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7	General-purpose I/O ports	Up to 68 user pins with high sink capability (11 I/Os rated ≥20 mA); drive solenoids, LEDs, and relays directly without external drivers.
TX/RX (USART1)	Asynchronous serial interface	Full-duplex UART with LIN master mode and auto-resync; enables diagnostic communication via OBD-II port without external LIN transceiver.
CAN_RX / CAN_TX	CAN physical layer interface	Dedicated differential pair routed for minimal skew; connects directly to ISO 11898-compliant CAN transceiver (e.g., TJA1042) for ECU networking.

Key Features

Feature	Design Value
AEC-Q100 Grade 0 qualification	Validated for continuous operation at 150 °C ambient; eliminates derating calculations for under-hood ECU placement.
Integrated data EEPROM	2 Kbyte on-chip EEPROM with 300 kcycle write endurance; removes need for external serial EEPROM, reducing BOM count and board area.
Advanced control timer (TIM1)	16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and hardware dead-time insertion; enables single-chip 3-phase motor control for HVAC blower or radiator fan.
Low-power modes	Wait, Auto-wakeup, Halt, and Active-halt modes with configurable clock gating; achieves <1 μA standby current for battery-sensitive modules like door control units.
SWIM debug interface	Single-wire in-circuit debugging with non-intrusive real-time variable monitoring; supports field firmware updates without JTAG header footprint.

Applications

Engine Control Unit (ECU)

Body Control Module (BCM)

Use Scenario: Real-time management of fuel injection timing, ignition spark advance, and knock detection using analog sensor inputs and PWM-controlled actuators.

IC Role / Device Role / Timing Role: Primary MCU executing closed-loop combustion control algorithms with sub-microsecond interrupt latency and synchronized ADC sampling.

Use Value: Integrated 10-bit ADC with 16-channel mux and CAN 2.0B enable direct sensor-to-network signal chain without external signal conditioning or protocol translation ICs.

Use Scenario: Centralized control of lighting, window lift, mirror adjustment, and door lock functions with LIN slave coordination across distributed nodes.

IC Role / Device Role / Timing Role: Master node managing LIN cluster communication while driving high-current loads (e.g., 20 mA sink I/Os for LED indicators).

Use Value: On-chip LINUART with automatic resynchronization and 11 high-sink I/Os eliminate external LIN transceivers and driver FETs, reducing component count by ≥3 per module.

Transmission Control Unit (TCU)

Electric Power Steering (EPS) Sensor Interface

Use Scenario: Gear shift logic, clutch pressure modulation, and torque converter lock-up control using CAN messages from ECU and feedback from position/pressure sensors.

IC Role / Device Role / Timing Role: Safety-relevant controller with watchdog supervision, clock security system, and Flash read-out protection (ROP) for ASIL-B compliance support.

Use Value: AEC-Q100 Grade 0 rating and 20-year Flash retention ensure functional integrity over full vehicle lifetime (15+ years) without firmware corruption risk.

Use Scenario: Acquisition and preprocessing of torque, angle, and motor current signals from EPS motor assembly before CAN transmission to main steering ECU.

IC Role / Device Role / Timing Role: Signal conditioning hub performing synchronous multi-channel ADC sampling, digital filtering, and CAN message formatting.

Use Value: 10-bit ADC with 2 LSB TUE and hardware oversampling capability delivers ±0.5° steering angle resolution required for PAS (power-assisted steering) accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive 8-bit microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM8AF6269TDY	Same core, 32 Kbyte Flash, no CAN interface; LQFP64 package.	Lacks CAN 2.0B controller; suitable only for LIN-only or SPI/I²C-based subsystems (e.g., climate control).	Select when CAN is unnecessary and cost reduction is prioritized over future network expansion.
RL78/F13-BS	Renesas RL78 core, 128 Kbyte Flash, CAN FD capable, but only AEC-Q100 Grade 2 (125 °C max).	Higher Flash capacity and CAN FD support, but lower max operating temperature limits use in high-heat zones.	Choose for next-gen CAN FD migration paths where 150 °C operation is not required.

