My Inquiry
My Account
STMicroelectronics STM8AF6223PCAU
- Part No.:
- STM8AF6223PCAU
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8AF6223PCAU.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,040
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM8AF6223PCAU from STMicroelectronics is an AEC-Q100 qualified automotive-grade 8-bit MCU featuring a 16 MHz STM8A core, 8 Kbyte Flash memory with 20-year data retention at 55 °C, 640 byte EEPROM (300 kcycle endurance), and integrated 10-bit ADC with 7 muxed channels. It supports LIN 2.2 communication, SPI up to 8 Mbit/s, I²C up to 400 Kbit/s, and operates across –40 to 150 °C for engine control unit (ECU) sensor interface applications.
For engineers reviewing the STM8AF6223PCAU datasheet, STM8AF6223PCAU pinout, STM8AF6223PCAU application, or STM8AF6223PCAU equivalent, key selection criteria include automotive temperature grade (–40 to 150 °C), LINUART master/slave compliance, high-sink I/O capability (21 pins), embedded EEPROM endurance, and clock security system with monitor.
Technical Context
The STM8AF6223PCAU 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 trimmable 16 MHz RC and low-power 128 kHz RC oscillators, plus external crystal support with clock security monitoring.
Interrupt handling uses a nested controller supporting 32 vectors and up to 28 external interrupts across 7 priority levels. Peripheral integration includes an advanced 16-bit timer (TIM1) with dead-time insertion and complementary outputs, two general-purpose timers (TIM5, TIM6), and analog watchdog functionality within the 10-bit ADC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard core with 3-stage pipeline; enables deterministic timing for automotive control loops. |
| Max CPU Frequency | 16 MHz at VDD = 3.3–5.5 V; supports real-time response in ECU timing-critical tasks. |
| Flash Memory | 8 Kbyte program Flash; retains data ≥20 years at 55 °C after 1,000 write cycles. |
| Data EEPROM | 640 byte true EEPROM; withstands 300,000 erase/write cycles for calibration storage. |
| ADC Resolution | 10-bit SAR ADC with ±1 LSB INL/DNL; supports precise sensor signal digitization (e.g., throttle position). |
| Operating Temperature | –40 to +150 °C ambient; qualified for under-hood automotive deployment per AEC-Q100 Grade 0. |
| I/O Sink Capability | 21 high-sink I/Os (up to 50 mA per pin); drives solenoids, LEDs, and discrete loads without external buffers. |
| LIN Compliance | LINUART module compliant with LIN 2.2 specification; supports automatic resynchronization in noisy vehicle networks. |
Pinout & Package
LQFP32 package (7 × 7 mm, 0.8 mm pitch), RoHS-compliant, with 32-pin layout optimized for automotive PCB routing and thermal dissipation in constrained ECU modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 3.3–5.5 V supply rail; decoupled via external 100 nF capacitor per datasheet Section 10.3.1. |
| VSS | Ground reference | Digital ground plane connection; separate analog ground not required due to integrated noise-immune design. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2–5.5 V logic; supports external watchdog or power-on reset assertion. |
| PA0–PA7 | Programmable I/O port A | 8-bit bidirectional port with high-sink capability (50 mA); configurable as LINUART TX/RX, ADC inputs, or timer capture/compare. |
| PC0–PC7 | Programmable I/O port C | 8-bit port supporting SPI SCK/MOSI/MISO, I²C SCL/SDA, and TIM1 complementary outputs with dead-time control. |
| PD0–PD7 | Programmable I/O port D | 8-bit port with alternate functions including TIM5 channels, ADC external trigger, and auto-wakeup timer input. |
| SWIM | Single-wire interface module | Debug and programming interface using single pin; enables in-circuit programming and real-time variable inspection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for continuous operation at 150 °C junction temperature; meets automotive reliability and stress-test requirements. |
| Embedded data EEPROM | 640-byte on-chip EEPROM with 300 kcycle endurance; eliminates need for external nonvolatile memory in calibration-critical systems. |
| LIN 2.2-compliant UART | Hardware LIN transceiver with automatic baud rate resynchronization; reduces software overhead in body control modules. |
| Advanced control timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time; enables precise 3-phase motor gate drive. |
| Low-power clock security system | Dedicated clock monitor detects HSE/HSI failure and triggers safe state entry; satisfies ISO 26262 ASIL-B functional safety requirements. |
| High sink I/O capability | 21 pins rated for 50 mA sink current; directly interfaces with automotive actuators (e.g., fuel injectors, relays) without external drivers. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time acquisition of crankshaft position, coolant temperature, and throttle angle signals in gasoline/diesel engine management. IC Role / Device Role / Timing Role: Primary 8-bit controller executing closed-loop fuel injection timing and spark advance algorithms with sub-millisecond latency. Use Value: Integrated 10-bit ADC with analog watchdog ensures reliable sensor fault detection; LINUART enables communication with dashboard and transmission ECUs. |
Use Scenario: Centralized control of door locks, interior lighting, window lifters, and mirror adjustment in passenger vehicles. IC Role / Device Role / Timing Role: System coordinator managing multiple LIN slave nodes and local I/O expansion via high-sink GPIOs. Use Value: 21 high-sink I/Os drive solenoids and lamps directly; EEPROM stores user preferences and fault logs across vehicle lifetime. |
