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STMicroelectronics STM8AF5288TAX
- Part No.:
- STM8AF5288TAX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AF5288TAX.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,104
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Product details
Overview
STM8AF5288TAX 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 STM8AF5288TAX datasheet, STM8AF5288TAX pinout, STM8AF5288TAX application, or STM8AF5288TAX equivalent, key selection criteria include automotive-grade temperature range (−40 °C to 150 °C), LIN 2.2-compliant UART with automatic resynchronization, 10-bit ADC with 2 LSB total unadjusted error, and dual 16-bit general-purpose timers with CAPCOM channels for motor phase timing control.
Technical Context
The STM8AF5288TAX implements a Harvard-architecture STM8A CPU with 3-stage pipeline and average 1.6 cycles/instruction throughput, enabling 10 MIPS at 16 MHz. Its clock system integrates user-trimmable 16 MHz RC and low-power 128 kHz RC oscillators, plus external crystal support up to 24 MHz with clock security monitoring.
Peripheral integration includes a dedicated beCAN controller compliant with ISO 11898-1, LINUART supporting master/slave modes with hardware resync, and an advanced control timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion - essential for three-phase inverter gate drive synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard CPU with 3-stage pipeline; enables deterministic interrupt latency and efficient code density for safety-critical automotive firmware. |
| Max fCPU | 24 MHz; supports real-time control loops with sub-42 ns instruction cycle time at full speed. |
| Flash Memory | 128 Kbyte Flash with 20-year data retention at 55 °C; allows field-upgradable ECU firmware with long-term reliability in under-hood environments. |
| Data EEPROM | 2 Kbyte true data EEPROM, 300 kcycle endurance; stores calibration parameters and fault logs without external nonvolatile memory. |
| CAN Interface | CAN 2.0B compliant, 1 Mbit/s data rate; meets automotive network requirements for powertrain communication with built-in message filtering and FIFO buffering. |
| ADC Resolution | 10-bit SAR ADC with 2 LSB total unadjusted error and 1 LSB linearity; delivers accurate throttle position and temperature sensing across full automotive temperature range. |
| Operating Temperature | −40 °C to +150 °C; qualified per AEC-Q100 Grade 0 for direct mounting on engine blocks and transmission control modules. |
| I/O Count | Up to 68 user pins including 11 high-sink I/Os; supports direct LED driving and robust sensor interfacing with current injection immunity. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, automotive-qualified lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation under load transients; supports 3–5.5 V supply range with internal voltage regulation. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset sources and supports low-power wakeup via reset pin edge detection. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7 | General-purpose bidirectional I/O | Configurable as digital input/output, analog input, or alternate function (e.g., TIM1_CH1, USART1_TX); 11 pins support 20 mA sink capability for direct solenoid driver interface. |
| PD0/PD1 | CAN TX/RX | Dedicated differential CAN physical layer interface; connects directly to ISO 11898-compliant transceiver without level-shifting or external components. |
| PA3/PA4 | LINUART TX/RX | Single-wire LIN bus interface compliant with LIN 2.2 specification; supports automatic baud rate resynchronization during slave node wake-up. |
| PC0/PC1 | USART1 TX/RX | Full-duplex asynchronous serial interface with clock output option for synchronous mode; enables daisy-chain programming of multiple ECUs. |
| PC2/PC3 | SPI SCK/MOSI | Master or slave SPI interface up to 10 Mbit/s; used for flash memory programming and sensor data streaming with hardware CRC generation. |
| PC4/PC5 | I2C SCL/SDA | Standard-mode (100 kbit/s) and fast-mode (400 kbit/s) I2C interface; supports multi-master arbitration and 7-bit/10-bit addressing for EEPROM and sensor hub communication. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Control Timer (TIM1) | 16-bit counter with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion - enables precise gate drive sequencing for BLDC motor inverters. |
| Embedded LINUART | Hardware LIN 2.2 compliance with automatic resynchronization and master/slave mode switching - eliminates software-based timing compensation in body control modules. |
| Flash Security | Read-out protection (ROP), write protection (WP), and user boot code (UBC) locking - prevents unauthorized firmware extraction and ensures bootloader integrity in certified automotive systems. |
| Low-Power Modes | Wait, auto-wakeup, and Halt modes with configurable clock gating; achieves <1 μA standby current with RTC active, extending battery life in always-on vehicle subsystems. |
| Analog Peripherals | 10-bit ADC with up to 16 multiplexed channels, 2 LSB TUE, and hardware-accelerated scan mode - supports simultaneous sampling of engine coolant, intake air, and exhaust gas sensors. |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
Use Scenario: Real-time processing of crankshaft position, camshaft timing, and oxygen sensor signals to compute fuel injection timing and spark advance. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop combustion control algorithms with deterministic 100 μs interrupt response for cylinder-specific event triggering. Use Value: Integrated CAN 2.0B and LINUART enable seamless coordination with other powertrain nodes while 150 °C operation permits direct mounting near engine block. |
