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STMicroelectronics STM8AF6223PAU
- Part No.:
- STM8AF6223PAU
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6223PAU.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:353
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Product details
Overview
STM8AF6223PAU from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit MCU 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), and integrated 10-bit ADC with 7 muxed input channels. It supports LIN 2.2-compliant communication, SPI up to 8 Mbit/s, and I²C up to 400 Kbit/s, and operates across –40 to 150 °C for engine control unit (ECU) sensor interface applications.
For engineers reviewing the STM8AF6223PAU datasheet, STM8AF6223PAU pinout, STM8AF6223PAU application, or STM8AF6223PAU equivalent, this page delivers verified technical context, validated pin functions, automotive-grade operating limits, and real-world use cases in powertrain and body electronics systems.
Technical Context
The STM8AF6223PAU implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, enabling deterministic real-time execution in safety-critical automotive subsystems. Its clock system integrates user-trimmable 16 MHz RC and low-power 128 kHz RC oscillators, plus external crystal support with clock security monitoring.
Interrupt handling uses a nested controller supporting 32 vectors and up to 28 external interrupts on 7 vectors, while peripheral integration includes an advanced 16-bit timer (TIM1) with dead-time insertion and complementary outputs, two general-purpose timers (TIM5, TIM6), and LINUART with automatic resynchronization for robust bus communication.
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 = 3.3–5.5 V - enables fast sensor sampling and actuator response in ECU timing loops. |
| Flash Memory | 8 Kbyte program Flash with 20-year data retention at 55 °C after 1 kcycle - suitable for field-updatable firmware in long-lifecycle vehicles. |
| Data EEPROM | 640 byte true data EEPROM with 300 kcycle endurance - stores calibration data, fault logs, and configuration without external NV memory. |
| ADC Resolution | 10-bit SAR ADC with ±1 LSB INL, 7 muxed inputs + 1 internal channel - supports precision analog sensing of throttle position, temperature, and pressure. |
| Operating Temperature | –40 to 150 °C ambient - certified for under-hood placement in engine management and transmission control modules. |
| LIN Compliance | LIN 2.2 compliant UART with master/slave modes and automatic resynchronization - eliminates need for external LIN transceiver in cost-sensitive nodes. |
| Supply Voltage Range | 3.0 to 5.5 V - compatible with both 3.3 V and 5 V automotive sub-systems and tolerant of battery transients. |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 28 I/O pins including 21 high-sink outputs rated for ≥20 mA per pin - optimized for direct LED drive and solenoid interface in body control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 3.0–5.5 V supply rail; decoupled via 100 nF ceramic capacitor near pin for noise immunity in noisy automotive environments. |
| VSS | Ground reference | Digital ground return path; requires low-impedance connection to chassis ground to minimize EMI coupling in LIN/ADC operation. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2–5.5 V logic levels and supports external watchdog reset assertion. |
| PA0–PA7 | General-purpose I/O port A | 8-bit bidirectional port with configurable pull-ups, alternate functions including TIM1/ADC/LIN; PA1–PA4 support high-sink capability (≥20 mA). |
| PB0–PB7 | General-purpose I/O port B | 8-bit bidirectional port with remappable alternate functions (SPI/I²C/TIM5); PB5–PB7 support LINUART TX/RX/EN functions in default mapping. |
| PC0–PC7 | General-purpose I/O port C | 8-bit port with ADC channel inputs (PC0–PC6), TIM1 complementary outputs (PC5–PC7), and SWIM debug interface (PC7). |
| PD0–PD7 | General-purpose I/O port D | 8-bit port with TIM5 capture/compare (PD0–PD2), auto-wakeup timer input (PD3), and I²C SCL/SDA (PD4/PD5) in alternate mode. |
| SWIM | Single-wire interface module | Debug and programming interface using PC7 pin; supports in-circuit programming and real-time variable inspection without JTAG overhead. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for operation up to 150 °C ambient - meets automotive powertrain reliability requirements without derating. |
| True data EEPROM | 640 bytes with 300 kcycle endurance and 20-year retention - eliminates external EEPROM in seat control, mirror adjustment, and HVAC memory settings. |
| Advanced TIM1 timer | 16-bit with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time - enables precise 3-phase motor gate drive in electric power steering (EPS) modules. |
| LIN 2.2 UART | Integrated master/slave with automatic resynchronization and frame error detection - reduces BOM count and PCB area versus discrete LIN transceivers. |
| Robust I/O design | Immune to current injection up to 100 mA per pin - withstands load dump and ISO 7637-2 pulse 5a/b transients without latch-up. |
| Low-power modes | Wait, auto-wakeup, and active halt modes with user-definable clock gating - achieves <1.5 µA standby current for always-on LIN node wake-up functionality. |
Applications
| Engine Coolant Temperature Sensor Interface | Body Control Module (BCM) Door Lock Actuator Driver |
|---|---|
Use Scenario: Reads NTC thermistor voltage via ADC and communicates calibrated temperature over LIN bus to ECU. IC Role / Device Role / Timing Role: Analog front-end signal conditioner and LIN protocol handler with 100 ms update interval. Use Value: Eliminates external ADC and LIN transceiver; 10-bit resolution ensures ±1.5 °C accuracy across –40 to 130 °C range. |
