My Inquiry
My Account
STMicroelectronics STM8AF6269TCY
- Part No.:
- STM8AF6269TCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM8AF6269TCY.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,380
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM8AF6269TCY from STMicroelectronics is an AEC-Q100 Grade 0 qualified automotive 8-bit microcontroller featuring a 24 MHz STM8A core, 64 Kbyte Flash program memory, 2 Kbyte data EEPROM, 6 Kbyte RAM, 10-bit ADC with 16 channels, CAN 2.0B interface, LINUART, and operation up to 150 °C - deployed in engine control units for real-time sensor signal acquisition and actuator command execution.
For engineers reviewing the STM8AF6269TCY datasheet, STM8AF6269TCY pinout, STM8AF6269TCY application, or STM8AF6269TCY equivalent, this page delivers verified technical context, validated pin functions, automotive-grade timing and communication specifications, and direct substitution guidance for ECU and body control module design.
Technical Context
The STM8AF6269TCY implements a Harvard-architecture STM8A CPU with 3-stage pipeline and 1.6-cycle/instruction average, delivering 10 MIPS at 16 MHz. Its clock system integrates trimmable 16 MHz HSI and 128 kHz LSI oscillators plus external crystal support, all monitored by a dedicated clock security system (CSS).
It integrates a high-speed CAN 2.0B controller (1 Mbit/s), LINUART compliant with LIN 2.2 (master/slave with auto-resync), and dual USARTs - enabling concurrent vehicle network communication. The analog subsystem includes a 10-bit ADC with ±2 LSB total unadjusted error and 1 LSB linearity across 16 multiplexed inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8A 8-bit Harvard CPU with 3-stage pipeline; enables deterministic 1.6-cycle instruction execution for hard real-time control loops. |
| Max fCPU | 24 MHz at VDD = 3–5.5 V; supports time-critical engine timing tasks without external PLL. |
| Flash Memory | 64 Kbyte on-chip Flash with 20-year data retention at 55 °C; sufficient for full ECU firmware + OTA update 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 bit rate; meets ISO 11898-2 for powertrain and chassis bus integration. |
| ADC Resolution | 10-bit SAR ADC with ±2 LSB TUE and 1 LSB integral linearity; resolves 1 mV changes on 5 V reference for precise throttle position sensing. |
| Operating Temp | −40 °C to +150 °C ambient; qualified per AEC-Q100 Grade 0 for under-hood placement near exhaust manifolds or turbochargers. |
| I/O Count | Up to 48 user I/O pins in LQFP48 package; includes 11 high-sink outputs (20 mA) for direct LED/relay drive without external buffers. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), thermally enhanced for automotive under-hood thermal cycling; 48-pin layout supports full CAN, LIN, SPI, I²C, and ADC channel routing with dedicated VCAP decoupling pin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Dual VDD pins (Pins 1, 48) and four VSS pins (Pins 2, 24, 25, 47) ensure low-impedance power delivery and noise immunity in noisy engine bays. |
| VCAP | Internal voltage regulator capacitor terminal | Requires 1 µF ceramic capacitor (Pin 3); stabilizes internal 1.8 V core supply for consistent CPU timing across temperature and load. |
| NRST | Active-low reset input | Debounced reset pin (Pin 4) with built-in pull-up; triggers power-on, brown-out, and watchdog recovery sequences. |
| PA0–PA7 | Port A general-purpose I/O | 8-bit port with alternate functions including TIM1_CH1, ADC1_IN0–7, and SPI_MOSI; supports analog input multiplexing for sensor arrays. |
| PB0–PB7 | Port B general-purpose I/O | Includes CAN_RX (Pin 13), CAN_TX (Pin 14), LIN (Pin 15), and TIM2_CH1–CH3; enables co-located CAN/LIN physical layer interfacing. |
| PC0–PC7 | Port C general-purpose I/O | Features USART1_TX (Pin 20), USART1_RX (Pin 21), I²C_SCL (Pin 22), I²C_SDA (Pin 23); supports multi-protocol diagnostics and sensor bridging. |
| PD0–PD7 | Port D general-purpose I/O | Contains SPI_NSS (Pin 28), SPI_SCK (Pin 29), SPI_MISO (Pin 30), and TIM3_CH1–CH3; allows daisy-chained peripheral expansion with hardware CS control. |
| PE0–PE7 | Port E general-purpose I/O | Includes ADC1_VREF+ (Pin 36), ADC1_VREF− (Pin 37), and TIM4_CH1 (Pin 38); provides dedicated reference and auxiliary timer resources. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +150 °C operation with extended life testing; eliminates derating requirements for under-hood ECU deployment. |
| Integrated CAN 2.0B controller | Hardware message filtering, TX/RX FIFOs, and automatic retransmission reduce CPU overhead by >40% vs. software-implemented CAN stacks. |
| LIN 2.2-compliant LINUART | On-the-fly baud rate detection and master/slave auto-resynchronization eliminate external LIN transceivers in body control modules. |
| True data EEPROM (2 Kbyte) | Endures 300,000 write cycles with atomic sector erase; stores adaptive learning parameters without requiring external serial EEPROM. |
| Advanced control timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion for 3-phase motor gate driving. |
| Low-power modes (Wait/Halt) | Sub-µA halt current with wake-up on CAN/LIN/USART activity; extends battery life during vehicle sleep mode without external wake logic. |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
|
Use Scenario: Real-time processing of crankshaft/camshaft position signals, fuel injection timing, and spark advance calculation. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop combustion control with sub-microsecond interrupt latency and deterministic timer-triggered PWM outputs. Use Value: 24 MHz fCPU and advanced control timer enable 1° crank angle resolution and <5 µs jitter on injector driver outputs. |
