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STMicroelectronics STM8AF6213PCU
- Part No.:
- STM8AF6213PCU
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6213PCU.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,406
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Product details
Overview
STM8AF6213PCU 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 STM8AF6213PCU datasheet, STM8AF6213PCU pinout, STM8AF6213PCU application, or STM8AF6213PCU equivalent, key selection criteria include automotive temperature grade (–40 to 150 °C), LIN physical layer compliance, high-sink I/O capability (21 pins), Flash data retention (20 years at 55 °C), and embedded watchdog/timers for safety-critical timing supervision.
Technical Context
The STM8AF6213PCU 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. Its clock system integrates trimmable 16 MHz HSI and 128 kHz LSI RC oscillators plus external crystal support, all monitored by a dedicated clock security system.
Analog and timing subsystems include a 10-bit ADC with analog watchdog and scan mode, an advanced 16-bit TIM1 timer with dead-time insertion and complementary outputs, and dual 16-bit/8-bit general-purpose timers - enabling precise PWM generation, motor phase control, and periodic wake-up in low-power modes.
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 VDD = 3.3–5.5 V - supports real-time control loops with sub-microsecond interrupt latency. |
| Flash Memory | 4 Kbyte program Flash with 20-year data retention at 55 °C after 1 kcycle - suitable for field-updatable firmware in harsh environments. |
| Data EEPROM | 640 byte true data EEPROM with 300 kcycle endurance - retains calibration data, fault logs, and configuration parameters across power cycles. |
| ADC Resolution | 10-bit SAR ADC with ±1 LSB INL/DNL, 7 muxed input channels + 1 internal reference channel - delivers accurate sensor voltage digitization for throttle position or coolant temperature. |
| LIN Interface | LINUART compliant with LIN 2.2 specification, supporting master/slave modes and automatic resynchronization - enables robust single-wire communication with automotive sensors and actuators. |
| Operating Temperature | –40 °C to +150 °C ambient - certified for under-hood deployment in engine management and transmission control units. |
| I/O Sink Capability | 21 high-sink I/O pins (up to 100 mA per pin) - directly drives solenoids, relays, and LEDs without external drivers in space-constrained modules. |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 32-pin layout optimized for automotive PCB routing and thermal dissipation in high-temperature environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 3.3–5.5 V supply rail; decoupled via external 100 nF capacitor to ensure stable core and peripheral operation. |
| VSS | Ground reference | Digital ground plane connection; separate analog ground not required due to integrated noise-immune design. |
| NRST | Reset input | Active-low reset with internal pull-up; accepts 1.2–VDD logic levels and supports external reset supervisor ICs. |
| PA0–PA7 | Programmable I/O port A | 8-bit bidirectional port with high-sink capability (100 mA); supports alternate functions including TIM1 CH1–CH4 and ADC1_IN0–IN7. |
| PB0–PB7 | Programmable I/O port B | 8-bit bidirectional port; includes LINUART TX/RX on PB1/PB2 and SPI SCK/MOSI/MISO on PB3–PB5. |
| PC0–PC7 | Programmable I/O port C | 8-bit bidirectional port; provides TIM1 complementary outputs (PC4–PC6), I²C SCL/SDA (PC6/PC7), and additional ADC inputs. |
| PD0–PD7 | Programmable I/O port D | 8-bit bidirectional port; includes TIM5 channels, auto-wakeup timer input, and SWIM debug interface on PD0. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for operation from –40 °C to +150 °C ambient - meets automotive powertrain reliability requirements without derating. |
| Embedded LIN 2.2 UART | Hardware-accelerated LIN transceiver with automatic baud rate detection and resynchronization - eliminates software timing overhead and improves bus fault tolerance. |
| Advanced TIM1 timer | 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. |
| True data EEPROM | 640 byte nonvolatile memory with 300 kcycle endurance and byte-level erase - stores adaptive learning values and diagnostic event counters across vehicle lifetime. |
| Low-power modes | Wait, auto-wakeup, and active halt modes with configurable clock gating - reduces current consumption to ≤1.5 µA in halt mode while retaining RAM and register state. |
| Robust I/O immunity | High sink outputs immune to current injection up to 100 mA - prevents latch-up during load dump or ESD events in 12 V automotive systems. |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
Use Scenario: Real-time monitoring of crankshaft position, camshaft timing, and oxygen sensor feedback to compute fuel injection timing and spark advance. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop combustion control algorithms with sub-100 µs interrupt response and synchronized PWM output to injector drivers. Use Value: Integrated 10-bit ADC with analog watchdog ensures valid sensor readings; LIN interface enables diagnostics and parameter reprogramming over vehicle network. |
Use Scenario: Managing solenoid valve sequencing, pressure regulation, and gear shift logic in automatic transmissions under varying thermal and vibration conditions. IC Role / Device Role / Timing Role: Safety-critical controller coordinating hydraulic actuation timing, torque converter lock-up, and fault-safe fallback modes using window watchdog and independent watchdog timers. Use Value: High-sink I/Os directly drive 12 V solenoids; 150 °C rating maintains functionality during prolonged high-load operation near transmission housing. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Centralized management of lighting, door locks, window lifts, and HVAC fan speed in entry-level vehicles with cost-sensitive BOM targets. IC Role / Device Role / Timing Role: Low-cost, high-integration MCU handling multiple asynchronous I/O events, LIN communication with remote nodes, and PWM-controlled fan drivers. Use Value: 4 Kbyte Flash and 640 byte EEPROM provide sufficient storage for feature-rich firmware and persistent user preferences without external memory. |
