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STMicroelectronics STM8AF6223PDAX
- Part No.:
- STM8AF6223PDAX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6223PDAX.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
STM8AF6223PDAX from STMicroelectronics is an AEC-Q100 qualified automotive-grade 8-bit MCU featuring a 16 MHz STM8A core, 8 Kbyte Flash memory with 20-year data retention at 55 °C, 640 byte 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 across –40 to 150 °C and targets engine control modules, body electronics, and LIN-based sensor nodes.
For engineers reviewing the STM8AF6223PDAX datasheet, STM8AF6223PDAX pinout, STM8AF6223PDAX application, or STM8AF6223PDAX equivalent, key selection criteria include automotive temperature range (150 °C), LIN 2.2 master/slave support with auto-resynchronization, high-sink I/O capability (21 pins), and dual RC oscillators (16 MHz user-trimmable + 128 kHz low-power) for robust clock redundancy in harsh environments.
Technical Context
The STM8AF6223PDAX implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, enabling deterministic real-time execution. Its clock system integrates a low-power crystal oscillator, internal 16 MHz RC (trimmable ±1%), and 128 kHz RC, all monitored by a clock security system with dedicated failure detection and reset generation.
Interrupt handling uses a nested controller supporting 32 vectors and up to 28 external interrupts across 7 priority levels. Peripheral integration includes an advanced 16-bit timer (TIM1) with dead-time insertion and complementary outputs for motor control, plus two general-purpose timers (TIM5, TIM6) and auto-wakeup functionality for ultra-low-power duty cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard core with 3-stage pipeline and extended instruction set for deterministic real-time control. |
| Max CPU Frequency | 16 MHz at VDD = 5 V - enables fast response in safety-critical automotive timing loops. |
| Flash Memory | 8 Kbyte with 20-year data retention at 55 °C after 1 kcycle - supports long-life field updates in under-hood applications. |
| Data EEPROM | 640 byte true EEPROM with 300 kcycle endurance - retains calibration data and fault logs without external backup. |
| ADC Resolution | 10-bit with ±1 LSB INL/DNL and scan mode - delivers accurate sensor readings (e.g., temperature, pressure) with built-in analog watchdog. |
| LIN Interface | LIN 2.2 compliant UART with automatic resynchronization - ensures reliable communication in noisy automotive networks without external transceiver. |
| Operating Temperature | –40 to 150 °C - certified for placement in engine compartments and transmission control units. |
| I/O Sink Capability | 21 high-sink outputs (up to 100 mA per pin, 400 mA total) - directly drives LEDs, relays, and solenoids without external drivers. |
Pinout & Package
LQFP32 package (7 × 7 mm, 0.8 mm pitch) with 32-pin layout optimized for automotive PCB routing and thermal dissipation in high-temperature environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; supports 3–5.5 V operation with internal voltage regulation. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/O ports | 28 configurable I/Os including 21 high-sink outputs; support alternate functions (LIN, SPI, I²C, ADC inputs, timer channels). |
| OSC_IN/OSC_OUT | Crystal oscillator interface | Connects to 1–16 MHz external crystal or ceramic resonator; enables precise timing for LIN baud rate generation. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset supervision and brown-out detection. |
| SWIM | Single-wire interface module | Enables in-circuit programming and debugging via single pin - reduces test point count and simplifies production programming. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Grade 0 (–40 to 150 °C) - validated for engine control, transmission, and chassis systems per automotive reliability standards. |
| Advanced control timer (TIM1) | 16-bit with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time - enables 3-phase motor gate driving with hardware fault protection. |
| Low-power modes | Wait, auto-wakeup, and Halt modes with user-definable clock gating - achieves sub-μA current in Halt while retaining RAM and register state. |
| Internal oscillators | 16 MHz RC (user-trimmable ±1%) + 128 kHz RC - eliminates need for external crystals in cost-sensitive LIN slave nodes. |
| Robust I/O design | Immune to current injection up to 100 mA - prevents latch-up during ESD events or load dump transients in vehicle wiring harnesses. |
| Memory protection | Write protection (WP) and read-out protection (ROP) bits - prevents unauthorized firmware access or accidental overwrite in field-deployed ECUs. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time monitoring of crankshaft position, throttle angle, and coolant temperature in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop fuel injection and ignition timing algorithms with sub-microsecond interrupt latency. Use Value: 16 MHz CPU speed and deterministic 3-stage pipeline ensure consistent loop timing; 150 °C rating allows direct mounting near engine block. | Use Scenario: Centralized management of door locks, window lifts, lighting, and HVAC actuators via LIN subnetworks. IC Role / Device Role / Timing Role: LIN master node coordinating up to 16 slave devices (e.g., seat position sensors, mirror controls) with guaranteed message scheduling. Use Value: Integrated LIN 2.2 UART with auto-resynchronization tolerates bus noise and timing drift across distributed cabin modules. |
