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STMicroelectronics STM8AF5288TAY
- Part No.:
- STM8AF5288TAY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AF5288TAY.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:968
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Product details
Overview
STM8AF5288TAY 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 STM8AF5288TAY datasheet, STM8AF5288TAY pinout, STM8AF5288TAY application, or STM8AF5288TAY equivalent, key selection criteria include CAN bus timing compliance, 150 °C ambient operation capability, LIN 2.2 master/slave support, and high-sink I/O robustness against current injection in under-hood environments.
Technical Context
The device implements a Harvard-architecture STM8A CPU with 3-stage pipeline and average 1.6 cycles/instruction throughput, enabling 10 MIPS at 16 MHz. It integrates dual clock security systems: one monitoring the external crystal oscillator (HSE) and another validating internal RC sources (HSI/LSI).
Its analog subsystem includes a 10-bit ADC with ±2 LSB total unadjusted error (TUE), 1 LSB linearity, and up to 16 multiplexed input channels - synchronized via programmable trigger sources including TIM1, TIM2, and external events - while its advanced control timer (TIM1) delivers 3 complementary PWM outputs with configurable dead-time insertion for motor gate driving.
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 at VDD = 3–5.5 V; supports real-time control loops with sub-μs instruction timing across full temperature range (−40 to +150 °C). |
| Flash Memory | 128 Kbyte on-chip Flash with 20-year data retention at 55 °C; supports in-application programming (IAP) and read-out protection (ROP) for secure firmware updates. |
| Data EEPROM | 2 Kbyte true data EEPROM with 300 kcycle endurance; eliminates need for external nonvolatile storage in parameter logging and calibration storage. |
| CAN Interface | CAN 2.0B compliant controller with 1 Mbit/s baud rate; includes message filtering, automatic retransmission, and bus-off recovery for robust vehicle network communication. |
| ADC Resolution | 10-bit SAR ADC with ±2 LSB TUE and 1 LSB integral linearity; provides accurate voltage measurement of throttle position, coolant temperature, and battery sensing inputs. |
| Operating Temperature | −40 °C to +150 °C ambient; qualified per AEC-Q100 Grade 0, enabling direct placement in high-heat zones like powertrain compartments. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch) with 64 pins; thermally enhanced for sustained operation at 150 °C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure low-impedance power delivery and noise immunity for mixed-signal operation across full temperature range. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7 | General-purpose I/O ports | Up to 68 user-configurable pins; 11 support high-sink capability (up to 20 mA) for direct LED or solenoid drive without external buffers. |
| PD0/PD1 | CAN_H/CAN_L | Dedicated differential CAN transceiver interface pins; internally terminated and ESD-hardened to ISO 11898-2 requirements. |
| PA3/PA4 | LIN_TX/LIN_RX | Hardware LINUART supporting LIN 2.2 master/slave modes with automatic resynchronization; eliminates software bit-banging overhead. |
| PC0/PC1 | USART1_TX/USART1_RX | Full-duplex asynchronous serial interface with clock output option for synchronous slave mode - used for diagnostic bootloader communication. |
| PC6/PC7 | SPI1_NSS/SPI1_SCK | Master SPI interface pins supporting up to 10 Mbit/s; configured for flash memory or sensor peripheral interfacing with hardware chip select control. |
| PH0/PH1 | I2C_SCL/I2C_SDA | Standard-mode (100 kbit/s) and fast-mode (400 kbit/s) I²C interface; includes slew-rate control and digital noise filtering for reliable EEPROM or sensor bus operation. |
| NRST | Active-low reset input | Reset pin with built-in Schmitt trigger and glitch filter; supports external reset supervision and low-power wake-up from Halt mode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for continuous operation at 150 °C ambient - meets stringent reliability requirements for engine control, transmission, and braking systems. |
| Integrated CAN 2.0B controller | Hardware-accelerated CAN protocol handling with 64-message object RAM, timestamping, and automatic bus-off recovery - reduces CPU load by >40% vs. software emulation. |
| True data EEPROM | 2 Kbyte on-chip EEPROM with guaranteed 300 kwrite cycles and 20-year data retention at 55 °C - enables field-updatable calibration tables without external memory. |
| Advanced control timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion - supports 3-phase motor control with hardware fault protection. |
| Low-power clock management | Independent 16 MHz HSI (user-trimmable ±1%) and 128 kHz LSI oscillators; clock security system monitors both sources and triggers safe reset on failure. |
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 task scheduling via nested interrupt controller (32 vectors). Use Value: On-chip 10-bit ADC with hardware-triggered sampling and CAN 2.0B messaging ensures <500 ns jitter in spark timing commands and synchronized sensor fusion across multiple ECUs. |
Use Scenario: Monitoring gear selector position, turbine speed, and hydraulic pressure; managing solenoid valve sequencing and torque converter lock-up. IC Role / Device Role / Timing Role: Safety-critical controller interfacing with LIN slaves (e.g., shift-by-wire actuators) and communicating status via CAN to body domain controllers. Use Value: LINUART hardware support with automatic resynchronization tolerates ±15% baud rate drift across temperature - eliminating retraining delays during cold starts. |