Use Scenario: Torque assist calculation and motor phase commutation in column-assist EPS systems requiring functional safety and electromagnetic resilience. IC Role / Device Role / Timing Role: Real-time motor controller generating synchronized 3-phase PWM with dead-time compensation and ADC sampling of motor current and position sensors. Use Value: TIM1's complementary outputs and dead-time insertion eliminate external gate driver ICs; AEC-Q100 qualification ensures ASIL-B readiness. |
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 |
|---|---|---|---|
| STM8AF6223PCU | 8 Kbyte Flash, identical peripherals and pinout - differs only in program memory size and option byte configuration. | Supports larger firmware images with complex diagnostics or bootloader features; same thermal and electrical behavior in production hardware. | Select when future firmware expansion or dual-bank update capability is required without PCB redesign. |
| RL78/F13 | Renesas RL78 core, 20 MHz max, 16 Kbyte Flash, 1.25 Kbyte RAM - different architecture, instruction set, and toolchain; no native LIN hardware. | Requires software LIN stack implementation; higher RAM supports more concurrent tasks but increases BOM cost and power consumption. | Consider only if migrating to Renesas ecosystem or requiring higher processing throughput for non-safety-critical body electronics. |
Compared with STM8AF6223PCU, the STM8AF6213PCU trades Flash capacity for lower cost and smaller die size while maintaining identical timing, I/O, and safety features; versus RL78/F13, it offers hardware LIN, lower power in halt mode, and proven AEC-Q100 Grade 0 qualification for powertrain use.
Availability
STM8AF6213PCU is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and electric power steering systems requiring stable component supply across extended automotive product lifecycles.
Supply support for STM8AF6213PCU 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 specializing in automotive, industrial, and power management solutions, with over 40 years of microcontroller innovation and AEC-Q100 validation expertise.
The STM8AF series is designed specifically for automotive powertrain and chassis applications, emphasizing functional safety, high-temperature reliability, and integrated LIN/ADC/timer subsystems to reduce system-level complexity.
FAQ
What is the maximum operating junction temperature for STM8AF6213PCU?
The device is rated for ambient temperatures from –40 °C to +150 °C and has a maximum junction temperature of +175 °C under specified thermal conditions. Thermal resistance θJA is 45 °C/W for the LQFP32 package, requiring appropriate PCB copper area and airflow for sustained 150 °C ambient operation.
Does STM8AF6213PCU support in-circuit debugging via SWIM?
Yes - the device includes a Single Wire Interface Module (SWIM) accessible on PD0, enabling full-speed debugging, flash programming, and real-time variable inspection using ST-LINK/V2 or compatible debug probes without requiring additional pins or JTAG headers.
How is LIN bus synchronization handled in hardware?
The integrated LINUART peripheral performs automatic resynchronization on each header byte using internal baud rate measurement, eliminating need for external crystals or software-based timing recovery - ensuring reliable communication even with ±15% oscillator tolerance and bus voltage fluctuations.
Can the 640-byte data EEPROM be used for secure key storage?
No - the data EEPROM lacks hardware encryption or read-out protection beyond standard option byte ROP level 1 (which prevents debugger access but does not encrypt stored content). For cryptographic key storage, external secure elements or STM32G0-series MCUs with hardware crypto accelerators are recommended.
STM8AF6213PCU 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:
- 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 5x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6213PCU FAQ
1.How can I place an order for STM8AF6213PCU through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6213PCU 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 STM8AF6213PCU reliable?
The price and inventory of STM8AF6213PCU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6213PCU is usually 5 days.
3.What payment methods are accepted for STM8AF6213PCU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6213PCU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6213PCU?
STM8AF6213PCU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6213PCU 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 STM8AF6213PCU?
For technical support, including STM8AF6213PCU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6213PCU requirements.
6.How does Aetrix verify that STM8AF6213PCU is sourced from the original manufacturer or authorized distributors?
All STM8AF6213PCU 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 STM8AF6213PCU meets industry standards.
7.What is the process for return or replacement of STM8AF6213PCU?
All STM8AF6213PCU units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6213PCU, 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 STM8AF6213PCU part is unused and in its original packaging.
Return procedure for STM8AF6213PCU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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