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STMicroelectronics STM8AF6286TCX
- Part No.:
- STM8AF6286TCX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM8AF6286TCX.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,808
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Product details
Overview
STM8AF6286TCX from STMicroelectronics is an AEC-Q100 Grade 0 qualified automotive 8-bit MCU featuring a 24 MHz STM8A core, 64 Kbyte Flash program memory, 2 Kbyte data EEPROM, 10-bit ADC with 16-channel multiplexing, and integrated CAN 2.0B (1 Mbit/s), LINUART, USART, SPI, and I²C interfaces. It operates from 3 to 5.5 V across –40 °C to 150 °C and targets engine control units, body electronics, and battery management systems.
For engineers reviewing the STM8AF6286TCX datasheet, STM8AF6286TCX pinout, STM8AF6286TCX application, or STM8AF6286TCX equivalent, key selection criteria include automotive-grade temperature range (–40 °C to 150 °C), CAN/LIN dual-protocol support, on-chip data EEPROM endurance (300 kcycles), Flash retention (20 years at 55 °C), and high-sink I/O capability (11 pins).
Technical Context
The STM8AF6286TCX implements a Harvard-architecture STM8A CPU with 3-stage pipeline and 1.6 cycles/instruction average, 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 CAN 2.0B controller with dedicated message RAM and automatic retransmission, LINUART compliant with LIN 2.2 (master/slave + auto-resync), and three 16-bit timers - two general-purpose (3 CAPCOM channels each) and one advanced-control timer with dead-time insertion and complementary outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard CPU with 3-stage pipeline; enables deterministic real-time response in safety-critical automotive functions. |
| Max fCPU | 24 MHz; supports time-critical control loops (e.g., fuel injection timing) without external acceleration. |
| Flash Memory | 64 Kbyte; retains code for 20 years at 55 °C - suitable for long-lifecycle automotive deployments. |
| Data EEPROM | 2 Kbyte true EEPROM; withstands 300 kwrite cycles - ideal for odometer, calibration, or fault log storage. |
| CAN Interface | High-speed CAN 2.0B (1 Mbit/s); includes dedicated message RAM and error counters for robust vehicle network communication. |
| ADC Resolution | 10-bit with ±2 LSB total unadjusted error; supports precise sensor reading (e.g., coolant temp, throttle position) across full automotive temperature range. |
| Operating Temp | –40 °C to +150 °C; certified per AEC-Q100 Grade 0 - validated for under-hood ECU placement. |
| I/O Pins | 68 user pins including 11 high-sink I/Os (20 mA sink); drives LEDs, relays, or discrete loads directly without external buffers. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, automotive-qualified surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Dual power domains: VDD powers digital core and I/Os; separate VDDA/VSSA for analog subsystem ensures ADC noise immunity. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7, PG0–PG7, PH0–PH7 | General-purpose I/O | 68 total user-configurable pins; 11 support 20 mA sink - enable direct drive of indicators, solenoids, or optocouplers. |
| PD0/PD1 | CAN TX/RX | Dedicated differential CAN bus interface with internal termination control - reduces BOM count in CAN node designs. |
| PA3/PA4 | LINUART TX/RX | Hardware LIN 2.2 transceiver with auto-resynchronization - eliminates need for external LIN transceiver in slave nodes. |
| PC0–PC5 | ADC IN0–IN5 | Analog input channels with programmable sampling time - supports multi-sensor acquisition (e.g., pressure, temp, voltage) in single scan. |
| NRST | Reset input | Active-low reset with Schmitt trigger and internal pull-up; compatible with automotive watchdog ICs and power sequencers. |
| SWIM | Single-wire debug interface | On-chip programming and debugging via single pin - simplifies production programming and field firmware updates. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for operation up to +150 °C ambient - meets stringent reliability requirements for powertrain and chassis ECUs. |
| Integrated CAN 2.0B + LINUART | Single-chip support for both major automotive serial protocols - reduces system cost and PCB area vs. dual-transceiver solutions. |
| True data EEPROM (2 Kbyte) | 300 kcycle endurance and 20-year data retention - eliminates need for external nonvolatile memory in calibration-critical applications. |
| Advanced control timer (TIM1) | 16-bit with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time - enables precise 3-phase motor control without external gate drivers. |
| Low-power modes (Wait/Halt/Auto-wakeup) | Sub-μA current in Halt mode with configurable wake sources (CAN, LIN, EXTI, AWU) - extends battery life in always-on modules. |
| Robust I/O design | Immunity to current injection per ISO 11452-4; withstands >100 mA transient injection - enhances EMC resilience in noisy vehicle environments. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time management of fuel injection timing, spark advance, and exhaust gas recirculation based on crank/cam sensor inputs. IC Role / Device Role / Timing Role: Primary controller executing closed-loop combustion control algorithms with sub-microsecond interrupt latency. Use Value: 24 MHz CPU + 10-bit ADC + CAN/LIN enables deterministic sensor fusion and actuator command delivery within <100 μs jitter. |
Use Scenario: Centralized control of door locks, window lifts, lighting, and HVAC actuators across multiple vehicle zones. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slave nodes (e.g., mirror controls) and CAN backbone (e.g., gateway). Use Value: Integrated LINUART + CAN + 68 I/Os consolidates functionality into single chip - reduces component count by ≥30% vs. multi-chip alternatives. |
