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STMicroelectronics STM8AF6223PCU
- Part No.:
- STM8AF6223PCU
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6223PCU.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,480
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Product details
Overview
STM8AF6223PCU 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, SPI, I²C, and advanced timers-including a 16-bit advanced control timer with dead-time insertion-targeting body control modules and powertrain sensors in 150 °C environments.
For engineers reviewing the STM8AF6223PCU datasheet, STM8AF6223PCU pinout, STM8AF6223PCU application, or STM8AF6223PCU equivalent, key selection criteria include automotive-grade temperature range (–40 to 150 °C), LIN physical layer compliance, high-sink I/O capability (21 pins), integrated clock security system, and dual RC oscillator trimming for ECU timing stability.
Technical Context
The STM8AF6223PCU 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 management includes user-trimmable 16 MHz HSI and 128 kHz LSI oscillators, plus external crystal support and clock monitor for fail-safe detection.
Interrupt handling uses a nested controller supporting 32 vectors and up to 28 external interrupts across 7 priority levels. Peripheral integration centers on functional redundancy: TIM1 (advanced control) and TIM5 (general-purpose) both support PWM generation, while ADC1 provides scan mode and analog watchdog for sensor signal integrity monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard core with 3-stage pipeline; enables deterministic interrupt latency and code density advantage over legacy 8051 derivatives. |
| Max CPU Frequency | 16 MHz at VDD = 3.3–5.5 V; supports real-time control loops with sub-62.5 ns instruction cycle time. |
| Flash Memory | 8 Kbyte program Flash with 20-year data retention at 55 °C after 1 kcycle; meets automotive firmware update durability requirements. |
| Data EEPROM | 640 byte true data EEPROM rated for 300 kwrite cycles; eliminates need for external nonvolatile storage in calibration/data logging applications. |
| ADC Resolution | 10-bit SAR ADC with ±1 LSB INL/DNL, 7 muxed input channels + 1 internal reference channel; supports precision sensor interfacing without external signal conditioning. |
| LIN Interface | LINUART compliant with LIN 2.2 specification, supporting master/slave modes with automatic resynchronization; enables direct connection to LIN cluster nodes without transceiver translation. |
| Operating Temperature | –40 to 150 °C ambient; validated for under-hood engine control units and transmission control modules per AEC-Q100 Grade 0. |
| I/O Sink Capability | 21 high-sink outputs rated for 20 mA per pin; drives LEDs, relays, and solenoids directly without external drivers in body electronics. |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad; RoHS-compliant, automotive-qualified lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD pins (Pins 1, 32) and four VSS pins (Pins 2, 16, 17, 31) ensure low-impedance power delivery and noise immunity in noisy automotive environments. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external watchdog reset injection and brown-out detection coordination. |
| PA0–PA7 | Port A general-purpose I/O | 8-bit bidirectional port with alternate functions including TIM1/2 channels, ADC inputs, and SPI/I²C signals; configurable pull-up/pull-down. |
| PB0–PB7 | Port B general-purpose I/O | 8-bit port supporting LINUART TX/RX, SPI SCK/MOSI/MISO, and TIM5 channels; includes high-sink capability on PB0–PB6. |
| PC0–PC7 | Port C general-purpose I/O | 8-bit port with TIM1 complementary outputs (PC0–PC2), ADC inputs (PC3–PC6), and SWIM debug interface (PC7). |
| PD0–PD7 | Port D general-purpose I/O | 8-bit port providing additional TIM5 channels, I²C SCL/SDA, and auto-wakeup timer input; supports remappable alternate functions. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for operation from –40 to 150 °C ambient; meets automotive reliability and lifetime requirements for powertrain ECUs. |
| Advanced control timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion; enables precise 3-phase motor gate drive without external logic. |
| Integrated clock security system | Dedicated clock monitor circuit that triggers reset if main oscillator fails or deviates >20%; eliminates need for external watchdog IC in safety-critical paths. |
| True data EEPROM | 640-byte embedded EEPROM with 300 kcycle endurance and 20-year data retention; stores calibration coefficients and fault logs without external serial EEPROM. |
| LIN 2.2-compliant UART | Hardware LIN protocol stack with automatic sync-break detection, checksum calculation, and resynchronization; reduces CPU overhead in LIN slave node implementations. |
| High-sink I/O capability | 21 pins capable of sinking 20 mA each at VDD = 5 V; directly drives automotive loads like indicator LEDs and small solenoids, reducing BOM count. |
Applications
| Body Control Module (BCM) | Engine Coolant Temperature Sensor Interface |
|---|---|
Use Scenario: Centralized control of door locks, lighting, wipers, and HVAC actuators in modern vehicle platforms. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave communication, PWM fan speed control, and analog sensor acquisition. Use Value: Integrated LINUART and 10-bit ADC eliminate external transceivers and signal conditioners, reducing PCB area by 28% versus discrete solutions. |
Use Scenario: Signal conditioning and linearization of NTC thermistor output for real-time coolant temperature reporting to ECU. IC Role / Device Role / Timing Role: Analog front-end processor with ADC scan mode, internal reference measurement, and LIN transmission of calibrated values. Use Value: On-chip 10-bit ADC with ±1 LSB accuracy and internal VREF measurement enables <±1.5 °C total error across –40 to 150 °C without external precision references. |
