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STMicroelectronics STM8AF6213PCAX
- Part No.:
- STM8AF6213PCAX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6213PCAX.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,790
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Product details
Overview
STM8AF6213PCAX from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit microcontroller featuring a 16 MHz STM8A core, 4 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 for sensor signal acquisition and actuator command sequencing.
For engineers reviewing the STM8AF6213PCAX datasheet, STM8AF6213PCAX pinout, STM8AF6213PCAX application, or STM8AF6213PCAX equivalent, key selection criteria include automotive-grade temperature range (–40 to 150 °C), LIN bus compliance, on-chip data EEPROM endurance (300 kcycle), low-power modes with auto-wakeup, and TSSOP20 package compatibility with space-constrained under-hood PCB layouts.
Technical Context
This MCU implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, supporting nested interrupts across 32 vectors including up to 28 external sources. Clock management integrates trimmable 16 MHz HSI RC, 128 kHz LSI RC, and external crystal/resonator input with clock security monitoring.
Analog subsystem includes a 10-bit ADC with ±1 LSB INL, scan mode, analog watchdog, and internal reference voltage measurement. Communication stack comprises LINUART (master/slave, automatic resync), SPI up to 8 Mbit/s, and I²C up to 400 Kbit/s - all accessible via remappable GPIOs in the TSSOP20 footprint.
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 safety-critical automotive routines. |
| Max CPU Frequency | 16 MHz at VDD = 3.3–5.5 V - supports fast control loop closure for engine timing and fuel injection sequencing. |
| Flash Memory | 4 Kbyte program Flash with 20-year data retention at 55 °C after 1 kcycle - suitable for field-updatable firmware in long-lifecycle powertrain ECUs. |
| Data EEPROM | 640 byte true data EEPROM with 300 kcycle endurance - stores calibration parameters, fault logs, and adaptive learning values without external NV memory. |
| ADC Resolution | 10-bit SAR ADC with ±1 LSB integral nonlinearity and 7 muxed input channels - delivers precise throttle position, coolant temperature, and oxygen sensor digitization. |
| Operating Temperature | –40 to +150 °C ambient - certified for placement directly on engine control units near heat sources without derating. |
| LIN Compliance | LIN 2.2 compliant UART with automatic resynchronization - enables robust communication with sensors and actuators in distributed automotive networks. |
Pinout & Package
TSSOP20 (6.4 × 4.4 mm, 0.65 mm pitch) package with 20 pins, optimized for high-density automotive PCBs and reflow-compatible assembly. Pin functions validated per DS9884 Rev 9 Section 5.1 and Table 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary 3.3–5.5 V supply rail; decoupled via external 100 nF capacitor to ensure stable core and peripheral operation under load transients. |
| VSS | GND reference | Digital ground return path; separate analog ground not required due to integrated noise-immune design. |
| NRST | Active-low reset | Asynchronous reset input with internal pull-up; accepts 1.2–5.5 V logic levels and supports external watchdog or power-on reset coordination. |
| PA0–PA7 | General-purpose I/O | 8-bit port with high sink capability (up to 20 mA); configurable as LIN TX/RX, SPI, I²C, or ADC inputs with programmable pull-ups. |
| PD0–PD3 | Multifunction I/O | 4-pin port supporting LINUART alternate function, timer capture/compare, and external interrupt triggers - enables compact LIN node implementation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Grade 0 (–40 to +150 °C) certification confirmed - eliminates need for additional qualification testing in engine compartment applications. |
| Low-power modes | Wait, auto-wakeup, and halt modes with user-definable clock gating - reduces quiescent current to <1.5 µA in active halt, extending battery life in always-on systems. |
| Advanced timer TIM1 | 16-bit advanced control timer with dead-time insertion and 3 complementary outputs - directly drives 3-phase motor gate drivers or ignition coil drivers without external logic. |
| Internal oscillators | User-trimmable 16 MHz HSI and 128 kHz LSI RC - eliminates external crystal cost and board space while maintaining ±2% frequency accuracy over temperature. |
| I/O robustness | Immunity to current injection up to 100 mA per pin - withstands ESD and load dump events common in 12 V automotive electrical systems. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time acquisition of crankshaft position, camshaft timing, and manifold pressure signals; closed-loop control of fuel injectors and ignition coils. IC Role / Device Role / Timing Role: Primary controller executing deterministic control algorithms with sub-microsecond interrupt latency and synchronized PWM output generation. Use Value: Integrated 16-bit advanced timer with dead-time insertion enables direct driving of high-side/low-side MOSFET pairs for ignition coil energy discharge, reducing BOM count by two gate drivers. | Use Scenario: Centralized management of door locks, window lifters, interior lighting, and HVAC fan speed across multiple CAN/LIN nodes. IC Role / Device Role / Timing Role: LIN master node coordinating slave peripherals; handles protocol framing, checksum validation, and scheduled message transmission. Use Value: Hardware-accelerated LIN 2.2 UART with automatic resynchronization tolerates ±15% baud rate drift between nodes - eliminating software-based bit timing compensation and improving network reliability. |
| Transmission Control Unit (TCU) | Electric Power Steering (EPS) |
