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STMicroelectronics STM8AF62A9TDY
- Part No.:
- STM8AF62A9TDY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM8AF62A9TDY.pdf
- Description:
- IC MCU 8BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,797
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Product details
Overview
STM8AF62A9TDY from STMicroelectronics is an AEC-Q100 Grade 0 qualified automotive 8-bit microcontroller featuring a 24 MHz STM8A core, 128 Kbyte Flash program memory, 2 Kbyte data EEPROM, 10-bit ADC with 16-channel multiplexing, CAN 2.0B interface, and operation up to 150 °C ambient temperature - deployed in engine control units and battery management systems.
For engineers reviewing the STM8AF62A9TDY datasheet, STM8AF62A9TDY pinout, STM8AF62A9TDY application, or STM8AF62A9TDY equivalent, this page delivers verified technical context, validated pin functions, automotive-grade timing and communication specifications, and real-world substitution guidance for CAN-enabled MCU selection.
Technical Context
The STM8AF62A9TDY implements a Harvard-architecture STM8A CPU with 3-stage pipeline and 1.6 cycles/instruction average, delivering 10 MIPS at 16 MHz. It integrates dual clock domains: a user-trimmable 16 MHz RC oscillator and a 128 kHz low-power RC oscillator, both monitored by a clock security system (CSS) with automatic failover to safe mode.
Its peripheral set includes a high-speed CAN 2.0B controller (1 Mbit/s), LINUART compliant with LIN 2.2 (master/slave with auto-resynchronization), and three independent timers - two 16-bit general-purpose timers with CAPCOM channels and one advanced control timer with dead-time insertion and complementary outputs - all synchronized via flexible trigger routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard core 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-42 ns instruction cycle time. |
| Flash Memory | 128 Kbyte on-chip Flash with 20-year data retention at 55 °C; supports field firmware updates and secure boot partitioning. |
| Data EEPROM | 2 Kbyte true data EEPROM with 300 kcycle endurance; retains calibration data and fault logs across vehicle lifetime. |
| CAN Interface | High-speed CAN 2.0B compliant (1 Mbit/s); integrated message RAM and filtering for robust ECU-to-ECU communication in harsh environments. |
| ADC Resolution | 10-bit SAR ADC with ±2 LSB total unadjusted error (TUE) and 1 LSB linearity; suitable for precise sensor signal acquisition (e.g., throttle position, coolant temp). |
| Operating Temp | −40 °C to +150 °C ambient; qualified per AEC-Q100 Grade 0, enabling under-hood deployment without external thermal derating. |
| I/O Count | 68 user I/O pins (11 high-sink capable); designed for current injection immunity per ISO 10605, critical for automotive board-level reliability. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad for enhanced heat dissipation in high-temperature automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domain: VDD powers digital logic and I/Os; VSS provides reference return path with dedicated analog ground pins for ADC noise isolation. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7, PG0–PG7, PH0–PH7 | General-purpose bidirectional I/O | 68 configurable GPIOs with programmable pull-up/pull-down, slew rate control, and Schmitt-trigger input; 11 support 20 mA sink for direct LED/relay drive. |
| PD0/PD1 | CAN TX/RX | Dedicated differential CAN transceiver interface pins; electrically hardened for ±8 kV ESD and transient immunity per ISO 7637-2. |
| PA3/PA4 | USART1 TX/RX | Full-duplex asynchronous serial interface supporting LIN master mode and synchronous clock output for sensor synchronization. |
| PC0/PC1 | SPI1 SCK/MOSI | Master clock and data output lines for high-speed (10 Mbit/s) communication with external flash, sensors, or display drivers. |
| PC2/PC3 | I2C1 SCL/SDA | Open-drain bidirectional bus interface supporting 400 Kbit/s fast-mode; includes glitch filtering and timeout detection for robust slave communication. |
| PF0–PF3 | ADC IN0–IN3 | Analog input channels with internal sampling capacitor and programmable gain stage; routed directly to 10-bit ADC with hardware oversampling capability. |
| NRST | Active-low reset input | Asynchronous reset pin with internal pull-up and debouncing circuitry; accepts external watchdog or power-monitor reset signals. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +150 °C operation with full electrical test coverage, enabling use in engine compartments and transmission control units. |
| Integrated CAN 2.0B controller | On-die CAN protocol engine with 32-message object RAM, acceptance filtering, and automatic retransmission - eliminates need for external CAN controller IC. |
| True data EEPROM | 2 Kbyte nonvolatile memory with guaranteed 300,000 write/erase cycles and 20-year data retention at 55 °C - replaces external serial EEPROM in BMS and ADAS modules. |
| 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 without external logic. |
| Low-power modes with clock gating | Wait, Auto-wakeup, Halt, and Active-halt modes with per-peripheral clock enable/disable control - reduces system standby current to <1.5 µA at 25 °C. |
| LIN 2.2-compliant UART | Hardware LIN frame generation, checksum calculation, and automatic resynchronization - supports slave node wake-up and diagnostic communication in body electronics networks. |
Applications
| Engine Control Unit (ECU) | Electric Power Steering (EPS) |
|---|---|
|
Use Scenario: Real-time monitoring of crankshaft position, throttle angle, and oxygen sensor feedback to compute fuel injection timing and spark advance. IC Role / Device Role / Timing Role: Primary control MCU executing closed-loop PID algorithms at 10 kHz update rate with deterministic interrupt response under CAN bus load. Use Value: 24 MHz fCPU and 10-bit ADC with 16-channel scan ensure sub-millisecond sensor sampling and actuator command latency required for emissions compliance. |
