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STMicroelectronics STM8AF6288TCX
- Part No.:
- STM8AF6288TCX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AF6288TCX.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,857
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Product details
Overview
STM8AF6288TCX 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 STM8AF6288TCX datasheet, STM8AF6288TCX pinout, STM8AF6288TCX application, or STM8AF6288TCX 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 STM8AF6288TCX 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 analog subsystem includes a 10-bit ADC with ±2 LSB total unadjusted error and 1 LSB linearity across up to 16 multiplexed channels. Communication peripherals include high-speed CAN 2.0B, LINUART compliant with LIN 2.2, 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.
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 routines. |
| Max fCPU | 24 MHz; supports real-time response in engine management systems with <100 ns instruction latency. |
| Flash Memory | 128 Kbyte Flash with 20-year data retention at 55 °C; sufficient for full ECU firmware + calibration tables. |
| Data EEPROM | 2 Kbyte true data EEPROM, 300 kcycle endurance; stores wear-sensitive parameters like mileage or adaptive learning values. |
| CAN Interface | CAN 2.0B compliant, 1 Mbit/s operation; meets ISO 11898-2 for robust in-vehicle networking under EMI stress. |
| ADC Resolution | 10-bit SAR ADC with ±2 LSB TUE and 1 LSB linearity; delivers accurate throttle position or coolant temperature measurement. |
| Operating Temp | −40 °C to +150 °C ambient; qualified for under-hood deployment without derating or heatsinking. |
| Supply Voltage | 3.0 V to 5.5 V; compatible with automotive battery transients and wide-range DC-DC converters. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Dual VDD pins (Pins 1, 64) and multiple VSS (Pins 2, 3, 63) ensure low-impedance power delivery for noise-immune CAN/ADC operation. |
| PB0–PB7 | General-purpose I/O | 8-bit port with high-sink capability (20 mA); used for driving solenoids or reading discrete switches in transmission control. |
| PA0–PA7 | Analog input / Digital I/O | Configurable as ADC1_IN0–IN7; supports simultaneous sampling of 8 engine sensors via hardware trigger synchronization. |
| PD0, PD1 | CAN_H, CAN_L | Dedicated differential CAN transceiver interface pins; internally terminated and ESD-hardened per ISO 11898-2 requirements. |
| PC0–PC7 | SPI/I²C/USART alternate function | Multi-function port supporting LINUART master mode, SPI flash programming, and I²C EEPROM communication on shared pins. |
| NRST | Active-low reset | Debounced internal reset generator with programmable timeout; immune to 100 ns glitches during cranking transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +150 °C operation with lifetime reliability testing per automotive stress standards. |
| Embedded clock security system (CSS) | Monitors HSE oscillator failure and triggers safe state entry within 4 µs - critical for fail-operational engine control. |
| Low-power modes with clock gating | Wait/Halt modes reduce current to <1 µA; enables always-on LIN wake-up while preserving RAM content. |
| True data EEPROM | 2 Kbyte nonvolatile memory with 300 kcycle endurance and automatic wear leveling - eliminates need for external EEPROM. |
| High-sink I/O capability | 11 pins rated for 20 mA sink; directly drives fuel injectors or relays without external drivers in cost-sensitive 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 timing calculation. IC Role / Device Role / Timing Role: Primary MCU executing control algorithms with sub-millisecond loop timing; CAN handles diagnostic and torque coordination messages. Use Value: 128 Kbyte Flash stores full control map + OBD-II diagnostics; 10-bit ADC ensures <±1% air-fuel ratio accuracy under thermal stress. |
Use Scenario: Gear selection logic based on vehicle speed, brake status, and driver demand; PWM control of shift solenoids and clutch actuators. IC Role / Device Role / Timing Role: Real-time actuator coordinator with deterministic timer-triggered PWM outputs and LIN slave interface for dashboard feedback. Use Value: High-sink I/O drives solenoids directly; CAN bus synchronizes shift events with engine torque reduction commands. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC fan speed using LIN sub-nodes. IC Role / Device Role / Timing Role: LIN master coordinating up to 16 slave nodes; CAN gateway relaying alerts to instrument cluster. Use Value: LINUART supports automatic resynchronization per LIN 2.2; 2 Kbyte EEPROM stores user preferences persistently. |