| Transmission Control Unit (TCU) | Heating/Ventilation/Air Conditioning (HVAC) |
Use Scenario: Monitoring gear position sensors, turbine speed, and hydraulic pressure to manage clutch engagement and shift scheduling. IC Role / Device Role / Timing Role: Safety-relevant controller implementing ASIL-B–compliant diagnostics and fail-safe torque reduction routines. Use Value: Clock security system and nested interrupt controller ensure deterministic response to critical CAN/LIN messages during gear shifts. |
Use Scenario: Regulating blower motor speed, air flap position, and cabin temperature via PWM-driven actuators and thermistor feedback. IC Role / Device Role / Timing Role: Dedicated HVAC subsystem controller interfacing with NTC sensors, stepper motors, and LIN climate panel. Use Value: TIM1's dead-time insertion prevents shoot-through in half-bridge fan drivers; 150 °C rating supports under-dash mounting near heat sources. |
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 |
|---|---|---|---|
| STM8AF6226QY | Same core and peripherals but in VFQFPN32 (5×5 mm) package; identical electrical specs and temperature range. | Preferred for space-constrained PCB layouts requiring finer pitch and lower profile than LQFP32. | Select when board area or Z-height is critical; pin-compatible with STM8AF6223PCAU except for VCAP pin location. |
| RL78/F13-CD | Renesas RL78 core (16-bit), 32 MHz max, 64 Kbyte Flash, 4 Kbyte RAM; higher performance but larger code footprint. | Used in next-generation ECUs where mixed-signal integration and ASIL-C readiness are required. | Choose for migration paths needing enhanced compute headroom while retaining LIN/I²C compatibility and automotive qualification. |
Compared with STM8AF6226QY, the STM8AF6223PCAU offers identical functionality in a more manufacturable LQFP32 package; versus RL78/F13-CD, it delivers lower BOM cost and smaller memory footprint for established 8-bit automotive designs without requiring toolchain requalification.
Availability
STM8AF6223PCAU is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and HVAC subsystems requiring stable component supply across extended automotive product lifecycles.
Supply support for STM8AF6223PCAU 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, safety-aware applications such as powertrain, chassis, and body electronics, emphasizing AEC-Q100 qualification, embedded nonvolatile memory, and robust peripheral integration for harsh environments.
FAQ
What is the maximum operating junction temperature for STM8AF6223PCAU?
The STM8AF6223PCAU is rated for a maximum junction temperature of +150 °C and qualified per AEC-Q100 Grade 0. This allows direct placement in high-temperature under-hood locations without forced cooling, provided PCB copper pour and thermal vias meet ST's recommended layout guidelines in AN4909.
Does STM8AF6223PCAU support in-circuit debugging without additional hardware?
Yes - the device integrates a Single-Wire Interface Module (SWIM) accessible via one dedicated pin (pin 12 in LQFP32). ST-LINK/V2 or compatible debuggers enable full read/write memory access, breakpoint setting, and real-time register inspection without JTAG header or external probes.
How is LIN bus communication implemented on this MCU?
LIN communication is handled by the integrated LINUART peripheral, which supports both master and slave modes per LIN 2.2. It features automatic resynchronization, configurable baud rates (1–20 kbit/s), and hardware checksum generation - eliminating software bit-banging and reducing CPU load in body network nodes.
Can the internal 16 MHz RC oscillator be calibrated for improved accuracy?
Yes - the internal high-speed RC oscillator (HSI) is user-trimmable via the CLK_HSITRIMR register, allowing ±1% frequency adjustment across process and temperature variations. Calibration is performed during production or field programming using a known external reference clock source.
STM8AF6223PCAU 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6223PCAU FAQ
1.How can I place an order for STM8AF6223PCAU through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6223PCAU 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 STM8AF6223PCAU reliable?
The price and inventory of STM8AF6223PCAU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6223PCAU is usually 5 days.
3.What payment methods are accepted for STM8AF6223PCAU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6223PCAU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6223PCAU?
STM8AF6223PCAU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6223PCAU 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 STM8AF6223PCAU?
For technical support, including STM8AF6223PCAU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6223PCAU requirements.
6.How does Aetrix verify that STM8AF6223PCAU is sourced from the original manufacturer or authorized distributors?
All STM8AF6223PCAU 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 STM8AF6223PCAU meets industry standards.
7.What is the process for return or replacement of STM8AF6223PCAU?
All STM8AF6223PCAU units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6223PCAU, 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 STM8AF6223PCAU part is unused and in its original packaging.
Return procedure for STM8AF6223PCAU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM8AF6223PCAU Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