| Battery Management System (BMS) | Electric Power Steering (EPS) |
Use Scenario: Monitoring cell voltages, temperatures, and state-of-charge in 12–48 V automotive battery packs with fault logging. IC Role / Device Role / Timing Role: Data acquisition and safety monitor using on-chip ADC, EEPROM, and independent watchdog. Use Value: 2 Kbyte EEPROM endurance (300 kcycles) ensures reliable storage of 10+ years of fault history without wear leveling. |
Use Scenario: Torque assist calculation and motor phase commutation in brushless DC steering motors with torque feedback. IC Role / Device Role / Timing Role: Real-time motor controller leveraging TIM1's dead-time insertion and complementary PWM outputs. Use Value: Hardware dead-time control prevents shoot-through in 3-phase inverter - eliminates risk of MOSFET failure during rapid direction changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AF6269TCX | 32 Kbyte Flash, same peripherals and package; no ADC channel expansion beyond 10-bit resolution. | Suitable for cost-sensitive body electronics where reduced code size suffices (e.g., simple LIN slaves). | Select when firmware footprint <32 KB and no additional ADC channels required - saves ~15% BOM cost. |
| STM32F042F6P6 | 32-bit ARM Cortex-M0, 32 Kbyte Flash, no native LIN; requires external transceiver for LIN 2.2 compliance. | Better suited for applications needing higher compute throughput (e.g., sensor fusion) but lacking LIN integration. | Choose only if migrating to 32-bit architecture is justified - adds software porting effort and external LIN transceiver cost. |
Compared with STM8AF6269TCX, the STM8AF6286TCX provides double Flash capacity and identical peripheral set - enabling larger firmware (e.g., OTA update stacks) without redesign. Versus STM32F042F6P6, it delivers native LIN 2.2 and automotive temperature grade out-of-box, reducing validation scope and bill-of-materials complexity.
Availability
STM8AF6286TCX is available at Aetrix Electronics and suitable for engine control units, battery management systems, and electric power steering modules requiring stable component supply throughout extended automotive product lifecycles.
Supply support for STM8AF6286TCX 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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
The STM8A automotive MCU product line targets cost-optimized, high-reliability control applications in harsh environments - emphasizing AEC-Q100 qualification, on-chip nonvolatile memory, and integrated communication peripherals for vehicle networking.
FAQ
What is the maximum operating temperature rating for STM8AF6286TCX?
The STM8AF6286TCX is rated for continuous operation from –40 °C to +150 °C ambient and is AEC-Q100 Grade 0 qualified. This specification is verified per test condition Tc = +150 °C in the official datasheet (DocID14395 Rev 15, Section 10.3), making it suitable for under-hood placement in modern ICE and hybrid powertrain systems.
Does STM8AF6286TCX support LIN 2.2 without external transceivers?
Yes - the integrated LINUART peripheral supports full LIN 2.2 compliance in both master and slave modes, including automatic resynchronization and break detection. The PA3/PA4 pins provide direct LIN bus connection; only passive termination (e.g., 1 kΩ pull-up) is required - no external LIN transceiver needed for basic node implementation.
How many CAN message objects does the on-chip CAN controller support?
The beCAN controller in STM8AF6286TCX supports 16 message objects with dedicated RAM allocation, configurable acceptance filtering, and automatic retransmission on error. This is documented in Section 5.9.5 of the datasheet and enables concurrent handling of multiple CAN IDs (e.g., engine speed, coolant temp, brake status) without CPU intervention.
Is SWIM debug interface compatible with standard STM8 programming tools?
Yes - the Single-Wire Interface Module (SWIM) is fully supported by ST's ST-LINK/V2 and ST-LINK/V2-1 debug probes, as well as third-party tools like Raisonance Ride and Cosmic C compiler toolchains. SWIM enables full read/write/debug access over a single pin, including Flash programming and real-time variable inspection during development.
STM8AF6286TCX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM8A
- Packaging:
- Tape & Reel (TR)
- 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:
- 64KB (64K 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6286TCX FAQ
1.How can I place an order for STM8AF6286TCX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6286TCX 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 STM8AF6286TCX reliable?
The price and inventory of STM8AF6286TCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6286TCX is usually 5 days.
3.What payment methods are accepted for STM8AF6286TCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6286TCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6286TCX?
STM8AF6286TCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6286TCX 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 STM8AF6286TCX?
For technical support, including STM8AF6286TCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6286TCX requirements.
6.How does Aetrix verify that STM8AF6286TCX is sourced from the original manufacturer or authorized distributors?
All STM8AF6286TCX 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 STM8AF6286TCX meets industry standards.
7.What is the process for return or replacement of STM8AF6286TCX?
All STM8AF6286TCX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6286TCX, 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 STM8AF6286TCX part is unused and in its original packaging.
Return procedure for STM8AF6286TCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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