Use Scenario: Torque assist computation using steering angle, vehicle speed, and motor current feedback; safety monitoring of motor phase currents. IC Role / Device Role / Timing Role: Safety-critical controller with watchdog supervision and independent ADC sampling of dual shunt resistors. Use Value: AEC-Q100 Grade 0 rating ensures operation at 150 °C near motor housing; advanced timer enables precise 3-phase FOC timing. |
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 |
|---|---|---|---|
| STM8AF6269TCX | 64 Kbyte Flash, no CAN interface; identical core, timers, ADC, and I/O structure. | Limited to LIN-only or UART-based networks; unsuitable for CAN-required powertrain modules. | Select when CAN is unnecessary and BOM cost reduction is prioritized over future network scalability. |
| Infineon XC800CNL-16F | 8-bit CISC core, 16 Kbyte Flash, CAN 2.0A only (500 kbit/s max), 8-channel 10-bit ADC. | Lower memory and CAN bandwidth; certified for AEC-Q100 Grade 1 (−40 °C to +125 °C). | Choose only for non-critical body electronics where extended temperature range and high-speed CAN are not required. |
Compared with STM8AF6269TCX, the STM8AF6288TCX adds 64 Kbyte Flash and full CAN 2.0B - enabling complex ECU firmware and high-bandwidth vehicle networking. Versus XC800CNL-16F, it delivers 2× Flash, Grade 0 thermal margin, and 2× CAN speed - essential for modern powertrain integration.
Availability
STM8AF6288TCX 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 automotive production lifecycles.
Supply support for STM8AF6288TCX 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 STM8A automotive MCU product line targets cost-sensitive, high-reliability embedded control applications - specifically engineered for engine management, chassis systems, and body electronics with AEC-Q100 qualification and extended temperature resilience.
FAQ
What is the maximum operating junction temperature for STM8AF6288TCX?
The device is qualified per AEC-Q100 Grade 0 with guaranteed operation from −40 °C to +150 °C ambient temperature. Its thermal resistance θJA is 35 °C/W in LQFP64 package, allowing sustained 150 °C junction temperature under typical PCB copper pour conditions - validated for under-hood placement without forced cooling.
Does STM8AF6288TCX support bootloader updates over CAN?
Yes. The device includes a factory-programmed ROM-based bootloader accessible via CAN using ISO 15765-2 (CAN TP) protocol. It supports reprogramming of Flash memory without external debug hardware, with checksum verification and secure option byte protection against unauthorized access.
How many CAN message objects does the on-chip beCAN peripheral support?
The beCAN module supports 16 message objects with configurable acceptance filtering, including 2 dedicated transmit buffers and 14 receive buffers. Each object includes identifier masking, data length control, and priority arbitration - sufficient for handling standard OBD-II PIDs and proprietary ECU-to-ECU messaging in compact powertrain networks.
Is the 2 Kbyte data EEPROM implemented as separate physical memory or emulated in Flash?
It is true hardware EEPROM - a dedicated silicon block with independent write/erase circuitry, rated for 300,000 write/erase cycles and 20-year data retention at 55 °C. Unlike Flash-emulated EEPROM, it supports byte-level writes without block erasure and operates across full temperature range without refresh overhead.
STM8AF6288TCX 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:
- 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:
STM8AF6288TCX FAQ
1.How can I place an order for STM8AF6288TCX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6288TCX 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 STM8AF6288TCX reliable?
The price and inventory of STM8AF6288TCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6288TCX is usually 5 days.
3.What payment methods are accepted for STM8AF6288TCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6288TCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6288TCX?
STM8AF6288TCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6288TCX 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 STM8AF6288TCX?
For technical support, including STM8AF6288TCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6288TCX requirements.
6.How does Aetrix verify that STM8AF6288TCX is sourced from the original manufacturer or authorized distributors?
All STM8AF6288TCX 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 STM8AF6288TCX meets industry standards.
7.What is the process for return or replacement of STM8AF6288TCX?
All STM8AF6288TCX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6288TCX, 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 STM8AF6288TCX part is unused and in its original packaging.
Return procedure for STM8AF6288TCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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