| Transmission Control Unit (TCU) Solenoid Driver | Automotive Seat Position Memory System |
Use Scenario: Closed-loop current control of hydraulic pressure solenoids in automatic transmission valve bodies. IC Role / Device Role / Timing Role: High-reliability PWM generator using TIM1's dead-time insertion to prevent shoot-through in half-bridge driver stages. Use Value: Hardware dead-time insertion (programmable 1–1023 ns) ensures safe switching of external MOSFETs, eliminating risk of cross-conduction failure. |
Use Scenario: Storing and recalling seat position profiles via nonvolatile memory and driving seat motor actuators via PWM outputs. IC Role / Device Role / Timing Role: Data logger and motor controller combining 640-byte EEPROM for profile storage and TIM5 for smooth position ramping. Use Value: Embedded 300 kcycle EEPROM retains >10,000 seat position writes over 15-year vehicle life, avoiding premature wear-out of external FRAM/NVSRAM. |
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 |
|---|---|---|---|
| STM8AF6226UCY | Same core and peripherals but in VFQFPN32 (5 × 5 mm) package; identical electrical specs and temperature rating. | Preferred for space-constrained modules where LQFP32 footprint is prohibitive; same pinout mapping but different thermal pad layout. | Select when board area is constrained and thermal performance via exposed pad is prioritized over standard LQFP reworkability. |
| RL78/F13-BS | Renesas RL78 core; 24 MHz max, 16 Kbyte Flash, 10-bit ADC, LIN, but no dedicated dead-time insertion or high-sink I/O. | Requires external gate drivers for solenoid control; lacks 150 °C rating-limited to cabin applications up to 105 °C. | Choose only for non-under-hood applications where lower cost offsets loss of high-temp capability and integrated motor control features. |
Compared with STM8AF6226UCY, the STM8AF6223PCU offers identical functionality in a more manufacturable LQFP package; versus RL78/F13-BS, it delivers superior thermal robustness, hardware motor control features, and higher I/O drive strength essential for powertrain integration.
Availability
STM8AF6223PCU is available at Aetrix Electronics and suitable for automotive body control modules, engine sensor interfaces, transmission solenoid drivers, and seat memory systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for STM8AF6223PCU 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 targets cost-sensitive, high-reliability embedded control applications-including engine management, chassis systems, and body electronics-with AEC-Q100 qualification and extended temperature support built into silicon and qualification processes.
FAQ
What is the maximum operating junction temperature for STM8AF6223PCU?
The STM8AF6223PCU is rated for operation up to 150 °C ambient temperature, with a maximum junction temperature of 165 °C under specified thermal conditions (θJA = 45 °C/W, 4-layer PCB). This rating is validated per AEC-Q100 Grade 0 and applies across full voltage range (3.3–5.5 V).
Does STM8AF6223PCU support in-circuit debugging via SWIM interface?
Yes, the STM8AF6223PCU integrates a Single Wire Interface Module (SWIM) on Pin PC7, enabling full-speed in-circuit debugging, flash programming, and real-time variable inspection using ST-LINK/V2 or compatible debug probes without requiring additional pins or JTAG headers.
Can the internal 16 MHz RC oscillator be trimmed for improved accuracy?
Yes, the internal high-speed RC oscillator (HSI) is user-trimmable in 0.5% steps across ±10% range via option bytes, allowing calibration against an external reference to achieve ±1% frequency accuracy over temperature and voltage-critical for LIN baud rate stability.
How many LIN nodes can STM8AF6223PCU manage simultaneously in a single design?
The STM8AF6223PCU supports one LIN 2.2-compliant interface (LINUART) per device. It operates as either master or slave in a single LIN cluster; multiple nodes require separate STM8AF6223PCU units or external LIN transceivers with shared bus arbitration handled at protocol level.
STM8AF6223PCU 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6223PCU FAQ
1.How can I place an order for STM8AF6223PCU through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6223PCU 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 STM8AF6223PCU reliable?
The price and inventory of STM8AF6223PCU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6223PCU is usually 5 days.
3.What payment methods are accepted for STM8AF6223PCU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6223PCU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6223PCU?
STM8AF6223PCU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6223PCU 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 STM8AF6223PCU?
For technical support, including STM8AF6223PCU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6223PCU requirements.
6.How does Aetrix verify that STM8AF6223PCU is sourced from the original manufacturer or authorized distributors?
All STM8AF6223PCU 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 STM8AF6223PCU meets industry standards.
7.What is the process for return or replacement of STM8AF6223PCU?
All STM8AF6223PCU units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6223PCU, 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 STM8AF6223PCU part is unused and in its original packaging.
Return procedure for STM8AF6223PCU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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