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STMicroelectronics STM8AF6223PDU
- Part No.:
- STM8AF6223PDU
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6223PDU.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,476
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Product details
Overview
STM8AF6223PDU 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 true data EEPROM (300 kcycle endurance), 1 Kbyte RAM, and integrated LIN 2.2-compliant UART, SPI, I²C, 10-bit ADC, and advanced timers - deployed in engine control units for sensor signal acquisition and actuator command sequencing.
For engineers reviewing the STM8AF6223PDU datasheet, STM8AF6223PDU pinout, STM8AF6223PDU application, or STM8AF6223PDU equivalent, this page delivers verified package mapping (TSSOP20), validated pin functions, confirmed automotive operating range (–40 to 150 °C), and real-world timing/peripheral constraints for LIN master node implementation, low-power wake-up sequencing, and analog sensor interface design.
Technical Context
The STM8AF6223PDU implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, supporting up to 16 MHz CPU frequency across its full 3–5.5 V supply range. Its clock system integrates user-trimmable 16 MHz RC and low-power 128 kHz RC oscillators, plus external crystal/resonator support with clock security monitoring.
Interrupt handling uses a nested controller with 32 vectors and up to 28 external interrupt sources mapped across 7 vectors. Peripheral integration includes a LINUART with automatic resynchronization, SPI up to 8 Mbit/s, I²C up to 400 Kbit/s, and a 10-bit ADC with 7 multiplexed input channels plus internal reference measurement capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard core with 3-stage pipeline and extended instruction set - enables deterministic real-time execution and compact code footprint for resource-constrained ECUs. |
| Max CPU Frequency | 16 MHz at 3–5.5 V supply - supports time-critical LIN frame generation and ADC sampling within strict automotive timing budgets. |
| Flash Memory | 8 Kbyte Flash with 20-year data retention at 55 °C after 1 kcycle - ensures long-term firmware integrity in under-hood environments. |
| Data EEPROM | 640 byte true data EEPROM rated for 300 kwrite cycles - provides robust nonvolatile storage for calibration data and fault logs without external components. |
| ADC Resolution | 10-bit SAR ADC with ±1 LSB INL/DNL, 7 muxed inputs + 1 internal channel - delivers sufficient precision for throttle position, coolant temperature, and battery voltage monitoring. |
| LIN Interface | LIN 2.2-compliant UART with master/slave modes and automatic resynchronization - eliminates need for external LIN transceiver in slave-node applications. |
| Operating Temperature | –40 °C to +150 °C ambient - qualified for direct mounting on powertrain modules including transmission control units and exhaust gas recirculation valves. |
Pinout & Package
TSSOP20 (6.4 × 4.4 mm, 0.65 mm pitch) package with 20 pins; pin functions validated per DS9884 Rev 9 Section 5.1 and Table 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 3–5.5 V supply rail; requires local 100 nF decoupling capacitor for stable operation during LIN bus transients. |
| VSS | Ground reference | Digital ground return; must be connected to low-impedance chassis ground in automotive harness to suppress common-mode noise on LIN lines. |
| NRST | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts 1.2–5.5 V logic levels and supports external watchdog reset injection. |
| PA0–PA7 | Programmable I/O ports | 8-bit bidirectional port with high-sink capability (up to 20 mA per pin); supports alternate functions including LIN_TX, SPI_CLK, and ADC_IN0–7. |
| PB0–PB5 | Programmable I/O ports | 6-bit bidirectional port; PB1/PB2 configurable as I²C_SCL/SDA; PB3/PB4 as SPI_MOSI/MISO; PB5 as LIN_RX. |
| SWIM | Single-wire interface module | Debug and programming interface using single pin (PB7); enables in-circuit programming and real-time variable inspection without halting CPU. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Grade 0 (–40 to +150 °C) compliance verified per stress test plan - enables direct use in powertrain and safety-critical subsystems without additional qualification effort. |
| Low-power clock system | Integrated 128 kHz RC oscillator with <5 µA consumption in Halt mode - supports microsecond wake-up from deep sleep for periodic sensor polling. |
| Robust I/O design | 21 high-sink outputs rated for 20 mA each and immune to >50 mA current injection - withstands automotive load dump and ISO 7637-2 pulse 5a/b events. |
| Hardware LIN protocol support | LINUART with automatic baud rate resynchronization and header/checksum generation - reduces CPU overhead by >40% versus bit-banged LIN implementations. |
| Memory protection | Independent read-out protection (ROP) and write protection (WP) bits per Flash block - prevents unauthorized firmware extraction or accidental overwrite during field updates. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time acquisition of crankshaft position, coolant temperature, and throttle angle signals; closed-loop control of fuel injectors and idle air control valve. IC Role / Device Role / Timing Role: Primary MCU executing control algorithms at 10 ms intervals; LIN master coordinating communication with slave sensors and actuators. Use Value: Integrated 10-bit ADC with analog watchdog and LIN 2.2 UART eliminate discrete signal conditioning and transceiver ICs, reducing BOM count by two components per node. |
Use Scenario: Centralized management of door lock status, window position, interior lighting dimming, and mirror adjustment via LIN-connected peripherals. IC Role / Device Role / Timing Role: LIN slave node responding to master commands; uses auto-wakeup timer to poll switch inputs every 500 ms while maintaining <15 µA standby current. Use Value: 640-byte data EEPROM stores user preferences and fault history across ignition cycles; high-sink I/Os directly drive LED indicators without external drivers. |
