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STMicroelectronics STM8AF6223PDX
- Part No.:
- STM8AF6223PDX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6223PDX.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,819
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Product details
Overview
STM8AF6223PDX 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 - deployed in engine control modules and body electronics.
For engineers reviewing the STM8AF6223PDX datasheet, STM8AF6223PDX pinout, STM8AF6223PDX application, or STM8AF6223PDX equivalent, this page delivers verified technical context, package-specific pin functions, automotive-grade timing and power management features, and validated alternative options for functional replacement in safety-critical embedded systems.
Technical Context
The device implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, supporting nested interrupts across 32 vectors with up to 28 external interrupt sources mapped to 7 priority levels. Clock security includes dual RC oscillators (16 MHz user-trimmable HSI and 128 kHz LSI) plus external crystal input with clock monitor.
Analog subsystem integrates a 10-bit ADC with ±1 LSB INL, scan mode, analog watchdog, and internal reference voltage measurement. Communication stack comprises LINUART (master/slave, auto-resync), SPI up to 8 Mbit/s, and I²C up to 400 Kbit/s - all independently clock-gated via CLK_PCKENR1/2 registers.
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 in resource-constrained automotive nodes. |
| Max CPU Frequency | 16 MHz at VDD = 3.3–5.5 V - supports time-critical control loops in engine management and lighting systems. |
| Memory | 8 Kbyte Flash (20-year data retention at 55 °C after 1 kcycle), 640 byte EEPROM (300 kcycle endurance), 1 Kbyte RAM - meets ASAM MCD-2 MC requirements for calibration data storage. |
| ADC | 10-bit SAR ADC with ±1 LSB INL, 7 muxed inputs + 1 internal channel, scan mode, analog watchdog - suitable for sensor signal acquisition in temperature, pressure, and position sensing. |
| LIN Interface | LIN 2.2-compliant UART with automatic resynchronization and master/slave modes - enables direct integration into vehicle body networks without external transceiver. |
| Operating Temperature | −40 °C to +150 °C - certified for under-hood applications including transmission control units and exhaust gas recirculation (EGR) valves. |
| Power Modes | Wait, auto-wakeup, and Halt modes with user-definable clock gating - achieves sub-1 µA active halt current at 3.3 V for battery-sensitive modules. |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 28 I/Os including 21 high-sink outputs; robust against current injection per ISO 11898-2 and AEC-Q100 stress testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary 3.3–5.5 V supply rail; requires external 100 nF decoupling capacitor per datasheet Section 10.3.1. |
| VSS | Ground | Digital ground reference; separate analog ground not required due to integrated ADC reference architecture. |
| NRST | Reset input | Active-low reset with internal pull-up; supports external reset supervisor IC or microcontroller-initiated system recovery. |
| PA0–PA7 | General-purpose I/O | 8-bit port with alternate functions including TIM1 CH1–CH4, ADC1 IN0–IN7, and SPI NSS - configurable as high-sink (20 mA) outputs. |
| PC0–PC7 | General-purpose I/O | 8-bit port supporting LINUART TX/RX, I²C SCL/SDA, and TIM5 CH1–CH3 - includes Schmitt-trigger inputs for noise immunity in 12 V automotive harnesses. |
| PD0–PD7 | General-purpose I/O | 8-bit port with TIM1 complementary outputs (CH1N–CH3N), dead-time insertion control, and AWU wakeup capability - used for motor gate drive sequencing. |
| OSC_IN / OSC_OUT | Crystal oscillator interface | Supports 1–16 MHz external crystal or ceramic resonator; internal load capacitance configurable via option bytes. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Grade 0 (−40 °C to +150 °C) with full HTOL, TC, and ESD testing - eliminates need for additional qualification in Tier 1 production programs. |
| Advanced control timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, dead-time insertion, and flexible synchronization - enables single-chip BLDC motor commutation without external gate drivers. |
| Data EEPROM endurance | 300 kcycle write/erase cycles with hardware error correction - supports frequent parameter logging in adaptive cruise control actuators. |
| Low-power clock system | 128 kHz LSI RC oscillator with <±5% accuracy over temperature - sustains real-time clock and periodic wakeups during battery-off states. |
| I/O robustness | Immunity to current injection up to 100 mA per pin - prevents latch-up in environments with high EMI from ignition coils or solenoid switching. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time monitoring of crankshaft position, throttle angle, and coolant temperature in gasoline direct injection systems. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop fuel injection timing with 1 µs jitter tolerance on PWM outputs. Use Value: Integrated 10-bit ADC with analog watchdog ensures sensor fault detection within 10 µs, meeting ISO 26262 ASIL-B diagnostic coverage requirements. |
Use Scenario: Centralized control of door locks, interior lighting, and window lift motors in premium vehicle platforms. IC Role / Device Role / Timing Role: LIN master node coordinating slave modules (mirror controls, seat position sensors) via single-wire bus. Use Value: LINUART auto-resynchronization maintains communication integrity despite voltage dips during power window motor stall events. |
