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STMicroelectronics STM8AF6288TAY
- Part No.:
- STM8AF6288TAY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AF6288TAY.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,793
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Product details
Overview
STM8AF6288TAY from STMicroelectronics is an AEC-Q100 Grade 0 qualified automotive 8-bit microcontroller featuring a 24 MHz STM8A core, 128 Kbyte Flash program memory with 20-year data retention at 55 °C, 2 Kbyte true data EEPROM (300 kcycle endurance), and integrated CAN 2.0B interface operating up to 1 Mbit/s - deployed in engine control units for real-time sensor signal acquisition and actuator command execution.
For engineers reviewing the STM8AF6288TAY datasheet, STM8AF6288TAY pinout, STM8AF6288TAY application, or STM8AF6288TAY equivalent, this page delivers verified technical context, validated pin functions, automotive-grade thermal and EMC specifications, and direct substitution guidance for CAN-enabled powertrain and body electronics designs.
Technical Context
The STM8AF6288TAY implements a Harvard-architecture STM8A CPU with 3-stage pipeline and 1.6 cycles/instruction average, achieving 10 MIPS at 16 MHz. It integrates dual 16-bit general-purpose timers (each with up to 3 CAPCOM channels), an advanced control timer with dead-time insertion and 3 complementary outputs, and an 8-bit auto-wakeup timer.
Its communication subsystem includes a high-speed CAN 2.0B controller (1 Mbit/s), LINUART compliant with LIN 2.2 (master/slave with automatic resynchronization), USART with synchronous clock output, SPI up to 10 Mbit/s, and I²C up to 400 Kbit/s - all supported by nested interrupt controller with 32 vectors and up to 37 external interrupts on 5 vectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard core with 3-stage pipeline; enables deterministic timing for safety-critical automotive firmware. |
| Max fCPU | 24 MHz at VDD = 3–5.5 V; supports real-time control loops with sub-42 ns instruction cycle time. |
| Flash Memory | 128 Kbyte program Flash with 20-year data retention at 55 °C; sufficient for complex ECU boot + application code. |
| Data EEPROM | 2 Kbyte true data EEPROM with 300 kcycle endurance; stores calibration parameters and fault logs without external NV memory. |
| CAN Interface | CAN 2.0B compliant, 1 Mbit/s operation; meets ISO 11898-1 for robust in-vehicle network communication. |
| ADC Resolution | 10-bit SAR ADC with 2 LSB total unadjusted error (TUE) and 1 LSB linearity; suitable for precise analog sensor interfacing (e.g., throttle position, coolant temp). |
| Operating Temp | −40 °C to +150 °C ambient; qualified per AEC-Q100 Grade 0 for under-hood deployment without derating. |
Pinout & Package
LQFP64 package: 64-pin, 10 × 10 mm low-profile quad flat package with 0.5 mm pitch; RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD pins (pins 1, 33) and multiple VSS (pins 2, 32, 34, 64) enable low-noise power distribution for mixed-signal operation. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7 | General-purpose I/O ports | Up to 68 user pins; 11 high-sink I/Os (20 mA) support direct LED/relay drive; current-injection immune design ensures reliability in noisy automotive environments. |
| PD3/PD4 | CAN TX/RX | Dedicated differential CAN transceiver interface; supports direct connection to ISO 11898-compliant physical layer. |
| PA1/PA2 | USART1 TX/RX | Full-duplex asynchronous serial interface; PA1 also serves as LINUART master clock output for slave synchronization. |
| PC3/PC4 | SPI1 SCK/MOSI | High-speed synchronous interface up to 10 Mbit/s; used for flash programming, sensor data streaming, or display controller interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded CAN 2.0B controller | Hardware message filtering, 16 message objects, and automatic retransmission reduce CPU load in distributed vehicle networks. |
| True data EEPROM | 2 Kbyte on-chip nonvolatile memory with 300 kcycle write endurance eliminates need for external EEPROM in calibration-critical systems. |
| 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 driving. |
| LIN 2.2-compliant LINUART | Integrated LIN master/slave with automatic resynchronization and break detection simplifies body electronics node implementation without external LIN transceivers. |
| Low-power modes | Wait, auto-wakeup, Halt, and Active-halt modes with user-definable clock gating achieve <1 μA standby current for battery-sensitive modules. |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
Use Scenario: Real-time acquisition of crankshaft position, camshaft timing, and oxygen sensor signals; closed-loop fuel injection and ignition timing calculation. IC Role / Device Role / Timing Role: Primary MCU executing ASAM-compliant control algorithms with deterministic 100 μs interrupt latency and synchronized PWM output for coil drivers. Use Value: Integrated 10-bit ADC with hardware oversampling and CAN 2.0B enable seamless integration into existing powertrain CAN FD backbone without protocol translation. |
