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STMicroelectronics STM8AF6269TCX
- Part No.:
- STM8AF6269TCX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM8AF6269TCX.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,991
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Product details
Overview
STM8AF6269TCX 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 STM8AF6269TCX datasheet, STM8AF6269TCX pinout, STM8AF6269TCX application, or STM8AF6269TCX equivalent, key selection considerations include its automotive-grade CAN/LIN timing accuracy, high-temperature operation up to 150 °C, Flash/data EEPROM retention (20 years at 55 °C), 300 kcycle EEPROM endurance, and nested interrupt controller supporting 37 external interrupts.
Technical Context
The STM8AF6269TCX implements a Harvard-architecture STM8A core with 3-stage pipeline and 1.6 cycles/instruction average execution efficiency, delivering 10 MIPS at 16 MHz. Its clock system integrates trimmable 16 MHz HSI and 128 kHz LSI oscillators plus external crystal support, all monitored by a dedicated clock security system (CSS).
Peripheral integration includes a CAN 2.0B controller compliant with ISO 11898-1, LIN 2.2–compliant LINUART with automatic resynchronization, and a 10-bit ADC achieving 2 LSB total unadjusted error (TUE) and 1 LSB linearity-critical for precision sensor interfacing in harsh automotive environments.
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 tasks. |
| Max fCPU | 24 MHz; supports time-critical control loops (e.g., ignition timing, fuel injection) at full speed across full temperature range. |
| Flash Memory | 64 Kbyte; retains firmware for 20 years at 55 °C-ensures long-term reliability in under-hood applications. |
| Data EEPROM | 2 Kbyte true EEPROM; withstands 300 kwrite cycles for durable parameter storage (e.g., calibration data, odometer values). |
| CAN Interface | High-speed CAN 2.0B up to 1 Mbit/s; meets ISO 11898-1 physical layer requirements for robust vehicle network communication. |
| ADC Resolution | 10-bit with 2 LSB TUE and 1 LSB linearity; delivers accurate analog sensing (e.g., coolant temp, throttle position) without external calibration. |
| Operating Temp | –40 °C to +150 °C; certified per AEC-Q100 Grade 0-qualified for direct placement near powertrain components. |
| Supply Voltage | 3.0 V to 5.5 V; accommodates wide automotive battery voltage transients (e.g., load dump, cold crank). |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch) with 64 pins; thermally enhanced for sustained operation at 150 °C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure low-noise core and I/O domain separation; supports stable operation during EMI-heavy engine cranking. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7 | General-purpose I/O | Up to 68 user pins with 11 high-sink capability (20 mA); immune to current injection-reduces need for external protection in noisy harness environments. |
| PD3/PD4 | CAN_H/CAN_L | Dedicated differential CAN bus interface; internal termination and slew-rate control meet ISO 11898-2 EMC requirements. |
| PA3/PA4 | LIN_TX/LIN_RX | Hardware LINUART supporting master/slave modes and automatic resynchronization-enables plug-and-play node addressing in body networks. |
| PC0/PC1 | USART TX/RX | Full-duplex asynchronous communication with clock output option for synchronous slave mode-supports diagnostic flash programming via UART bootloader. |
| PC3/PC4 | SPI SCK/MOSI | 10 Mbit/s SPI master/slave interface; supports daisy-chained sensors (e.g., pressure, position) with hardware CRC for data integrity. |
| PC5/PC6 | I²C SCL/SDA | 400 Kbit/s Fast-mode I²C with SMBus timeout and arbitration-enables reliable communication with EEPROMs and PMICs in multi-supply domains. |
| PA1 | ADC_IN1 | Analog input channel mapped to 10-bit ADC; supports single-ended or differential sampling with programmable sampling time for noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Control Timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and dead-time insertion-enables precise 3-phase motor gate drive without external logic. |
| Auto-wakeup Timer | Low-power 8-bit timer with independent clock source (LSI); allows periodic wake-up from Halt mode every 1–65535 ms-extends battery life in always-on modules. |
| SWIM Debug Interface | Single-wire debug with non-intrusive real-time variable monitoring; requires only one pin and no dedicated debug clock-minimizes PCB routing overhead. |
| Window Watchdog | Configurable time window prevents spurious resets while detecting software hangs-meets ASIL-B functional safety requirements for basic control functions. |
| Flash Read-out Protection | Hardware-enforced ROP level 1/2 blocks unauthorized firmware extraction via SWIM-protects proprietary algorithms in Tier-1 ECUs. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time monitoring of crankshaft position, throttle angle, and coolant temperature for closed-loop fuel injection and spark timing. IC Role / Device Role / Timing Role: Primary control MCU executing deterministic 100 µs control loops; CAN handles powertrain messaging; ADC samples analog sensors at 1 MSPS aggregate rate. Use Value: 150 °C rating allows direct mounting on valve cover; 20-year Flash retention eliminates field reflash needs over vehicle lifetime. |
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC via LIN sub-nodes and CAN gateway functions. IC Role / Device Role / Timing Role: LIN master coordinating up to 16 slave nodes; CAN gateway relaying messages between powertrain and body networks; PWM timers driving LED dimming. Use Value: Integrated LINUART with auto-resync tolerates ±15% baud rate drift-eliminates external crystal for LIN slaves, reducing BOM cost. |