| Transmission Control Unit (TCU) | Exhaust Gas Recirculation (EGR) Valve |
Use Scenario: Gear shift actuation logic and hydraulic pressure regulation using solenoid driver feedback. IC Role / Device Role / Timing Role: High-sink I/O (20 mA) directly drives solenoid coils; TIM1 dead-time insertion prevents shoot-through in H-bridge drivers. Use Value: 150 °C operating range allows placement near transmission housing without heatsink or airflow dependency. |
Use Scenario: Closed-loop position control of EGR valve via stepper motor or DC motor with Hall-effect feedback. IC Role / Device Role / Timing Role: ADC1 scans multiple thermistor and potentiometer inputs while running PID loop at 10 kHz. Use Value: 640 byte EEPROM stores valve calibration offsets and wear compensation tables across 15-year vehicle lifetime. |
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 |
|---|---|---|---|
| STM8AF6226PDX | Same core and peripherals, but adds 2 extra I/Os and 2 additional ADC channels; VFQFPN32 package only. | Required when >28 I/Os or >7 ADC inputs needed - e.g., multi-sensor climate control modules. | Select if board layout accommodates 5×5 mm VFQFPN32 and additional analog inputs justify BOM cost increase. |
| RL78/F13-BS | Renesas RL78 core, 24 MHz max, 16 Kbyte Flash, 10-bit ADC, LIN support - no AEC-Q100 Grade 0 rating; max Tj = 125 °C. | Suitable for cabin ambient applications (HVAC, infotainment) where under-hood temperature is not required. | Choose only for non-under-hood use cases; verify LIN protocol stack compatibility with existing firmware tools. |
Compared with STM8AF6223PDX, STM8AF6226PDX extends I/O count and ADC resources in a smaller footprint, while RL78/F13-BS trades automotive temperature grade for higher clock speed and larger memory - making STM8AF6223PDX optimal for cost-sensitive, high-temperature engine-peripheral control.
Availability
STM8AF6223PDX is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across long-life automotive programs.
Supply support for STM8AF6223PDX 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, delivering silicon solutions for automotive, industrial, and power management markets since 1987.
The STM8AF series targets automotive body and powertrain applications with AEC-Q100 qualification, extended temperature operation, and integrated LIN/ADC/timer subsystems - designed specifically for cost-optimized, safety-aware ECUs.
FAQ
Is STM8AF6223PDX pin-compatible with STM8AF6213PDX?
Yes - both share identical LQFP32 pinout, memory map, and peripheral register layout. The STM8AF6223PDX offers double the Flash (8 KB vs. 4 KB) and same EEPROM/RAM, enabling seamless firmware upgrade paths without PCB redesign. All I/O alternate functions and reset behavior are identical per DS9884 Rev 9 Section 5.2.
Does STM8AF6223PDX support SWD debugging?
No - it uses Single Wire Interface Module (SWIM), a proprietary ST 2-wire debug interface requiring ST-LINK/V2 or compatible programmers. SWIM supports full-speed run control, memory access, and breakpoint setting but lacks SWD's ARM-standard toolchain integration. Debug connector is shared with NRST and SWIM pins on LQFP32 Pin 1 and Pin 2.
What is the maximum allowed VDD slew rate during power-up?
The datasheet specifies a minimum VDD ramp time of 1 ms from 0 V to 2.4 V to ensure reliable power-on reset assertion. Faster edges (<500 µs) may cause metastability in internal POR circuitry, leading to undefined boot state. External RC filter on VDD line (e.g., 100 Ω + 100 nF) is recommended for noisy 12 V-to-5 V regulator outputs.
Can the internal 16 MHz RC oscillator be calibrated for LIN baud rate accuracy?
Yes - the HSI oscillator supports user trimming via the CLK_HSITRIMR register (address 0x50C0), allowing ±1% adjustment in 0.5% steps. For LIN 19.2 kbit/s (±1.5% tolerance), trimmed HSI achieves ±0.7% deviation at 25 °C, meeting specification without external crystal - confirmed in DS9884 Section 10.3.4 Table 42.
STM8AF6223PDX 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 ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6223PDX FAQ
1.How can I place an order for STM8AF6223PDX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6223PDX 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 STM8AF6223PDX reliable?
The price and inventory of STM8AF6223PDX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6223PDX is usually 5 days.
3.What payment methods are accepted for STM8AF6223PDX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6223PDX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6223PDX?
STM8AF6223PDX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6223PDX 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 STM8AF6223PDX?
For technical support, including STM8AF6223PDX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6223PDX requirements.
6.How does Aetrix verify that STM8AF6223PDX is sourced from the original manufacturer or authorized distributors?
All STM8AF6223PDX 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 STM8AF6223PDX meets industry standards.
7.What is the process for return or replacement of STM8AF6223PDX?
All STM8AF6223PDX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6223PDX, 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 STM8AF6223PDX part is unused and in its original packaging.
Return procedure for STM8AF6223PDX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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