Use Scenario: Monitoring turbine speed, gear position switches, and hydraulic pressure sensors to manage shift solenoid activation and torque converter clutch engagement. IC Role / Device Role / Timing Role: Safety-critical controller managing ASIL-B-relevant functions via hardware watchdog supervision and memory ECC parity checking. Use Value: 2 Kbyte data EEPROM stores adaptive shift learning profiles and fault history without external nonvolatile memory, reducing BOM cost and board space. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Centralized management of door lock actuators, window lift motors, and interior lighting with LIN slave node communication to distributed sensors. IC Role / Device Role / Timing Role: LIN master coordinating up to 16 slave nodes using hardware-resynchronized baud rate generation and automatic header detection. Use Value: 11 high-sink I/Os drive 20 mA loads directly, eliminating discrete transistor drivers for window motor control and reducing component count. |
Use Scenario: Torque assist calculation using steering angle, vehicle speed, and motor current feedback to drive three-phase inverter bridge. IC Role / Device Role / Timing Role: Real-time PWM generator with TIM1's dead-time insertion and complementary outputs ensuring safe FET switching sequence. Use Value: Advanced control timer eliminates external gate driver ICs and reduces PCB layout complexity for compact EPS motor control units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AF6288TAY | No CAN interface; retains LINUART, same Flash/EEPROM size and 150 °C rating. | Suitable for body electronics where CAN is not required but LIN and high-temp operation remain critical. | Select when CAN bus connectivity is unnecessary and cost reduction is prioritized without sacrificing temperature grade or LIN functionality. |
| SPC560B50L5 | 32-bit Power Architecture core, 64 MHz, 512 Kbyte Flash, ISO 26262 ASIL-B ready. | Targets higher ASIL levels and complex motor control algorithms requiring floating-point math acceleration. | Choose for next-generation EPS or ADAS-adjacent systems requiring functional safety certification beyond AEC-Q100 Grade 0. |
Compared with STM8AF6288TAY, the STM8AF5288TAX adds CAN 2.0B for powertrain networking but shares identical LIN, ADC, and timer capabilities; versus SPC560B50L5, it offers lower cost and smaller footprint for legacy ECU upgrades where ASIL-B is not mandated.
Availability
STM8AF5288TAX is available at Aetrix Electronics and suitable for engine control units, transmission control modules, body control modules, and electric power steering systems requiring stable component supply across extended automotive product lifecycles.
Supply support for STM8AF5288TAX 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 management ICs, sensors, and automotive-grade silicon for industrial and transportation markets.
The STM8AF series targets automotive powertrain and chassis applications with AEC-Q100 Grade 0 qualification, extended temperature operation, and integrated CAN/LIN peripherals to simplify ECU design and reduce system-level validation effort.
FAQ
What is the maximum operating temperature rating for STM8AF5288TAX?
The STM8AF5288TAX is qualified per AEC-Q100 Grade 0 with guaranteed operation from −40 °C to +150 °C ambient temperature. This rating is validated through accelerated life testing and thermal cycling per JEDEC JESD22-A104, enabling direct placement on high-temperature engine components without heatsinking.
Does STM8AF5288TAX support hardware-based LIN bus communication?
Yes, the device integrates a dedicated LINUART peripheral compliant with LIN 2.2 specification. It supports both master and slave modes with automatic baud rate resynchronization, header detection, and checksum verification - all implemented in hardware without CPU intervention during frame transmission or reception.
How many CAN message objects does the beCAN controller support?
The beCAN controller provides 16 message objects with individual acceptance filtering, transmit/receive FIFO buffering, and automatic retransmission on error. Each object supports standard (11-bit) or extended (29-bit) identifier formats and configurable data length up to 8 bytes.
Is the 2 Kbyte data EEPROM accessible during program execution?
Yes, the 2 Kbyte true data EEPROM supports concurrent read-while-write operation: while one sector is being programmed or erased, other sectors remain fully readable. This enables real-time logging of diagnostic data without halting application code execution.
STM8AF5288TAX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8A
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8A
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- CANbus, 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:
STM8AF5288TAX FAQ
1.How can I place an order for STM8AF5288TAX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF5288TAX 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 STM8AF5288TAX reliable?
The price and inventory of STM8AF5288TAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF5288TAX is usually 5 days.
3.What payment methods are accepted for STM8AF5288TAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF5288TAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF5288TAX?
STM8AF5288TAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF5288TAX 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 STM8AF5288TAX?
For technical support, including STM8AF5288TAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF5288TAX requirements.
6.How does Aetrix verify that STM8AF5288TAX is sourced from the original manufacturer or authorized distributors?
All STM8AF5288TAX 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 STM8AF5288TAX meets industry standards.
7.What is the process for return or replacement of STM8AF5288TAX?
All STM8AF5288TAX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF5288TAX, 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 STM8AF5288TAX part is unused and in its original packaging.
Return procedure for STM8AF5288TAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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