Compared with STM8AF62A6UDY, STM8AF6269TDY reduces Flash and omits CAN - limiting it to non-networked applications - while RL78/F13-BS trades Grade 0 thermal rating for CAN FD readiness, making STM8AF62A6UDY uniquely balanced for cost-sensitive, high-temp CAN/LIN hybrid systems.

Availability

STM8AF62A6UDY is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across automotive production lifecycles (10–15 years).

Supply support for STM8AF62A6UDY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power management ICs, with over 30 years of automotive qualification expertise and ISO/TS 16949-certified manufacturing.

The STM8AF series is designed specifically for automotive body, powertrain, and chassis applications demanding AEC-Q100 Grade 0 reliability, extended temperature operation, and integrated communication peripherals - eliminating external protocol translators and discrete memory.

FAQ

What is the maximum ambient temperature rating for STM8AF62A6UDY?

The STM8AF62A6UDY is qualified to AEC-Q100 Grade 0, supporting continuous operation from −40 °C to +150 °C ambient temperature. This rating is verified per test condition HTOL (High-Temperature Operating Life) and is documented in ST's official qualification report DocID14395 Rev 15, Section 10.3.

Does STM8AF62A6UDY include hardware support for LIN 2.2 compliance?

Yes - the integrated LINUART peripheral supports LIN 2.2 in both master and slave modes with automatic resynchronization, baud rate generation, and checksum handling per LIN specification. No external LIN transceiver is required for basic bus communication, though a physical layer transceiver (e.g., TLE7259-3GE) remains necessary for bus termination and ESD protection.

How many CAN message objects does the beCAN controller support?

The beCAN controller supports 16 message objects (mailboxes) with programmable identifier masking and FIFO buffering. Each object includes full CAN 2.0B identifier (29-bit extended or 11-bit standard), DLC, and data fields, enabling concurrent handling of multiple priority-based messages in automotive network stacks.

Is SWIM debug supported in production devices without additional hardware?

Yes - SWIM (Single-Wire Interface Module) is embedded in all STM8AF62A6UDY silicon and requires only one GPIO pin (SWIM) and ground connection. It enables full in-circuit programming, breakpoint setting, and real-time register inspection without JTAG headers or external debug probes, simplifying production line programming and field firmware updates.

STM8AF62A6UDY Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 32-VFQFN Exposed Pad

Series:: STM8A

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: STM8A

Core Size:: 8-Bit

Speed:: 24MHz

Connectivity:: I2C, LINbus, SPI, UART/USART

Peripherals:: Brown-out Detect/Reset, POR, PWM, WDT

Number of I/O:: 25

Program Memory Size:: 128KB (128K x 8)

Program Memory Type:: FLASH

EEPROM Size:: 2K x 8

RAM Size:: 6K x 8

Voltage - Supply (Vcc/Vdd):: 3V ~ 5.5V

Data Converters:: A/D 7x10b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 150°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:

STM8AF62A6UDY FAQ

1.How can I place an order for STM8AF62A6UDY through Aetrix?

Please submit a Request for Quotation (RFQ) for STM8AF62A6UDY on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM8AF62A6UDY reliable?

The price and inventory of STM8AF62A6UDY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF62A6UDY is usually 5 days.

3.What payment methods are accepted for STM8AF62A6UDY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF62A6UDY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM8AF62A6UDY?

STM8AF62A6UDY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM8AF62A6UDY order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM8AF62A6UDY?

For technical support, including STM8AF62A6UDY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF62A6UDY requirements.

6.How does Aetrix verify that STM8AF62A6UDY is sourced from the original manufacturer or authorized distributors?

All STM8AF62A6UDY products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM8AF62A6UDY meets industry standards.

7.What is the process for return or replacement of STM8AF62A6UDY?

All STM8AF62A6UDY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF62A6UDY, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM8AF62A6UDY part is unused and in its original packaging.

Return procedure for STM8AF62A6UDY:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …