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STMicroelectronics STM8AF6223PDAU
- Part No.:
- STM8AF6223PDAU
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6223PDAU.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,230
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Product details
Overview
STM8AF6223PDAU 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 STM8AF6223PDAU datasheet, STM8AF6223PDAU pinout, STM8AF6223PDAU application, or STM8AF6223PDAU equivalent, key selection criteria include automotive-grade temperature range (−40 to 150 °C), LIN master/slave capability with automatic resynchronization, 28 I/Os with high-sink capability, and integrated clock security system with monitor.
Technical Context
The STM8AF6223PDAU implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, supporting up to 16 MHz CPU frequency at 3–5.5 V supply. 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 interrupts across 7 vectors. Peripheral integration includes an advanced 16-bit timer (TIM1) with dead-time insertion and complementary outputs, two additional 16-bit and 8-bit general-purpose timers, and analog subsystem with internal reference voltage measurement.
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. |
| Max CPU Frequency | 16 MHz at 3–5.5 V - supports fast response in LIN bus arbitration and sensor sampling loops. |
| Flash Memory | 8 Kbyte with 20-year data retention at 55 °C after 1 kcycle - ensures long-term firmware integrity in automotive ECUs. |
| Data EEPROM | 640 byte true EEPROM with 300 kcycle endurance - suitable for wear-intensive calibration storage and fault log retention. |
| ADC Resolution | 10-bit ±1 LSB with scan mode and analog watchdog - delivers precise battery voltage, temperature, and potentiometer readings. |
| LIN Interface | LINUART compliant with LIN 2.2, master/slave modes and automatic resynchronization - eliminates need for external LIN transceiver in basic node designs. |
| Operating Temperature | −40 to +150 °C - certified for under-hood applications including engine bay and transmission control units. |
| I/O Count | 28 I/Os in LQFP32 package, including 21 high-sink outputs - drives LEDs, relays, and discrete loads directly without external drivers. |
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 junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 3–5.5 V supply rail; requires local 100 nF decoupling per VDD pin for noise immunity in automotive environments. |
| VSS | Ground reference | Digital ground return; multiple VSS pins ensure low-impedance path for high-frequency switching currents. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2 V logic threshold and supports external reset supervisor ICs. |
| PA0–PA7 | Programmable GPIO / alternate functions | Support LINUART TX/RX, SPI SCK/MOSI/MISO, I²C SCL/SDA, ADC inputs, and timer capture/compare - enables flexible peripheral mapping. |
| PB0–PB7 | Programmable GPIO / alternate functions | Include TIM1 complementary outputs (CH1/CH2/CH3), high-sink capability (20 mA sink), and interrupt-capable inputs for wake-up events. |
| PC0–PC7 | Programmable GPIO / alternate functions | Provide ADC channel inputs (CH0–CH6), internal reference voltage measurement (VREFINT), and SWIM debug interface (SWIM). |
| PD0–PD7 | Programmable GPIO / alternate functions | Support auto-wakeup timer input, independent/watchdog timer reset, and clock security system monitor output (CSSO). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 to +150 °C operation with full automotive stress testing - meets OEM requirements for powertrain and chassis modules. |
| Integrated LIN 2.2 UART | Hardware LIN protocol stack with automatic resynchronization and checksum generation - reduces CPU load and eliminates external LIN transceiver in slave nodes. |
| High-sink I/O capability | 21 pins rated for 20 mA sink current - directly drives automotive LEDs, solenoids, and small relays without external driver stages. |
| Robust clock security system | Dedicated clock monitor with fail-safe reset and CSSO output signal - detects oscillator failure and triggers safe state entry within 4 µs. |
| Low-power modes with wake-up | Wait, auto-wakeup, and Halt modes with configurable clock gating; wake-up from all modes via external interrupt or auto-wakeup timer - extends battery life in always-on systems. |
| True data EEPROM | 640 byte on-chip EEPROM with 300 kcycle endurance and 20-year data retention - replaces external serial EEPROM in cost-sensitive body electronics. |
Applications
| Body Control Module (BCM) | Door Module |
|---|---|
Use Scenario: Centralized control of lighting, window lift, mirror adjustment, and door lock actuation in modern vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave communication with gateway ECU, managing PWM dimming for interior LEDs, and sampling hall-effect sensors for position feedback. Use Value: High-sink I/Os drive LED strings directly; LINUART handles multi-node diagnostics; 150 °C rating supports placement near door latch motors. |
Use Scenario: Local intelligence in vehicle doors for anti-pinch detection, express up/down control, and proximity-based unlock activation. IC Role / Device Role / Timing Role: Real-time motor control via TIM1 complementary outputs with dead-time insertion; ADC monitors current sense resistors and thermistors. Use Value: Integrated 10-bit ADC with analog watchdog enables fast overcurrent detection; 640-byte EEPROM stores calibration offsets for motor profiles. |
| Roof Module | Seat Control Unit |
