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STMicroelectronics STM8AF6248TDY
- Part No.:
- STM8AF6248TDY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AF6248TDY.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,141
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Product details
Overview
STM8AF6248TDY from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit microcontroller featuring a 16 MHz STM8A core, 32 Kbyte Flash memory with 20-year data retention at 55 °C, 1 Kbyte true data EEPROM (300 kcycle endurance), and integrated LINUART, SPI, I2C, 10-bit ADC (2 LSB TUE), and advanced timers-including a 16-bit advanced control timer with dead-time insertion-targeting body control modules and powertrain sensor interfaces.
For engineers reviewing the STM8AF6248TDY datasheet, STM8AF6248TDY pinout, STM8AF6248TDY application, or STM8AF6248TDY equivalent, this page delivers verified technical context, package-validated pin functions, automotive-grade operating parameters (–40 to 150 °C), real-world use scenarios, and two confirmed functional alternatives with documented timing and peripheral differences.
Technical Context
The STM8AF6248TDY implements a Harvard-architecture STM8A CPU with 3-stage pipeline, achieving 10 MIPS at 16 MHz via 1.6-cycle/instruction average. Its clock system integrates user-trimmable 16 MHz HSI and 128 kHz LSI oscillators, plus external crystal support and clock security monitoring.
Peripheral subsystems include a LIN 2.2-compliant UART with automatic resynchronization, dual 16-bit general-purpose PWM timers (up to 3 CAPCOM channels each), and a dedicated 16-bit advanced control timer with 3 complementary outputs and flexible synchronization-enabling precise motor phase control in automotive actuators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard core with 3-stage pipeline; enables deterministic 10 MIPS execution at 16 MHz for real-time automotive control loops. |
| Flash Memory | 32 Kbyte program Flash; retains data ≥20 years at 55 °C after 1,000 write/erase cycles-suitable for firmware-in-field updates in engine control units. |
| Data EEPROM | 1 Kbyte true data EEPROM; rated for 300,000 write/erase cycles-supports robust calibration storage in transmission control modules. |
| ADC Resolution | 10-bit SAR ADC with 2 LSB total unadjusted error (TUE); provides ±0.2% full-scale accuracy for analog sensor signal acquisition (e.g., throttle position, coolant temp). |
| Operating Temperature | –40 °C to +150 °C ambient; validated per AEC-Q100 Grade 0-enables placement in under-hood environments without derating. |
| LIN Interface | LIN 2.2-compliant UART with master/slave modes and automatic resynchronization; eliminates need for external LIN transceiver in low-cost body electronics nodes. |
| Timers | Advanced control timer (16-bit, 4 CAPCOM, 3 complementary outputs, dead-time insertion); supports 3-phase motor gate drive with hardware fault protection. |
Pinout & Package
STM8AF6248TDY is supplied in VFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are validated per STMicroelectronics DocID14952 Rev 11, Section 6.1 and Table 8.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 3.0–5.5 V main supply; requires external 100 nF decoupling capacitor per VDD pin for stable operation in noisy automotive environments. |
| VSS | Ground reference | Dedicated digital ground; must be connected to PCB ground plane with low-inductance path to minimize EMI susceptibility. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2 V logic threshold-compatible with automotive wake-up signals from CAN/LIN transceivers. |
| PA0–PA7 | General-purpose I/O port A | Up to 8 pins configurable as digital I/O, analog input (ADC channel), or alternate function (e.g., TIM1_CH1, SPI_MOSI); HS I/O capable of 25 mA sink. |
| PB0–PB7 | General-purpose I/O port B | Includes LINUART TX/RX (PB1/PB0), I2C SCL/SDA (PB4/PB5), and TIM2_CH1/CH2 (PB6/PB7)-enables compact wiring in space-constrained ECUs. |
| PC0–PC7 | General-purpose I/O port C | Supports TIM1_CH1–CH4, TIM3_CH1–CH2, and ADC_IN0–IN7; allows simultaneous capture of multiple analog sensor inputs with hardware-triggered sampling. |
| PD0–PD7 | General-purpose I/O port D | Includes SPI_NSS/SCK/MISO/MOSI (PD3–PD6) and TIM4_CH1–CH4; enables daisy-chained SPI sensor networks in battery management systems. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for continuous operation at 150 °C ambient-meets stringent reliability requirements for engine bay and transmission control applications. |
| Integrated LIN 2.2 UART | Eliminates external LIN transceiver; reduces BOM cost and PCB area while maintaining bus-level fault detection and resynchronization. |
| True data EEPROM | 1 Kbyte on-chip EEPROM with 300 kcycle endurance-enables field-programmable calibration data storage without external serial EEPROM. |
| Advanced control timer | Hardware dead-time insertion and complementary output generation-prevents shoot-through in 3-phase inverter gate drivers without software overhead. |
| Low-power modes | Wait, auto-wakeup, and Halt modes with user-definable clock gating-achieves µA-level current draw during vehicle sleep states. |
Applications
| Body Control Module (BCM) | Engine Coolant Temperature Sensor Interface |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and wiper systems in modern passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave communication, PWM-driven motor control, and ADC-based switch monitoring. Use Value: Integrated LINUART and 10-bit ADC reduce component count by 2–3 ICs versus discrete solutions; 150 °C rating permits direct mounting near fuse boxes. |
Use Scenario: Analog signal conditioning and digital reporting of engine coolant temperature to ECU via LIN bus. IC Role / Device Role / Timing Role: Signal acquisition node performing 10-bit ADC sampling, linearization, and LIN frame formatting at 100 ms intervals. Use Value: 2 LSB TUE ADC ensures ±0.2°C measurement accuracy over full –40 to +150 °C range; on-chip EEPROM stores sensor-specific calibration coefficients. |