| Electric Power Steering (EPS) | Brake Control Module (BCM) |
|
Use Scenario: Sampling torque sensor, motor current, and steering angle; generating PWM gate signals for 3-phase brushless assist motor. IC Role / Device Role / Timing Role: Motor control MCU using TIM1's complementary PWM outputs with dead-time insertion to prevent shoot-through in inverter stage. Use Value: Hardware dead-time control (programmable 1–1023 ns steps) and fault input (BKIN) enable fail-safe shutdown within 1.2 μs - meeting ISO 26262 ASIL-B timing constraints. |
Use Scenario: Processing wheel speed sensor pulses (ABS), brake pedal travel, and hydraulic pressure; coordinating actuator response across four wheels. IC Role / Device Role / Timing Role: Dual-CAN node managing high-priority ABS messages on CAN1 and diagnostics on CAN2 - with independent message RAM and filtering. Use Value: Two independent CAN controllers allow concurrent real-time braking arbitration and UDS diagnostic session handling without CPU contention or latency spikes. |
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 identical Flash/EEPROM/RAM, 150 °C rating, and LIN/USART/SPI/I²C peripherals. | Suitable for LIN-only body electronics (e.g., door modules, seat controls) where CAN is unnecessary. | Select when CAN bus integration is not required and cost reduction is prioritized without sacrificing thermal or memory specs. |
| SPC560B50L5 | 32-bit Power Architecture core, 64 MHz, 512 Kbyte Flash, dual CAN FD, but requires external EEPROM and operates up to 125 °C. | Targets higher-complexity ASIL-B systems requiring larger code footprint and CAN FD bandwidth. | Choose only if migrating to 32-bit architecture, needing CAN FD, or requiring >128 Kbyte Flash - not a drop-in replacement. |
Compared with STM8AF6288TAY, the STM8AF5288TAY adds essential CAN 2.0B for powertrain networking at no thermal or memory penalty; versus SPC560B50L5, it offers lower BOM cost and simpler toolchain for legacy 8-bit automotive designs requiring Grade 0 qualification.
Availability
STM8AF5288TAY is available at Aetrix Electronics and suitable for engine control units, transmission control modules, electric power steering systems, and brake control modules requiring stable component supply across extended automotive lifecycles.
Supply support for STM8AF5288TAY 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 series is part of ST's automotive-grade 8-bit MCU portfolio, engineered specifically for cost-sensitive, thermally demanding applications such as powertrain, chassis, and body electronics where AEC-Q100 Grade 0 reliability is mandatory.
FAQ
What is the maximum ambient temperature rating for STM8AF5288TAY?
The STM8AF5288TAY 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 standards, enabling direct mounting in high-heat engine bay locations without derating.
Does STM8AF5288TAY support in-system programming (ISP) via CAN?
Yes - STM8AF5288TAY supports CAN-based bootloader programming using ST's standard CAN ISP protocol (UNI/O-compatible). The device must be configured with option byte BOOT1=1 and use predefined CAN identifiers (0x7DF for request, 0x7E8 for response) with SAE J2411 physical layer compatibility.
How many CAN message objects does the on-chip CAN controller support?
The integrated beCAN controller supports 64 message objects stored in dedicated RAM, each configurable for transmit/receive, identifier masking, and priority arbitration. Message filtering is performed in hardware using acceptance masks and ID lists, reducing CPU overhead during high-bandwidth CAN traffic.
Is the 2 Kbyte data EEPROM accessible during program execution?
Yes - the 2 Kbyte true data EEPROM supports simultaneous read-while-write (RWW) operation: code execution continues from Flash while EEPROM pages are being erased or programmed. This enables seamless calibration updates without halting control loops or requiring external memory buffering.
STM8AF5288TAY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8A
- Packaging:
- Tray
- 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:
STM8AF5288TAY FAQ
1.How can I place an order for STM8AF5288TAY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF5288TAY 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 STM8AF5288TAY reliable?
The price and inventory of STM8AF5288TAY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF5288TAY is usually 5 days.
3.What payment methods are accepted for STM8AF5288TAY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF5288TAY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF5288TAY?
STM8AF5288TAY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF5288TAY 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 STM8AF5288TAY?
For technical support, including STM8AF5288TAY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF5288TAY requirements.
6.How does Aetrix verify that STM8AF5288TAY is sourced from the original manufacturer or authorized distributors?
All STM8AF5288TAY 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 STM8AF5288TAY meets industry standards.
7.What is the process for return or replacement of STM8AF5288TAY?
All STM8AF5288TAY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF5288TAY, 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 STM8AF5288TAY part is unused and in its original packaging.
Return procedure for STM8AF5288TAY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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