Use Scenario: Drives dual-coil door lock solenoids using complementary PWM outputs with dead-time control. IC Role / Device Role / Timing Role: High-current I/O controller with hardware-timed PWM generation and fault-safe shutdown. Use Value: TIM1's 3 complementary outputs and dead-time insertion prevent shoot-through during coil commutation, reducing thermal stress on MOSFET drivers. |
| Automotive HVAC Blower Motor Controller | Seat Position Memory System |
Use Scenario: Regulates DC blower speed via PWM output while monitoring current sense feedback and cabin temperature. IC Role / Device Role / Timing Role: Closed-loop motor controller with ADC-based current sensing and 16-bit PWM resolution. Use Value: TIM5 provides 16-bit PWM at 20 kHz switching frequency; ADC measures shunt voltage with ±1 LSB linearity for accurate torque control. |
Use Scenario: Stores and recalls three seat position presets using onboard EEPROM and responds to LIN commands from central gateway. IC Role / Device Role / Timing Role: Non-volatile configuration manager with LIN slave interface and secure write protection. Use Value: 640-byte EEPROM retains position data across 15+ years of vehicle life; ROP option byte prevents unauthorized firmware or memory access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive 8-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AF6226P3 | Same core and peripherals but in LQFP32/VFQFPN32 packages; adds CAN 2.0B controller and extra 2 Kbyte Flash. | Required where CAN bus integration is mandatory (e.g., gateway modules), not just LIN-only nodes. | Select when CAN communication is needed alongside LIN; otherwise STM8AF6223PAU offers lower cost and smaller footprint. |
| RL78/F13-BS | Renesas RL78 core; 24 MHz max, 16 Kbyte Flash, 2 Kbyte RAM; supports LIN and CAN but lacks dedicated high-sink I/O. | Better suited for mixed-signal applications requiring higher RAM or faster ADC sampling, but less optimal for direct solenoid/LED drive. | Choose for designs needing >1 Kbyte RAM or 1 Msps ADC; STM8AF6223PAU remains superior for high-current I/O and LIN-focused cost targets. |
Compared with STM8AF6226P3, the STM8AF6223PAU trades CAN capability for lower BOM cost and smaller LQFP32 footprint; versus RL78/F13-BS, it delivers higher I/O sink strength and tighter automotive temperature compliance at reduced code density overhead.
Availability
STM8AF6223PAU is available at Aetrix Electronics and suitable for engine control units, body control modules, and HVAC subsystems requiring stable component supply across extended automotive product lifecycles.
Supply support for STM8AF6223PAU 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 components since 1987.
The STM8AF series is engineered specifically for automotive body, powertrain, and chassis applications demanding AEC-Q100 Grade 0 reliability, extended temperature operation, and integrated LIN connectivity without external transceivers.
FAQ
What is the maximum junction temperature rating for STM8AF6223PAU?
The device is qualified for operation up to 150 °C ambient temperature per AEC-Q100 Grade 0, with a maximum junction temperature of 175 °C under specified thermal conditions. Thermal resistance θJA is 45 °C/W for LQFP32 package, requiring minimum 2 cm² copper pour and 4 thermal vias for sustained 150 °C ambient operation.
Does STM8AF6223PAU support in-circuit debugging without additional hardware?
Yes - it features a Single-Wire Interface Module (SWIM) accessible via PC7 pin, enabling full-speed debugging, flash programming, and real-time register inspection using ST-LINK/V2 or compatible debug probes. No JTAG header or external debug adapter is required.
How many LIN nodes can be addressed simultaneously using STM8AF6223PAU?
The integrated LINUART supports standard LIN 2.2 addressing with 64 unique node IDs (0x00–0x3F). Each device operates as a single slave node; multi-node networks require one STM8AF6223PAU per physical node, with master arbitration handled externally or by a separate master MCU.
Is the 640-byte data EEPROM accessible during program execution?
Yes - the true data EEPROM supports concurrent read/erase/write operations with no CPU stall. Erase/write cycles take 4.5 ms per byte (typical), and the memory is protected by option bytes ROP and WP to prevent accidental overwrite during field updates.
STM8AF6223PAU 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 5x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6223PAU FAQ
1.How can I place an order for STM8AF6223PAU through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6223PAU 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 STM8AF6223PAU reliable?
The price and inventory of STM8AF6223PAU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6223PAU is usually 5 days.
3.What payment methods are accepted for STM8AF6223PAU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6223PAU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6223PAU?
STM8AF6223PAU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6223PAU 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 STM8AF6223PAU?
For technical support, including STM8AF6223PAU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6223PAU requirements.
6.How does Aetrix verify that STM8AF6223PAU is sourced from the original manufacturer or authorized distributors?
All STM8AF6223PAU 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 STM8AF6223PAU meets industry standards.
7.What is the process for return or replacement of STM8AF6223PAU?
All STM8AF6223PAU units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6223PAU, 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 STM8AF6223PAU part is unused and in its original packaging.
Return procedure for STM8AF6223PAU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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