Use Scenario: Gear selection logic, solenoid valve sequencing, and torque converter clutch control in automatic transmissions. IC Role / Device Role / Timing Role: Safety-monitored controller managing up to 8 PWM outputs with dead-time protection and fault reporting via CAN diagnostics (UDS over CAN). Use Value: AEC-Q100 Grade 0 qualification and 150 °C operation ensure uninterrupted function during extended high-temperature transmission fluid conditions. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Centralized management of door locks, window lifts, lighting, and HVAC actuators across LIN subnetworks. IC Role / Device Role / Timing Role: LIN master coordinating up to 16 slave nodes; uses LINUART with automatic resynchronization to tolerate bus voltage fluctuations. Use Value: On-chip 2 Kbyte EEPROM stores personalized user settings (e.g., mirror positions, seat memory) with guaranteed 10-year retention in cabin temperature profiles. |
Use Scenario: Torque assist calculation, motor phase current sensing, and fail-safe torque reduction during sensor faults. IC Role / Device Role / Timing Role: Real-time controller executing FOC (Field-Oriented Control) with 16-bit advanced timer generating synchronized 3-phase PWM with <100 ns dead-time precision. Use Value: Dual 16-bit general-purpose timers and hardware ADC trigger synchronization enable <5 μs current loop update rates required for ISO 26262 ASIL-B compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive 8-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AF6269TAY | 64 Kbyte Flash, no CAN interface; identical LQFP64 package and peripheral set except CAN block omitted. | Suitable for LIN-only or UART/SPI-based body electronics where CAN bus connectivity is unnecessary. | Select when CAN is not required and cost-sensitive BOM optimization is prioritized over future network scalability. |
| Infineon XC886CM-8FF | 8051-compatible core, 64 Kbyte Flash, CAN 2.0B, but lacks integrated data EEPROM and LINUART; requires external EEPROM for parameter storage. | Used in legacy automotive platforms requiring 8051 toolchain compatibility; higher power consumption in Halt mode (2.5 μA vs. <1 μA). | Choose only if migration from existing XC886-based designs is needed; otherwise STM8AF6288TAY offers superior EEPROM integration and lower standby power. |
Compared with STM8AF6269TAY, the STM8AF6288TAY adds 64 Kbyte Flash and CAN - critical for scalable ECU architectures; versus XC886CM-8FF, it delivers on-chip EEPROM and lower-power modes, reducing component count and improving ASIL-B readiness.
Availability
STM8AF6288TAY 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 lifecycles.
Supply support for STM8AF6288TAY 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 STM8A product line targets cost-optimized, high-reliability automotive applications - specifically engineered for powertrain, chassis, and body electronics where AEC-Q100 Grade 0 operation, embedded CAN/LIN, and long-term supply stability are mandatory.
FAQ
What is the maximum junction temperature rating for STM8AF6288TAY?
The device is rated for operation up to +150 °C ambient temperature and qualified per AEC-Q100 Grade 0, which specifies a maximum junction temperature (Tj) of +175 °C under continuous operation with appropriate PCB thermal design - confirmed in Section 10.3 of the official datasheet (DocID14395 Rev 15, p.62).
Does STM8AF6288TAY support SWD or only SWIM for debugging?
It supports Single-Wire Interface Module (SWIM) only - a proprietary ST debug interface using a single bidirectional pin (SWIM) for programming and real-time debugging; SWD (ARM Serial Wire Debug) is not supported as the STM8A core is not ARM-based.
Can the internal 16 MHz RC oscillator be calibrated for improved accuracy?
Yes - the 16 MHz high-speed internal RC oscillator (HSI) is user-trimmable via the CLK_HSITRIMR register; factory-trimmed to ±1% at 25 °C, and field calibration can achieve ±0.5% accuracy across temperature using an external reference clock input on the OSC_IN pin.
Is there hardware support for CRC calculation in STM8AF6288TAY?
No - the STM8AF6288TAY does not include a dedicated hardware CRC module; CRC-16 or CRC-32 must be implemented in firmware using the built-in 16-bit multiply/divide instructions and lookup tables, as confirmed in the peripheral overview (Section 5.7.4) and register map (Section 7.2).
STM8AF6288TAY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8A
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8A
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 10x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6288TAY FAQ
1.How can I place an order for STM8AF6288TAY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6288TAY 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 STM8AF6288TAY reliable?
The price and inventory of STM8AF6288TAY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6288TAY is usually 5 days.
3.What payment methods are accepted for STM8AF6288TAY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6288TAY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6288TAY?
STM8AF6288TAY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6288TAY 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 STM8AF6288TAY?
For technical support, including STM8AF6288TAY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6288TAY requirements.
6.How does Aetrix verify that STM8AF6288TAY is sourced from the original manufacturer or authorized distributors?
All STM8AF6288TAY 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 STM8AF6288TAY meets industry standards.
7.What is the process for return or replacement of STM8AF6288TAY?
All STM8AF6288TAY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6288TAY, 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 STM8AF6288TAY part is unused and in its original packaging.
Return procedure for STM8AF6288TAY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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