| Transmission Control Unit (TCU) | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Gear selection logic, clutch engagement control, and torque converter lock-up management in automatic transmissions. IC Role / Device Role / Timing Role: Safety-relevant controller interfacing with CAN for higher-layer commands and analog sensors (oil temp, pressure) via 10-bit ADC. Use Value: 640-byte EEPROM stores adaptive shift patterns and fault history; AEC-Q100 Grade 0 ensures operation under transmission heat soak conditions. | Use Scenario: Signal conditioning and preprocessing of torque and steering angle sensor outputs before CAN transmission to EPS motor controller. IC Role / Device Role / Timing Role: Analog front-end processor with 10-bit ADC scan mode and analog watchdog for continuous sensor health monitoring. Use Value: ±1 LSB accuracy and internal reference measurement enable <1% torque sensing error; high-sink I/Os drive status LEDs directly on sensor housing. |
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 |
|---|---|---|---|
| STM8AF6226TAY | LQFP32 package with identical peripherals but 16 Kbyte Flash and 1 Kbyte EEPROM; same 150 °C rating. | Suitable for designs requiring larger firmware image size or extended non-volatile logging capacity. | Select when future firmware growth or enhanced diagnostic data storage is anticipated. |
| RL78/F13-BS | Renesas RL78 core (16-bit), 32 Kbyte Flash, 2.7–5.5 V, –40 to 125 °C; includes CAN 2.0B and more PWM channels. | Better suited for mixed-signal applications needing CAN connectivity or higher-resolution PWM for advanced motor control. | Choose if CAN bus integration or extended peripheral set outweighs strict 150 °C requirement. |
Compared with STM8AF6226TAY, the STM8AF6223PDAX offers lower Flash density but identical thermal performance and LIN capability-ideal for cost-optimized, thermally constrained nodes. Versus RL78/F13-BS, it trades CAN and 16-bit processing for guaranteed 150 °C operation and smaller footprint in pure LIN subsystems.
Availability
STM8AF6223PDAX is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and LIN-based sensor interfaces requiring stable component supply across automotive production lifecycles.
Supply support for STM8AF6223PDAX 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 analog products for automotive, industrial, and consumer markets.
The STM8AF automotive microcontroller line targets functional-safety-aware applications in powertrain, chassis, and body electronics, emphasizing AEC-Q100 compliance, high-temperature resilience, and integrated LIN/UART for cost-effective distributed control.
FAQ
What is the maximum operating junction temperature for STM8AF6223PDAX?
The device is rated for operation up to 150 °C ambient temperature and is qualified to AEC-Q100 Grade 0, which specifies a junction temperature limit of 175 °C under worst-case power dissipation and thermal resistance conditions. This enables direct placement in high-heat zones such as near exhaust manifolds or transmission housings without forced cooling.
Does STM8AF6223PDAX support in-system programming via SWIM?
Yes, the device features a Single-Wire Interface Module (SWIM) that enables full in-circuit programming and debugging using only one dedicated pin (SWIM). It supports flash erase/write, EEPROM modification, and real-time register inspection without halting CPU execution, streamlining production programming and field firmware updates.
How does the LIN 2.2 UART handle bus synchronization errors?
The integrated LINUART automatically detects and corrects synchronization drift between master and slave nodes by dynamically adjusting sample points during header reception. It supports both master and slave modes, includes a dedicated LIN break detection circuit, and recovers from framing errors without CPU intervention-ensuring robust communication in electrically noisy vehicle environments.
Can the internal 16 MHz RC oscillator meet LIN baud rate accuracy requirements?
Yes-the 16 MHz RC oscillator is factory-trimmed and user-adjustable over ±1%, meeting LIN 2.2's ±1.5% baud rate tolerance requirement for slave nodes. When combined with the LINUART's auto-resynchronization feature, it eliminates the need for an external crystal in cost-sensitive slave applications such as door modules or seat controllers.
STM8AF6223PDAX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- STM8A
- Packaging:
- Tube
- 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:
- 16
- 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
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6223PDAX FAQ
1.How can I place an order for STM8AF6223PDAX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6223PDAX 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 STM8AF6223PDAX reliable?
The price and inventory of STM8AF6223PDAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6223PDAX is usually 5 days.
3.What payment methods are accepted for STM8AF6223PDAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6223PDAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6223PDAX?
STM8AF6223PDAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6223PDAX 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 STM8AF6223PDAX?
For technical support, including STM8AF6223PDAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6223PDAX requirements.
6.How does Aetrix verify that STM8AF6223PDAX is sourced from the original manufacturer or authorized distributors?
All STM8AF6223PDAX 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 STM8AF6223PDAX meets industry standards.
7.What is the process for return or replacement of STM8AF6223PDAX?
All STM8AF6223PDAX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6223PDAX, 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 STM8AF6223PDAX part is unused and in its original packaging.
Return procedure for STM8AF6223PDAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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