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STMicroelectronics STM8AF6226ITCY
- Part No.:
- STM8AF6226ITCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM8AF6226ITCY.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
STM8AF6226ITCY from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit microcontroller featuring a 16 MHz STM8A core, 8 Kbyte Flash memory with 20-year data retention at 55 °C, 640 byte true data EEPROM (300 kcycle endurance), 1 Kbyte RAM, 10-bit ADC with 7 muxed channels, LIN 2.2-compliant UART, SPI up to 8 Mbit/s, and I²C up to 400 Kbit/s. It operates from 3–5.5 V and supports ambient temperatures up to 150 °C, targeting engine control units and body electronics modules.
For engineers reviewing the STM8AF6226ITCY datasheet, STM8AF6226ITCY pinout, STM8AF6226ITCY application, or STM8AF6226ITCY equivalent, key selection criteria include AEC-Q100 qualification, high-temperature operation (150 °C), LIN 2.2 compliance, integrated data EEPROM endurance, and LQFP32 package compatibility with automotive PCB layouts.
Technical Context
The STM8AF6226 implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, supporting up to 16 MHz CPU frequency across its full voltage range (3–5.5 V). Its clock system integrates user-trimmable 16 MHz RC and low-power 128 kHz RC oscillators, plus external crystal support and clock security monitoring.
Interrupt handling uses a nested controller with 32 vectors and up to 28 external interrupts on 7 vectors. Peripheral timing relies on three dedicated timers: TIM1 (16-bit advanced control with dead-time insertion), TIM5 (16-bit general-purpose), and TIM6 (8-bit basic), all supporting configurable prescalers and capture/compare modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard core with 3-stage pipeline; enables deterministic real-time execution for safety-critical automotive tasks. |
| Max CPU Frequency | 16 MHz at 3–5.5 V supply; guarantees consistent timing performance across automotive battery voltage fluctuations. |
| Flash Memory | 8 Kbyte program Flash with 20-year data retention at 55 °C after 1 kcycle; suitable for long-life ECU firmware storage. |
| Data EEPROM | 640 byte true data EEPROM with 300 kcycle endurance; supports robust parameter logging and calibration storage. |
| ADC Resolution | 10-bit SAR ADC with ±1 LSB INL/DNL, 7 muxed input channels + 1 internal reference channel; enables precise sensor signal acquisition. |
| LIN Interface | LINUART compliant with LIN 2.2 specification, supporting master/slave modes with automatic resynchronization; meets automotive sub-network communication requirements. |
| Operating Temperature | −40 °C to +150 °C ambient; certified for under-hood applications including engine control and transmission modules. |
| Supply Voltage Range | 3.0 V to 5.5 V; compatible with both 3.3 V and 5 V automotive subsystems without level-shifting. |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad; RoHS-compliant, automotive-grade molding compound rated for 150 °C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD powers core/peripherals; VSS provides low-noise return path for analog/digital sections. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external watchdog or power-monitor IC assertion. |
| PA0–PA7 | General-purpose I/O port A | 8-bit bidirectional port with high-sink capability (20 mA per pin); configurable as analog inputs or timer channels. |
| PB0–PB7 | General-purpose I/O port B | 8-bit bidirectional port supporting LINUART TX/RX, SPI SCK/MOSI/MISO, and I²C SCL/SDA alternate functions. |
| PC0–PC7 | General-purpose I/O port C | 8-bit port with TIM1 complementary outputs (CH1/CH2/CH3), ADC channel inputs, and SWIM debug interface pins. |
| PD0–PD7 | General-purpose I/O port D | 8-bit port supporting TIM5 channels, auto-wakeup timer input, and external interrupt sources (EXTI0–EXTI7). |
| SWIM | Single-wire interface module | 2-pin debug interface (SWIM + VSS) enabling in-circuit programming and real-time debugging without JTAG overhead. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +150 °C operation with full electrical characterization; required for engine control and transmission ECUs. |
| Integrated data EEPROM | 640 byte true EEPROM with 300 kcycle write endurance and 20-year data retention at 55 °C; eliminates need for external nonvolatile memory. |
| Advanced control timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, programmable dead-time insertion, and synchronization with other peripherals. |
| LIN 2.2-compliant UART | Hardware LIN transceiver supporting master/slave modes, automatic baud rate detection, and resynchronization on bus errors. |
| Low-power modes | Wait, auto-wakeup, and Halt modes with user-definable clock gating; reduces current consumption to <1.5 µA in active halt mode at 3.3 V. |
| Robust I/O design | Immunity against current injection up to 100 mA; ensures reliable operation in electrically noisy automotive environments. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Real-time monitoring of crankshaft position, throttle angle, and coolant temperature in gasoline direct injection systems. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop fuel injection and spark timing algorithms with sub-microsecond timer resolution. Use Value: TIM1's dead-time insertion and complementary outputs directly drive high-side/low-side gate drivers for ignition coil control. |
Use Scenario: Centralized management of door locks, window lifts, interior lighting, and mirror adjustment in premium vehicles. IC Role / Device Role / Timing Role: LIN master node coordinating communication with distributed slave nodes (e.g., seat control, mirror ECU). Use Value: Integrated LINUART eliminates external transceiver, reducing BOM cost and PCB area while maintaining LIN 2.2 compliance. |
