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STMicroelectronics STM8AF6223PAX
- Part No.:
- STM8AF6223PAX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6223PAX.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
STM8AF6223PAX from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit microcontroller featuring a 16 MHz STM8A core, 8 Kbyte Flash memory, 640 byte data EEPROM, 10-bit ADC with 7 muxed channels, LIN 2.2-compliant UART, and operation up to 150 °C in LQFP32 package. It targets body control modules requiring robust LIN communication and high-temperature reliability.
For engineers reviewing the STM8AF6223PAX datasheet, STM8AF6223PAX pinout, STM8AF6223PAX application, or STM8AF6223PAX equivalent, key selection criteria include AEC-Q100 qualification, 150 °C operating temperature, LIN 2.2 master/slave support with auto-resynchronization, 16-bit advanced control timer with dead-time insertion, and high-sink I/O capability (21 pins).
Technical Context
The STM8AF6223PAX implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, enabling deterministic real-time execution at up to 16 MHz. Its clock system integrates trimmable 16 MHz RC and 128 kHz low-power oscillators plus external crystal support with clock security monitoring.
Peripheral integration includes a LINUART compliant with LIN 2.2 specification (including automatic resynchronization), SPI up to 8 Mbit/s, I²C up to 400 Kbit/s, and a 10-bit ADC with analog watchdog and internal reference measurement - all designed for fault-tolerant automotive subsystems.
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 response in LIN bus arbitration and sensor polling loops. |
| Memory | 8 Kbyte Flash (20-year data retention at 55 °C after 1 kcycle) + 640 byte EEPROM (300 kcycle endurance) for firmware and calibration storage. |
| ADC | 10-bit ±1 LSB ADC with 7 external + 1 internal channel, scan mode, and analog watchdog for battery voltage and temperature monitoring. |
| LIN Interface | LINUART compliant with LIN 2.2 standard, supporting master/slave modes with hardware auto-resynchronization for robust subnetwork timing recovery. |
| Operating Temperature | −40 °C to +150 °C ambient; qualified per AEC-Q100 Grade 0 for under-hood automotive applications. |
| I/O Capability | Up to 28 I/Os in LQFP32 package, including 21 high-sink outputs (20 mA typical) for direct LED/relay drive without external buffers. |
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. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/O ports | Configurable as push-pull, open-drain, or high-sink outputs; 21 pins support 20 mA sink for direct actuator control. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset supervisor ICs and brown-out detection. |
| SWIM | Single-wire interface module | 2-pin debug interface (SWIM + VSS) enabling in-circuit programming and real-time debugging without dedicated JTAG pins. |
| LIN_TX / LIN_RX | LIN bus transceiver interface | Dedicated LINUART pins with internal level-shifting; compatible with standard LIN transceivers (e.g., TLE7259-3GE) |
| CLK_IN / CLK_OUT | External clock oscillator interface | Supports low-power crystal (32.768 kHz) or external clock source up to 16 MHz; used for precise timing or EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +150 °C operation with full electrical characterization across temperature and voltage extremes. |
| Advanced control timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion for BLDC motor gate driving. |
| Low-power modes | Wait, auto-wakeup, and Halt modes with configurable clock gating reduce active current to 230 µA (typ) at 3.3 V in wait mode. |
| Robust I/O design | Immune to current injection per ISO 10605; supports 5 V tolerant inputs on selected pins for mixed-voltage system interfacing. |
| Internal voltage reference | Bandgap-based VREFINT enables accurate ADC self-calibration and battery monitoring without external components. |
Applications
| Body Control Module (BCM) | Roof Module |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave node firmware, managing I/O state machines, and coordinating multi-node diagnostics via LIN cluster. Use Value: High-sink I/Os directly drive solenoids and LEDs; LIN 2.2 auto-resync maintains communication integrity during engine cranking voltage dips. | Use Scenario: Integrated sunroof, panoramic roof, and ambient lighting control with position sensing and anti-pinch safety logic. IC Role / Device Role / Timing Role: Real-time motor control using TIM1's dead-time insertion and ADC sampling for potentiometer feedback and current sensing. Use Value: 150 °C rating ensures reliable operation near HVAC ducts; 640-byte EEPROM stores calibrated end-stop positions and user preferences. |
| Seat Control Unit | Lighting Control Module |