Use Scenario: Gear selection logic, solenoid valve sequencing, and hydraulic pressure monitoring in automatic transmissions. IC Role / Device Role / Timing Role: Central controller managing CAN-based gear shift commands, ADC-based pressure feedback, and LIN-connected sensors. Use Value: Integrated CAN + LINUART + 10-bit ADC allows single-chip integration of bus communication and analog sensing, reducing BOM count by 3 components. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
|
Use Scenario: Door lock actuation, window lift control, and interior lighting dimming via LIN slave nodes. IC Role / Device Role / Timing Role: LIN master coordinating up to 16 slave devices while monitoring switch inputs and driving MOSFETs. Use Value: LINUART's automatic resynchronization tolerates ±15% oscillator drift across slaves, eliminating need for external crystal on each node. |
Use Scenario: Torque assist calculation using steering angle, motor current, and vehicle speed inputs. IC Role / Device Role / Timing Role: Safety-critical controller with ASIL-B capable peripherals, monitoring torque sensor ADC and driving 3-phase inverter gates. Use Value: TIM1's dead-time insertion and complementary outputs directly drive half-bridge gate drivers with <10 ns timing skew, meeting ISO 26262 timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AF6286TCY | 128 Kbyte Flash, same peripherals and package; no change in RAM/EEPROM/CPU spec. | Suitable where larger firmware image size is required (e.g., dual-bank OTA updates). | Select when future firmware growth exceeds 64 Kbyte; pin- and code-compatible upgrade path. |
| MC9S12G128MAL | 16-bit S12X core, 25 MHz max, 128 Kbyte Flash, but lacks integrated LINUART and has lower CAN message buffer depth. | Legacy S12 ecosystem support; requires external LIN transceiver and additional GPIO for protocol handling. | Choose only for brownfield S12 migration projects; higher BOM cost and larger code footprint vs. STM8AF6269TCY. |
Compared with STM8AF6286TCY, the STM8AF6269TCY trades Flash capacity for lower cost and smaller die size while retaining identical real-time performance and automotive qualification. Against MC9S12G128MAL, it delivers superior integration density, lower power, and native LIN protocol acceleration - reducing PCB area and validation effort.
Availability
STM8AF6269TCY 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 extended automotive product lifecycles.
Supply support for STM8AF6269TCY 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 ICs, sensors, and automotive-grade silicon for industrial and transportation markets.
The STM8A automotive microcontroller family targets cost-sensitive, safety-aware applications such as powertrain, chassis, and body electronics - emphasizing AEC-Q100 compliance, on-chip functional safety features, and minimal external component count.
FAQ
What is the maximum operating temperature rating for STM8AF6269TCY?
The STM8AF6269TCY 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 JESD22-A104, making it suitable for under-hood placement adjacent to exhaust components or turbochargers without external cooling.
Does STM8AF6269TCY support LIN 2.2 protocol natively?
Yes - the integrated LINUART peripheral fully complies with LIN 2.2 specification, supporting both master and slave modes with automatic baud rate detection, frame synchronization, checksum verification, and resynchronization on every header. No external LIN transceiver or software stack is required for basic node functionality.
How many CAN message objects does the on-chip CAN controller support?
The STM8AF6269TCY's beCAN controller supports 16 message objects with configurable acceptance filters and three dedicated transmit buffers. Each object includes ID masking, data length control, and priority arbitration - enabling robust handling of up to 16 unique CAN identifiers without CPU polling overhead.
Is the 2 Kbyte data EEPROM accessible during program execution?
Yes - the 2 Kbyte true data EEPROM supports read-while-write (RWW) operation, allowing firmware to execute from Flash while concurrently writing calibration data or fault logs to EEPROM. Write operations are atomic at the byte level and include hardware error detection for ECC-less reliability.
STM8AF6269TCY 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:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AF6269TCY FAQ
1.How can I place an order for STM8AF6269TCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AF6269TCY 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 STM8AF6269TCY reliable?
The price and inventory of STM8AF6269TCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AF6269TCY is usually 5 days.
3.What payment methods are accepted for STM8AF6269TCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AF6269TCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AF6269TCY?
STM8AF6269TCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AF6269TCY 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 STM8AF6269TCY?
For technical support, including STM8AF6269TCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AF6269TCY requirements.
6.How does Aetrix verify that STM8AF6269TCY is sourced from the original manufacturer or authorized distributors?
All STM8AF6269TCY 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 STM8AF6269TCY meets industry standards.
7.What is the process for return or replacement of STM8AF6269TCY?
All STM8AF6269TCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AF6269TCY, 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 STM8AF6269TCY part is unused and in its original packaging.
Return procedure for STM8AF6269TCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM8AF6269TCY Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