| Transmission Control Unit (TCU) | Heating/Ventilation/Air Conditioning (HVAC) |
|
Use Scenario: Gear selection logic, solenoid valve actuation, and torque converter clutch control in 6-speed automatic transmissions. IC Role / Device Role / Timing Role: Safety-critical controller managing PWM-driven solenoids with hardware fault detection via TIM1 fault inputs. Use Value: 150 °C operating temperature rating enables placement near transmission housing without heatsinking. |
Use Scenario: Blower motor speed regulation, blend door actuator control, and cabin temperature feedback in climate control systems. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating NTC thermistor readings, humidity data, and CAN/LIN commands. Use Value: 10-bit ADC with internal reference and analog watchdog enables accurate, drift-compensated temperature measurement across full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AF6223ITCY | 4 Kbyte Flash, same 640 byte EEPROM, identical peripheral set and package; lower memory density. | Suitable for cost-sensitive BCM or HVAC modules with smaller firmware footprints. | Select when firmware size ≤ 4 Kbyte and BOM cost optimization is prioritized over future scalability. |
| RL78/F13-CD-TPFB | Renesas RL78 core, 16 MHz max, 32 Kbyte Flash, 4 Kbyte RAM, LIN 2.2, but no integrated data EEPROM. | Requires external EEPROM for calibration storage; higher code density but larger footprint. | Choose for designs needing larger program space and enhanced C compiler efficiency, accepting added component count. |
Compared with STM8AF6223ITCY, the STM8AF6226ITCY offers double Flash capacity for complex diagnostics and OTA update support; versus RL78/F13, it delivers integrated EEPROM and lower system-level BOM cost at the expense of toolchain maturity and code density.
Availability
STM8AF6226ITCY is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across extended automotive product lifecycles.
Supply support for STM8AF6226ITCY 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, specializing in automotive, industrial, and power discrete technologies with vertical manufacturing capabilities.
The STM8AF series is ST's automotive-qualified 8-bit MCU family designed specifically for cost-sensitive, high-reliability engine, chassis, and body electronics applications demanding AEC-Q100 Grade 0 compliance and 150 °C operation.
FAQ
What is the maximum junction temperature rating for STM8AF6226ITCY?
The STM8AF6226ITCY is rated for operation up to +150 °C ambient temperature and has a maximum junction temperature of +160 °C under specified thermal conditions. This rating is validated per AEC-Q100 Grade 0 requirements and confirmed in Section 10.3 of DS9884 Rev 9, enabling direct mounting on high-temperature automotive substrates without derating.
Does STM8AF6226ITCY support in-system programming via SWIM?
Yes, STM8AF6226ITCY supports single-wire in-circuit programming and debugging using the SWIM interface (pin PC7), requiring only two connections (SWIM and VSS). This interface enables full flash erase/write, breakpoint setting, and register inspection without halting real-time operation, as documented in Section 4.2.1 of the datasheet.
How many LIN nodes can STM8AF6226ITCY manage as a master?
STM8AF6226ITCY supports one LIN 2.2-compliant bus as master via its integrated LINUART peripheral. It can communicate with up to 16 slave nodes on a single LIN bus using standard identifier-based scheduling, with hardware-assisted checksum generation and automatic resynchronization on bus faults.
Is the 640-byte data EEPROM accessible during code execution?
Yes, the 640-byte true data EEPROM supports concurrent read/erase/write operations with CPU execution. Erase and write cycles are managed by hardware state machines, allowing background EEPROM updates while application code runs - a feature confirmed in Section 4.4 and Table 47 of DS9884 Rev 9.
STM8AF6226ITCY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM8A
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8A
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 28
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 640 x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 7x10b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6226ITCY FAQ
1.How can I place an order for STM8AF6226ITCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6226ITCY 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 STM8AF6226ITCY reliable?
The price and inventory of STM8AF6226ITCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6226ITCY is usually 5 days.
3.What payment methods are accepted for STM8AF6226ITCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6226ITCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6226ITCY?
STM8AF6226ITCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6226ITCY 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 STM8AF6226ITCY?
For technical support, including STM8AF6226ITCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6226ITCY requirements.
6.How does Aetrix verify that STM8AF6226ITCY is sourced from the original manufacturer or authorized distributors?
All STM8AF6226ITCY 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 STM8AF6226ITCY meets industry standards.
7.What is the process for return or replacement of STM8AF6226ITCY?
All STM8AF6226ITCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6226ITCY, 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 STM8AF6226ITCY part is unused and in its original packaging.
Return procedure for STM8AF6226ITCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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