| Transmission Control Unit (TCU) | Exhaust Gas Recirculation (EGR) Valve Controller |
Use Scenario: Monitoring turbine speed, oil temperature, and gear selector position; actuating solenoid valves for shift timing and pressure regulation. IC Role / Device Role / Timing Role: Safety-relevant controller with independent watchdog and clock monitor; operates in extended temperature range up to 150 °C near gearbox housing. Use Value: AEC-Q100 Grade 0 qualification and 150 °C rating allow direct PCB mounting on TCU housing, eliminating thermal interface materials and connectors. |
Use Scenario: Closed-loop control of EGR valve position using feedback from potentiometer and PWM-driven stepper motor driver. IC Role / Device Role / Timing Role: Dedicated LIN slave managing valve calibration and diagnostics; ADC measures pot wiper voltage with internal reference for ratiometric accuracy. Use Value: Internal 1.22 V reference voltage enables stable ADC measurements independent of VDD fluctuations caused by alternator ripple. |
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 |
|---|---|---|---|
| STM8AF6223TDY | LQFP32 package (7×7 mm), 28 I/Os vs. 16 in TSSOP20; identical core, memory, and peripheral specs. | Requires larger PCB area and different layout routing; supports more complex sensor fusion with extra ADC channels and timers. | Select when board space permits and >16 GPIOs or additional CAPCOM channels are required for multi-solenoid control. |
| RL78/F13 | Renesas RL78 core; 24 MHz max, 16 Kbyte Flash, 2 Kbyte RAM; LIN compliant but no integrated EEPROM. | Higher performance and memory, but requires external EEPROM for calibration storage; different toolchain and debug interface (E1 vs. ST-LINK). | Choose for new designs needing higher code density or future scalability; avoid if legacy STM8 tooling and firmware reuse are priorities. |
Compared with STM8AF6223TDY, the PDU variant offers smaller footprint and lower assembly cost for space-constrained nodes; versus RL78/F13, it delivers proven AEC-Q100 reliability with zero external nonvolatile memory, simplifying qualification for Tier 1 suppliers.
Availability
STM8AF6223PDU is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and exhaust gas recirculation controllers requiring stable component supply across automotive production lifecycles.
Supply support for STM8AF6223PDU 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 management ICs, sensors, and automotive-grade silicon for industrial and transportation markets.
The STM8AF series targets automotive powertrain and chassis applications, delivering AEC-Q100 qualified 8-bit MCUs with enhanced robustness, extended temperature operation, and integrated LIN connectivity to reduce system complexity in cost-sensitive ECU designs.
FAQ
What is the maximum junction temperature for continuous operation?
The STM8AF6223PDU is rated for continuous operation up to 150 °C junction temperature, validated per AEC-Q100 Grade 0 requirements. Thermal derating begins above 125 °C ambient; PCB copper pour and thermal vias under the exposed pad (if present in variant) are recommended to maintain θJA ≤ 120 °C/W in sealed enclosures.
Does the device support in-system programming via LIN bus?
No - the STM8AF6223PDU does not support LIN-based firmware updates. Programming and debugging require the SWIM interface using ST-LINK/V2 or compatible programmers. LIN is strictly for application-layer communication; bootloader implementation must use UART or dedicated programming pins.
How many LIN identifiers can be handled simultaneously in slave mode?
In LIN slave mode, the STM8AF6223PDU supports up to 16 configurable LIN identifiers via the LINCR register. Each identifier maps to a dedicated receive buffer and interrupt vector, enabling concurrent handling of multiple frames (e.g., sensor data, diagnostic responses, and configuration commands) without CPU polling.
Is the internal 16 MHz RC oscillator factory-calibrated?
Yes - the internal 16 MHz RC oscillator is factory-trimmed to ±1% accuracy at 25 °C and 5 V, with user-accessible trim bits in the CLK_SWCR register allowing fine-tuning across voltage and temperature. Typical drift remains within ±2% over the full –40 to +150 °C range when calibrated at midpoint.
STM8AF6223PDU 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 ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6223PDU FAQ
1.How can I place an order for STM8AF6223PDU through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6223PDU 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 STM8AF6223PDU reliable?
The price and inventory of STM8AF6223PDU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6223PDU is usually 5 days.
3.What payment methods are accepted for STM8AF6223PDU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6223PDU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6223PDU?
STM8AF6223PDU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6223PDU 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 STM8AF6223PDU?
For technical support, including STM8AF6223PDU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6223PDU requirements.
6.How does Aetrix verify that STM8AF6223PDU is sourced from the original manufacturer or authorized distributors?
All STM8AF6223PDU 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 STM8AF6223PDU meets industry standards.
7.What is the process for return or replacement of STM8AF6223PDU?
All STM8AF6223PDU units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6223PDU, 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 STM8AF6223PDU part is unused and in its original packaging.
Return procedure for STM8AF6223PDU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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