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STMicroelectronics STM8AF6288TCY
- Part No.:
- STM8AF6288TCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AF6288TCY.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
STM8AF6288TCY 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 STM8AF6288TCY datasheet, STM8AF6288TCY pinout, STM8AF6288TCY application, or STM8AF6288TCY equivalent, this page delivers verified technical context, automotive-grade timing and power specifications, validated pin-level I/O roles, and direct-fit alternatives for ECU redesign and supply continuity planning.
Technical Context
The STM8AF6288TCY implements a Harvard-architecture STM8A CPU with 3-stage pipeline and 1.6 cycles/instruction average, achieving 10 MIPS at 16 MHz; its clock system integrates trimmable 16 MHz HSI and 128 kHz LSI oscillators plus external crystal support up to 24 MHz with clock security monitoring.
It features a dedicated beCAN controller compliant with ISO 11898-1, supporting both standard and extended frames; analog subsystem includes a 10-bit ADC with ±2 LSB total unadjusted error and up to 16 multiplexed input channels, all rated for operation from −40 °C to +150 °C ambient.
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 - ensures long-term firmware integrity in under-hood environments. |
| Data EEPROM | 2 Kbyte true data EEPROM, 300 kcycle endurance - provides robust nonvolatile storage for calibration parameters and fault logs. |
| CAN Interface | High-speed CAN 2.0B compliant, 1 Mbit/s - meets automotive network requirements for powertrain and chassis communication. |
| ADC Resolution | 10-bit SAR ADC with ±2 LSB TUE and 1 LSB linearity - delivers accurate engine temperature and pressure measurement without external calibration. |
| Operating Temp | −40 °C to +150 °C ambient - qualified per AEC-Q100 Grade 0 for direct placement in high-temperature engine compartments. |
| Supply Voltage | 3.0 V to 5.5 V - compatible with 5 V automotive battery systems and tolerant of load-dump transients when paired with external protection. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; 64-pin quad flat configuration optimized for automotive PCB layout and thermal dissipation in constrained ECU modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD pins (pins 1, 64) and multiple VSS pins (pins 2, 3, 63) ensure low-impedance power delivery and noise immunity in noisy automotive environments. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2–5.5 V logic levels and supports external watchdog or power-on reset coordination. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7 | General-purpose I/O ports | Up to 68 user pins including 11 high-sink I/Os (20 mA sink capability); each port supports alternate functions including CAN_TX/RX, USART, SPI, I²C, and ADC inputs. |
| CAN_RX / CAN_TX | CAN physical layer interface | Dedicated differential pair (pins 43, 44 on LQFP64) with internal termination and slew-rate control for EMC-compliant bus coupling. |
| OSC_IN / OSC_OUT | External crystal oscillator connection | Supports 4–24 MHz quartz crystals; internal load capacitors configurable via option bytes - eliminates need for external caps in cost-sensitive designs. |
| SWIM | Single-wire debug interface | Pin 13 (PA1) serves as bidirectional SWIM for programming and real-time debugging without halting CPU operation. |
Key Features
| Feature | Design Value |
|---|---|
| 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 drive in electric power steering. |
| Embedded LINUART | LIN 2.2-compliant master/slave mode with automatic resynchronization - supports body electronics communication without external LIN transceiver. |
| Low-power modes | Wait, Auto-wakeup, Halt, and Active-halt modes with selective peripheral clock gating - reduces current draw to ≤1.5 µA in Halt mode with RTC active. |
| Robust I/O design | I/Os immune to current injection up to 100 mA - prevents latch-up during ESD events or cable shorting in vehicle harnesses. |
| Memory protection | Read-out protection (ROP), write protection (WP), and user boot code (UBC) locking - enforces firmware IP security and bootloader integrity in production ECUs. |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
|
Use Scenario: Real-time acquisition of crankshaft position, throttle angle, 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 response and synchronized PWM output for injector drivers. Use Value: Integrated 10-bit ADC with hardware oversampling and CAN 2.0B enable direct sensor-to-bus data flow without external signal conditioning or protocol translation ICs. |
Use Scenario: Monitoring gear selector position, turbine speed, and hydraulic pressure; managing solenoid valve sequencing and clutch engagement timing. IC Role / Device Role / Timing Role: Safety-relevant controller running ISO 26262 ASIL-B software partitioning, using window watchdog and memory ECC for fault detection. Use Value: AEC-Q100 Grade 0 qualification and 150 °C operation allow direct mounting on transmission housing, eliminating remote mounting and interconnect losses. |
| Electric Power Steering (EPS) | Body Control Module (BCM) |
|