Use Scenario: Sunroof and panoramic roof actuation with obstacle detection, tilt control, and rain sensor integration. IC Role / Device Role / Timing Role: LIN slave node communicating status and commands to BCM; uses auto-wakeup timer for periodic self-test during sleep. Use Value: Low-power Halt mode draws <1 µA; 128 kHz RC oscillator enables wake-up timing without external crystal - reduces BOM count. |
Use Scenario: Motorized seat position memory, lumbar support, and heating element control with thermal protection. IC Role / Device Role / Timing Role: Dual-timer coordination (TIM1 + TIM5) for synchronized dual-motor movement; ADC measures seat track potentiometers and heater NTCs. Use Value: 8 Kbyte Flash accommodates seat position algorithms and LIN diagnostic services; 16 MHz CPU ensures sub-10 ms response to switch inputs. |
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 |
|---|---|---|---|
| STM8AF6226PDU | Same core and peripherals, but offered in VFQFPN32 (5×5 mm) and LQFP32 packages; adds one extra ADC channel (8 total) and increases RAM to 1.5 Kbyte. | Preferred for space-constrained modules where smaller VFQFPN32 footprint is required; higher RAM supports more complex LIN diagnostic stacks. | Select when board area is critical or additional ADC channel is needed; pin-compatible in LQFP32 but not VFQFPN32 due to different thermal pad layout. |
| RL78/F13-CD-TE | Renesas RL78 core (16-bit), 32 Kbyte Flash, 4 Kbyte RAM, LIN 2.2, but no integrated high-sink I/Os; operates to 125 °C only. | Better suited for gateway or mid-tier modules needing higher code density and CAN/LIN coexistence; requires external drivers for high-current loads. | Choose when migrating toward 16-bit architecture or integrating CAN alongside LIN; verify thermal derating if deployed above 125 °C. |
Compared with STM8AF6226PDU, the STM8AF6223PDAU offers identical functionality in LQFP32 but with lower memory and ADC count - ideal for cost-optimized body nodes. Against RL78/F13-CD-TE, it provides superior high-temperature operation and direct load driving, at the expense of code density and CAN readiness.
Availability
STM8AF6223PDAU is available at Aetrix Electronics and suitable for body control modules, door modules, roof modules, and seat control units requiring stable component supply across automotive production lifecycles.
Supply support for STM8AF6223PDAU 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 MCU product line targets cost-sensitive, high-reliability body electronics applications, emphasizing AEC-Q100 compliance, LIN integration, and extended temperature operation without sacrificing code efficiency or toolchain maturity.
FAQ
Is STM8AF6223PDAU pin-compatible with other STM8AF62xx variants in LQFP32?
Yes - STM8AF6223PDAU shares identical LQFP32 pinout with STM8AF6226 in the same package variant, including matching VDD/VSS, NRST, SWIM, and peripheral alternate function mappings. Differences are internal (Flash size, ADC channels, RAM), not pin-level. Always verify option byte configuration for clock source selection and reset behavior.
What LIN physical layer components are required when using STM8AF6223PDAU?
No external LIN transceiver is required for basic slave-node operation: the integrated LINUART handles protocol framing, checksum, and synchronization. However, a LIN bus physical layer (e.g., TLE7259-2GE or MC33661) is mandatory to drive the 12 V bus, provide ESD protection, and meet ISO 17987-4 electrical specifications for slew rate and dominant timeout.
Does STM8AF6223PDAU support in-circuit debugging via SWIM?
Yes - the device features a Single Wire Interface Module (SWIM) accessible via dedicated SWIM pin (PC7) and NRST pin, enabling full-speed debugging, flash programming, and real-time variable inspection using ST-LINK/V2 or compatible debuggers. SWIM operates at VDD = 3–5.5 V and supports hot-plug connection without resetting the target.
How is the 150 °C operating temperature validated for STM8AF6223PDAU?
The 150 °C rating is validated per AEC-Q100 Grade 0 test plan, including extended temperature life testing (ETL), high-temperature operating life (HTOL), and thermal cycling (TC). Junction temperature is monitored during qualification; actual PCB layout must maintain θJA ≤ 45 °C/W (LQFP32, 4-layer board, 1-in² copper pour) to sustain continuous 150 °C ambient operation.
STM8AF6223PDAU 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 ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6223PDAU FAQ
1.How can I place an order for STM8AF6223PDAU through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6223PDAU 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 STM8AF6223PDAU reliable?
The price and inventory of STM8AF6223PDAU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6223PDAU is usually 5 days.
3.What payment methods are accepted for STM8AF6223PDAU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6223PDAU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6223PDAU?
STM8AF6223PDAU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6223PDAU 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 STM8AF6223PDAU?
For technical support, including STM8AF6223PDAU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6223PDAU requirements.
6.How does Aetrix verify that STM8AF6223PDAU is sourced from the original manufacturer or authorized distributors?
All STM8AF6223PDAU 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 STM8AF6223PDAU meets industry standards.
7.What is the process for return or replacement of STM8AF6223PDAU?
All STM8AF6223PDAU units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6223PDAU, 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 STM8AF6223PDAU part is unused and in its original packaging.
Return procedure for STM8AF6223PDAU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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