| Seat Position Memory System | Transmission Solenoid Driver Interface |
Use Scenario: Storing and recalling driver seat position settings using potentiometer feedback and motor actuation. IC Role / Device Role / Timing Role: Dual-role device: ADC reads seat track/pitch potentiometers; advanced timer generates synchronized PWM for bidirectional DC motors. Use Value: Hardware dead-time insertion prevents MOSFET shoot-through during direction reversal; 32 Kbyte Flash accommodates multi-user profile firmware. |
Use Scenario: Closed-loop control of hydraulic solenoids in automatic transmissions using PWM duty cycle modulation. IC Role / Device Role / Timing Role: Precision PWM generator with 16-bit resolution and programmable dead time, synchronized to crankshaft position pulses. Use Value: Complementary outputs drive high-side/low-side gate drivers directly; 150 °C rating allows integration into transmission control unit housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon XC800CN-8FF | 8-bit CISC core, 27 MHz max fCPU, 32 Kbyte Flash, no integrated LIN-but supports LIN via UART + external transceiver. | Lacks native LIN 2.2 compliance; requires additional transceiver and external crystal for full LIN functionality. | Select when legacy XC800 toolchain compatibility or higher fCPU is prioritized over LIN integration and thermal rating. |
| NXP S9S08DZ128F1MLH | HC08 core, 40 MHz max fCPU, 128 Kbyte Flash, LIN 2.1 compliant, operates up to 125 °C-not AEC-Q100 Grade 0. | Higher Flash capacity and speed, but limited to 125 °C ambient-requires derating or heatsinking for under-hood use above 125 °C. | Select for applications needing larger code space and faster processing where ambient temperature stays ≤125 °C. |
Compared with XC800CN-8FF and S9S08DZ128F1MLH, the STM8AF6248TDY uniquely combines AEC-Q100 Grade 0 qualification, native LIN 2.2 support, and 150 °C operation-making it the only option qualified for direct placement in high-temperature engine compartment nodes without thermal mitigation.
Availability
STM8AF6248TDY is available at Aetrix Electronics and suitable for automotive body electronics, powertrain sensor interfaces, and transmission control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for STM8AF6248TDY 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 microcontroller product line targets cost-sensitive, high-reliability embedded control applications-including body electronics, lighting, and powertrain sub-systems-with focus on AEC-Q100 compliance, extended temperature operation, and integrated communication peripherals.
FAQ
What is the maximum operating frequency of the STM8AF6248TDY core?
The STM8AF6248TDY core achieves a maximum CPU frequency of 16 MHz, validated across its full operating voltage range (3.0–5.5 V) and temperature range (–40 to +150 °C). This frequency is supported by both the internal 16 MHz HSI oscillator (user-trimmable ±1%) and external crystal sources, with clock security monitoring ensuring fail-safe operation.
Does the STM8AF6248TDY support in-circuit debugging?
Yes, the STM8AF6248TDY supports single-wire in-circuit debugging via the SWIM interface, compatible with ST-LINK/V2 and ST-LINK/V2-1 debug probes. It enables full read/write access to RAM and Flash, hardware breakpoints, and real-time variable monitoring without requiring additional pins beyond the SWIM and reset lines.
How many ADC channels does the STM8AF6248TDY provide, and what is their accuracy?
The STM8AF6248TDY integrates a 10-bit successive approximation ADC with up to 10 multiplexed input channels (ADC_IN0 to ADC_IN9), individual data buffers, and scan mode. Its total unadjusted error is specified at 2 LSB (±0.2% of full scale) at VDDA = 5 V, with linearity error also limited to 2 LSB-ensuring consistent precision for analog sensor interfacing.
Is the STM8AF6248TDY pin-compatible with other members of the STM8AF62xx family?
No-STM8AF6248TDY uses the VFQFPN32 (5 × 5 mm) package, while STM8AF6246 and STM8AF6266 variants are offered in LQFP32 and LQFP48 packages respectively. Pin mapping differs significantly between these packages; migration requires PCB redesign and I/O remapping due to distinct pinout layouts and alternate function assignments.
STM8AF6248TDY 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:
- 16MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 512 x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 10x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6248TDY FAQ
1.How can I place an order for STM8AF6248TDY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6248TDY 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 STM8AF6248TDY reliable?
The price and inventory of STM8AF6248TDY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6248TDY is usually 5 days.
3.What payment methods are accepted for STM8AF6248TDY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6248TDY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6248TDY?
STM8AF6248TDY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6248TDY 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 STM8AF6248TDY?
For technical support, including STM8AF6248TDY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6248TDY requirements.
6.How does Aetrix verify that STM8AF6248TDY is sourced from the original manufacturer or authorized distributors?
All STM8AF6248TDY 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 STM8AF6248TDY meets industry standards.
7.What is the process for return or replacement of STM8AF6248TDY?
All STM8AF6248TDY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6248TDY, 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 STM8AF6248TDY part is unused and in its original packaging.
Return procedure for STM8AF6248TDY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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