Use Scenario: Sampling torque sensor and motor phase currents; generating space-vector PWM for 3-phase brushless assist motor. IC Role / Device Role / Timing Role: Motor control MCU coordinating TIM1 advanced timer outputs with ADC-triggered sampling for field-oriented control (FOC). Use Value: Complementary PWM outputs with hardware-inserted dead-time prevent shoot-through in inverter bridges, reducing MOSFET failure risk. |
Use Scenario: Managing door lock actuators, interior lighting dimming, window lift motors, and LIN-connected mirror controls. IC Role / Device Role / Timing Role: Central body electronics controller interfacing with LIN slaves via integrated LINUART and driving high-current loads via GPIO with 20 mA sink capability. Use Value: Single-chip LIN master capability eliminates discrete transceiver, reducing BOM count and PCB area in space-constrained pillar modules. |
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 |
|---|---|---|---|
| STM8AF6269TCY | 64 Kbyte Flash, no CAN interface, same LQFP64 package and peripheral set except beCAN block omitted. | Suitable for non-networked body modules where LIN-only communication suffices and CAN bandwidth is unnecessary. | Select when CAN is not required and cost reduction via smaller Flash is prioritized without changing PCB layout. |
| Infineon XC800CNL-16FF | 8-bit CISC core, 16 Kbyte Flash, LIN-only (no CAN), 10-bit ADC, operates to 125 °C (not Grade 0). | Targeted at lower-tier BCMs with less stringent thermal and functional safety requirements. | Choose only for non-safety-critical, ambient-temperature-limited applications where ST's 150 °C rating and CAN are not needed. |
Compared with STM8AF6269TCY, the STM8AF6288TCY adds 64 Kbyte Flash and full CAN 2.0B - essential for powertrain integration; versus XC800CNL-16FF, it delivers higher temperature rating, larger memory, and dual-bus (CAN+LIN) capability critical for modern E/E architectures.
Availability
STM8AF6288TCY 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 STM8AF6288TCY 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 STM8A automotive MCU product line targets cost-sensitive, high-reliability embedded control applications - specifically engineered for under-hood and chassis systems demanding AEC-Q100 qualification, extended temperature operation, and integrated communication peripherals.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for STM8AF6288TCY?
The STM8AF6288TCY achieves a maximum CPU frequency of 24 MHz within a supply voltage range of 3.0 V to 5.5 V. At 5.5 V, full 24 MHz operation is guaranteed; at 3.0 V, maximum fCPU is limited to 16 MHz per electrical characteristics table (Section 10.3.1). This voltage-frequency scaling ensures reliable timing margin across automotive battery fluctuations.
Does STM8AF6288TCY support hardware-based memory protection for secure firmware updates?
Yes. The device implements three hardware-enforced memory protection mechanisms: Read-Out Protection (ROP) to prevent unauthorized Flash dump, Write Protection (WP) zones configurable per 1-Kbyte sector, and User Boot Code (UBC) locking to safeguard bootloader integrity. These are controlled via dedicated option bytes and require SWIM access to modify.
Can the integrated LINUART operate as both master and slave without external components?
Yes. The LINUART module supports full LIN 2.2 compliance in both master and slave modes, including automatic resynchronization and header/checksum generation. It drives the LIN bus directly via a single GPIO pin configured as open-drain output - no external transceiver required for basic node functionality.
What thermal package metrics are specified for the LQFP64 variant of STM8AF6288TCY?
The LQFP64 package (10 × 10 mm) has a junction-to-ambient thermal resistance (RθJA) of 40 °C/W under standard JEDEC 2-layer board conditions, and junction-to-case (RθJC) of 15 °C/W. Its exposed thermal pad must be soldered to a minimum 200 mm² copper pour for sustained 150 °C operation - verified per Table 54 and Section 11.2 of the datasheet.
STM8AF6288TCY 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:
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6288TCY FAQ
1.How can I place an order for STM8AF6288TCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6288TCY 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 STM8AF6288TCY reliable?
The price and inventory of STM8AF6288TCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6288TCY is usually 5 days.
3.What payment methods are accepted for STM8AF6288TCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6288TCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6288TCY?
STM8AF6288TCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6288TCY 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 STM8AF6288TCY?
For technical support, including STM8AF6288TCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6288TCY requirements.
6.How does Aetrix verify that STM8AF6288TCY is sourced from the original manufacturer or authorized distributors?
All STM8AF6288TCY 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 STM8AF6288TCY meets industry standards.
7.What is the process for return or replacement of STM8AF6288TCY?
All STM8AF6288TCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6288TCY, 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 STM8AF6288TCY part is unused and in its original packaging.
Return procedure for STM8AF6288TCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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