| Battery Management System (BMS) | Electric Power Steering (EPS) |
Use Scenario: Monitoring cell voltages, pack temperature, and charge/discharge current in 12 V lead-acid or 48 V mild-hybrid battery packs. IC Role / Device Role / Timing Role: ADC reads 16-cell stack via multiplexed inputs; EEPROM stores cycle count and fault logs; CAN reports SOC/SOH to gateway. Use Value: 2 Kbyte EEPROM endurance (300 kcycles) ensures >10-year logging durability even with 100 writes/day. |
Use Scenario: Torque assist calculation and motor phase commutation in brushless DC steering motors. IC Role / Device Role / Timing Role: TIM1 generates synchronized 3-phase PWM with dead-time control; CAN receives torque commands; ADC measures motor current and temperature. Use Value: Hardware dead-time insertion prevents shoot-through in inverter bridges-reduces thermal stress and improves system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AF6286TCX | 128 Kbyte Flash, same peripherals and package; higher memory density for complex diagnostics or OTA update buffers. | Preferred for next-gen ECUs requiring dual-bank Flash for safe firmware updates. | Select when >64 Kbyte code space is needed without changing PCB layout or toolchain. |
| NXP S9S12G128F0MLH | 16-bit S12X core, 50 MHz max, 128 Kbyte Flash; different architecture, instruction set, and peripheral register map. | Used in legacy S12-based platforms where migration path prioritizes toolchain continuity over cost reduction. | Choose only if existing S12 software investment outweighs STM8's lower power and smaller die size. |
Compared with STM8AF6286TCX, the STM8AF6269TCX trades Flash capacity for lower unit cost and reduced static power; versus the S9S12G128F0MLH, it offers superior active power efficiency (6.5 mA @ 16 MHz vs. 12 mA) and smaller footprint-advantageous for space-constrained EPS modules.
Availability
STM8AF6269TCX is available at Aetrix Electronics and suitable for engine control units, body control modules, battery management systems, and electric power steering applications requiring stable component supply across extended automotive lifecycles.
Supply support for STM8AF6269TCX 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 ICs, sensors, and automotive-grade silicon for industrial and transportation markets.
The STM8AF series is ST's automotive-qualified 8-bit MCU family targeting cost-sensitive, high-reliability applications such as powertrain, chassis, and body electronics-designed to meet AEC-Q100 Grade 0 and ISO 26262 ASIL-B readiness requirements.
FAQ
What is the maximum operating temperature and qualification standard for STM8AF6269TCX?
The STM8AF6269TCX is rated for continuous operation from –40 °C to +150 °C and is fully qualified to AEC-Q100 Grade 0 standards. This certification covers stress testing for temperature cycling, humidity, and mechanical shock-ensuring reliability in under-hood locations like transmission control units and exhaust gas recirculation (EGR) valves.
Does STM8AF6269TCX support in-circuit debugging and programming?
Yes, it features a Single-Wire Interface Module (SWIM) that enables non-intrusive in-circuit debugging, real-time variable observation, and Flash programming using ST-LINK/V2 or compatible debug probes. SWIM requires only one dedicated pin (SWIM) and operates independently of the main clock, allowing full visibility even during low-power modes.
How does the LINUART peripheral differ from a standard UART in this device?
The LINUART integrates hardware LIN protocol support-including automatic baud rate detection, sync field handling, checksum generation/verification, and resynchronization on header errors-without CPU intervention. Unlike generic UARTs, it natively complies with LIN 2.2 specifications and supports both master and slave roles, reducing firmware overhead in body network nodes.
What packaging and RoHS compliance status does STM8AF6269TCX have?
The STM8AF6269TCX is supplied in a RoHS-compliant, halogen-free LQFP64 package (10 × 10 mm, 0.5 mm pitch) with matte tin lead finish. It meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and is qualified for reflow soldering per IPC/JEDEC J-STD-020D.2 standards.
STM8AF6269TCX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 52
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6269TCX FAQ
1.How can I place an order for STM8AF6269TCX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6269TCX 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 STM8AF6269TCX reliable?
The price and inventory of STM8AF6269TCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6269TCX is usually 5 days.
3.What payment methods are accepted for STM8AF6269TCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6269TCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6269TCX?
STM8AF6269TCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6269TCX 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 STM8AF6269TCX?
For technical support, including STM8AF6269TCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6269TCX requirements.
6.How does Aetrix verify that STM8AF6269TCX is sourced from the original manufacturer or authorized distributors?
All STM8AF6269TCX 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 STM8AF6269TCX meets industry standards.
7.What is the process for return or replacement of STM8AF6269TCX?
All STM8AF6269TCX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6269TCX, 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 STM8AF6269TCX part is unused and in its original packaging.
Return procedure for STM8AF6269TCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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