Use Scenario: Monitoring gear selector position, turbine speed, and hydraulic pressure; controlling solenoid valves and shift actuators during gear changes. IC Role / Device Role / Timing Role: Safety-relevant controller managing fail-safe torque reduction and limp-home mode activation via monitored PWM outputs. Use Value: 640 byte data EEPROM retains adaptive shift calibration and fault history across 300,000+ cycles - enabling predictive maintenance without external FRAM or serial EEPROM. | Use Scenario: Torque assist calculation using steering angle, vehicle speed, and motor current feedback; generating phase-commutated PWM for brushless assist motor. IC Role / Device Role / Timing Role: Real-time motor controller interfacing with Hall-effect sensors and driving 3-phase inverter bridge via complementary PWM outputs. Use Value: TIM1's flexible synchronization and dead-time insertion ensures safe commutation sequencing, preventing shoot-through in high-current motor drive stages. |
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 |
|---|---|---|---|
| STM8AF6223PCAX | 8 Kbyte Flash, same peripherals and package - doubles program memory capacity without changing pinout or firmware architecture. | Required where larger bootloader, OTA update partition, or expanded diagnostic code space is needed. | Select when future firmware growth headroom or dual-bank update capability is mandated. |
| RL78/F13-CD-20 | Renesas RL78 core, 20 MHz max, 8 Kbyte Flash, 1 Kbyte RAM, LIN support - different ISA, toolchain, and register mapping. | Used in Japanese OEM platforms requiring Renesas ecosystem alignment and JIS-compliant qualification. | Choose only when migrating within existing RL78-based design infrastructure or meeting specific regional supplier mandates. |
Compared with STM8AF6213PCAX, STM8AF6223PCAX offers scalable Flash capacity in identical form factor, while RL78/F13-CD-20 introduces architectural divergence requiring full firmware rework but provides higher clock speed and larger RAM - making it suitable for new designs prioritizing toolchain continuity over drop-in replacement.
Availability
STM8AF6213PCAX is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across extended automotive product lifecycles.
Supply support for STM8AF6213PCAX 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 ICs, sensors, and automotive-grade silicon for industrial and transportation markets.
The STM8AF automotive microcontroller line targets cost-sensitive, high-reliability engine and chassis control applications, emphasizing AEC-Q100 Grade 0 qualification, on-chip nonvolatile memory, and LIN/CAN-ready communication interfaces.
FAQ
What is the maximum operating junction temperature for STM8AF6213PCAX?
The device is rated for operation up to +150 °C ambient temperature, with a maximum junction temperature of +165 °C under specified thermal conditions. This rating is validated per AEC-Q100 Grade 0 requirements and confirmed in DS9884 Rev 9 Section 10.3, enabling direct mounting on high-temperature engine control boards without heatsinking.
Does STM8AF6213PCAX support in-circuit debugging via SWIM interface?
Yes, it features a Single Wire Interface Module (SWIM) supporting full-speed in-circuit debugging, flash programming, and real-time variable inspection using ST-LINK/V2 or compatible debug probes. SWIM operates at up to 2 MHz and requires only one dedicated pin (SWIM) plus VDD/VSS, as documented in Section 4.2.1 of the datasheet.
Can the internal 16 MHz RC oscillator be calibrated for improved accuracy?
Yes, the HSI oscillator supports user trimming via the CLK_HSITRIMR register, allowing adjustment in steps of ±0.5% across a ±8% total range. Calibration is performed during production or field initialization using an external reference clock, achieving ±2% accuracy over –40 to +150 °C as verified in Table 42 of DS9884 Rev 9.
Is there hardware support for LIN bus checksum calculation and verification?
Yes, the LINUART peripheral includes dedicated hardware for generating and verifying LIN 2.2 checksums (classic and enhanced) without CPU intervention. It automatically inserts checksum bytes during transmission and flags errors on reception, reducing firmware overhead and ensuring protocol compliance per ISO 17987-4.
STM8AF6213PCAX 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:
- 4KB (4K 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6213PCAX FAQ
1.How can I place an order for STM8AF6213PCAX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6213PCAX 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 STM8AF6213PCAX reliable?
The price and inventory of STM8AF6213PCAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6213PCAX is usually 5 days.
3.What payment methods are accepted for STM8AF6213PCAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6213PCAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6213PCAX?
STM8AF6213PCAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6213PCAX 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 STM8AF6213PCAX?
For technical support, including STM8AF6213PCAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6213PCAX requirements.
6.How does Aetrix verify that STM8AF6213PCAX is sourced from the original manufacturer or authorized distributors?
All STM8AF6213PCAX 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 STM8AF6213PCAX meets industry standards.
7.What is the process for return or replacement of STM8AF6213PCAX?
All STM8AF6213PCAX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6213PCAX, 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 STM8AF6213PCAX part is unused and in its original packaging.
Return procedure for STM8AF6213PCAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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