Use Scenario: Torque assist calculation using steering torque sensor, vehicle speed, and motor position feedback in 12 V EPS systems. IC Role / Device Role / Timing Role: Motor control MCU managing PWM generation, current sensing, and CAN-based communication with vehicle stability control module. Use Value: Advanced control timer (TIM1) with dead-time insertion and complementary outputs enables safe, glitch-free 3-phase inverter gate driving at 20 kHz switching frequency. |
| Battery Management System (BMS) | Body Control Module (BCM) |
|
Use Scenario: Cell voltage monitoring, state-of-charge estimation, and thermal protection for 12 V lead-acid or 48 V Li-ion starter batteries. IC Role / Device Role / Timing Role: Data acquisition and safety monitor MCU interfacing with analog front-end ICs via SPI and reporting faults over CAN bus. Use Value: 2 Kbyte data EEPROM stores calibrated cell offset values and fault history across 300 kcycles, eliminating external NVM and reducing BOM count. |
Use Scenario: Centralized control of lighting, door locks, window lifts, and HVAC actuators in premium vehicle platforms. IC Role / Device Role / Timing Role: LIN master node coordinating up to 16 slave nodes (e.g., mirror controls, seat modules) while maintaining CAN gateway functionality. Use Value: Integrated LINUART with automatic resynchronization tolerates bus timing drift across wide temperature ranges, ensuring reliable slave node commissioning and diagnostics. |
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 |
|---|---|---|---|
| STM8AF6269TDY | 64 Kbyte Flash, no CAN interface; identical package, clock system, and peripheral set except CAN block omission. | Suitable for LIN-only or SPI/I2C-centric body electronics where CAN is not required. | Select when CAN is unnecessary and cost reduction is prioritized without sacrificing thermal rating or EEPROM capacity. |
| Infineon XC800CN-16F064L | 8-bit CISC core, 64 Kbyte Flash, CAN 2.0B, but only 1 Kbyte EEPROM and no LINUART; operates to 125 °C (Grade 1). | Limited to less demanding under-hood applications due to lower temperature grade and reduced nonvolatile storage. | Consider only if existing toolchain compatibility with XC800 architecture outweighs need for 150 °C operation and 2 Kbyte EEPROM. |
Compared with STM8AF6269TDY, the STM8AF62A9TDY adds 64 Kbyte Flash and integrated CAN - essential for complex ECU firmware and multi-node networking - while the XC800CN-16F064L lacks LIN support and thermal margin, limiting its use in next-generation 48 V systems.
Availability
STM8AF62A9TDY is available at Aetrix Electronics and suitable for engine control units, battery management systems, and electric power steering modules requiring stable component supply across extended automotive lifecycles.
Supply support for STM8AF62A9TDY 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 product line targets cost-sensitive, high-reliability automotive applications - specifically engineered for under-hood control, body electronics, and powertrain subsystems requiring AEC-Q100 qualification and extended temperature operation.
FAQ
What is the maximum operating temperature for STM8AF62A9TDY?
The STM8AF62A9TDY is qualified per AEC-Q100 Grade 0 with guaranteed operation from −40 °C to +150 °C ambient temperature. This rating is validated across all electrical parameters including Flash read/write, ADC accuracy, and CAN bit timing, making it suitable for direct mounting near engines or transmissions without heatsinking.
Does STM8AF62A9TDY support LIN communication natively?
Yes - the device integrates a LINUART peripheral compliant with LIN 2.2 specification, supporting both master and slave modes with hardware-assisted frame generation, checksum calculation, and automatic resynchronization. No external LIN transceiver or software protocol stack is required for basic node implementation.
How many CAN message objects does the on-chip CAN controller support?
The integrated beCAN controller provides 32 message objects in dedicated RAM, each configurable as transmit or receive with individual ID masking and filtering. This allows concurrent handling of multiple CAN IDs (e.g., engine speed, coolant temp, brake status) without CPU intervention during normal bus traffic.
Is there hardware support for Flash programming during runtime?
No - the STM8AF62A9TDY does not support true Read-While-Write (RWW) Flash execution. Flash programming requires entering a special wait state where CPU execution halts; however, the bootloader supports in-application programming via UART or CAN using ST's standard protocol, enabling field firmware updates without external programmers.
STM8AF62A9TDY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 52
- Program Memory Size:
- 128KB (128K 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 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF62A9TDY FAQ
1.How can I place an order for STM8AF62A9TDY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF62A9TDY 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 STM8AF62A9TDY reliable?
The price and inventory of STM8AF62A9TDY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF62A9TDY is usually 5 days.
3.What payment methods are accepted for STM8AF62A9TDY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF62A9TDY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF62A9TDY?
STM8AF62A9TDY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF62A9TDY 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 STM8AF62A9TDY?
For technical support, including STM8AF62A9TDY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF62A9TDY requirements.
6.How does Aetrix verify that STM8AF62A9TDY is sourced from the original manufacturer or authorized distributors?
All STM8AF62A9TDY 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 STM8AF62A9TDY meets industry standards.
7.What is the process for return or replacement of STM8AF62A9TDY?
All STM8AF62A9TDY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF62A9TDY, 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 STM8AF62A9TDY part is unused and in its original packaging.
Return procedure for STM8AF62A9TDY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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