Use Scenario: Motorized seat adjustment (fore/aft, recline, lumbar) with position feedback and overload protection. IC Role / Device Role / Timing Role: PWM generation via TIM5 for DC motor speed control; ADC monitoring of motor current and seat switch states. Use Value: 10-bit ADC with analog watchdog detects open-circuit sensors or shorted motor windings; 300 kcycle EEPROM endurance supports lifetime recalibration. | Use Scenario: Adaptive front-lighting system (AFS) and dynamic rear lighting with LIN synchronization and thermal derating. IC Role / Device Role / Timing Role: LIN master node orchestrating LED brightness, color, and animation timing across multiple slave nodes. Use Value: 16 MHz CPU handles real-time PWM updates for flicker-free dimming; internal 128 kHz RC oscillator enables ultra-low-power wake-on-LIN event. |
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 |
|---|---|---|---|
| STM8AF6226PAX | Same core and peripherals but adds CAN 2.0B controller; 32-pin LQFP/VFQFPN footprint; no TSSOP20 option. | Required where CAN bus integration is needed for gateway or diagnostic functions alongside LIN. | Select when dual-bus (LIN + CAN) communication is mandatory; pin-compatible in LQFP32 but requires CAN transceiver. |
| RL78/F13-BCU | Renesas RL78 core (16-bit), 32 Kbyte Flash, 2.7–5.5 V, −40 °C to +125 °C; LIN 2.2 compliant but no 150 °C rating. | Suitable for cabin modules where extended temperature range is not required and higher code density is beneficial. | Choose for cost-sensitive cabin applications with less extreme thermal demands; software ecosystem differs significantly. |
Compared with STM8AF6223PAX, STM8AF6226PAX adds CAN but shares identical LIN, ADC, and timer capabilities, while RL78/F13-BCU offers larger memory and 16-bit performance at the expense of AEC-Q100 Grade 0 temperature compliance.
Availability
STM8AF6223PAX is available at Aetrix Electronics and suitable for body control modules, roof modules, seat control units, and lighting control modules requiring stable component supply across automotive production lifecycles.
Supply support for STM8AF6223PAX 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 STM8AF automotive microcontroller product line delivers AEC-Q100 qualified 8-bit MCUs optimized for cost-sensitive, high-reliability body electronics applications with LIN connectivity and extended temperature operation.
FAQ
What is the maximum junction temperature rating for STM8AF6223PAX?
The STM8AF6223PAX 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 the DS9884 datasheet, with thermal resistance θJA = 40 °C/W for LQFP32 package.
Does STM8AF6223PAX support in-system programming via SWIM?
Yes, STM8AF6223PAX supports single-wire in-circuit programming and debugging via the SWIM interface using only two pins (SWIM and VSS). The interface operates at VDD levels from 2.95 V to 5.5 V and enables full flash/EPPROM read/write, breakpoint setting, and register inspection without halting real-time operation.
How many LIN nodes can STM8AF6223PAX manage as a master?
As a LIN master, STM8AF6223PAX supports one physical LIN bus segment with up to 16 slave nodes. The LINUART peripheral handles frame scheduling, checksum calculation, identifier filtering, and automatic resynchronization - all in hardware - allowing deterministic timing without CPU overhead.
Is the 640-byte data EEPROM accessible during program execution?
Yes, the 640-byte true data EEPROM supports concurrent read-while-write operation: the CPU can execute code from Flash while EEPROM pages are being erased or programmed. Access is managed via dedicated EEPROM control registers (FLASH_IAPSR, FLASH_PUKR, FLASH_DUKR), and write cycles require unlock sequences to prevent accidental modification.
STM8AF6223PAX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- STM8A
- Packaging:
- Tape & Reel (TR)
- 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:
STM8AF6223PAX FAQ
1.How can I place an order for STM8AF6223PAX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6223PAX 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 STM8AF6223PAX reliable?
The price and inventory of STM8AF6223PAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6223PAX is usually 5 days.
3.What payment methods are accepted for STM8AF6223PAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6223PAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6223PAX?
STM8AF6223PAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6223PAX 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 STM8AF6223PAX?
For technical support, including STM8AF6223PAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6223PAX requirements.
6.How does Aetrix verify that STM8AF6223PAX is sourced from the original manufacturer or authorized distributors?
All STM8AF6223PAX 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 STM8AF6223PAX meets industry standards.
7.What is the process for return or replacement of STM8AF6223PAX?
All STM8AF6223PAX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6223PAX, 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 STM8AF6223PAX part is unused and in its original packaging.
Return procedure for STM8AF6223PAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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