STM8AF6286TCY - 8-bit Automotive MCU, 64KB Flash, 24MHz | STMicroelectronics
MPN: STM8AF6286TCY β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.25 | $3.25 |
| 10 | $2.95 | $29.50 |
| 100 | $2.45 | $245.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for STM8AF6286TCY β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM8AF6288TCY
β Drop-Inπ Reference alternative (not in catalog)
STM8AF6226TCY
β Drop-Inβ 99,999 In Stock
$1.38 / Unit
View Datasheet βSTM8AF6266TCY
β Drop-Inβ 99,999 In Stock
$2.09 / Unit
View Datasheet βSTM8AF6286TDY
β‘ Same Packageπ Reference alternative (not in catalog)
STM8AF6286TCY Maximum Ratings & Electrical Characteristics
| Core | STM8 8-bit |
| Max Clock Frequency | 24 MHz |
| Flash Memory | 64 KB |
| RAM | 6 KB |
| EEPROM | 2 KB |
| Supply Voltage | 3.0V to 5.5V |
| Operating Temperature | -40Β°C to +150Β°C |
| Package | LQFP-48 |
| ADC | 10-bit, 10 channels |
| Timers | Multiple 16-bit timers |
| UART | 2 |
| SPI | 1 |
| I2C | 1 |
| GPIO | 38 |
| AEC-Q100 | Grade 0 |
| RoHS | Compliant |
STM8AF6286TCY Pin Configuration
| Pin 1 | VDD β Digital power supply |
| Pin 2 | VSS β Digital ground |
| Pin 3 | PA0 β GPIO / ADC input |
| Pin 4 | PA1 β GPIO / ADC input |
| Pin 5 | PA2 β GPIO / ADC input |
| Pin 6 | PA3 β GPIO / ADC input |
| Pin 7 | NRST β Reset (active low) |
| Pin 8 | PA4 β GPIO / ADC input |
| Pin 9 | PA5 β GPIO / ADC input |
| Pin 10 | PA6 β GPIO / ADC input |
| Pin 11 | PA7 β GPIO / ADC input |
| Pin 12 | VDDIO β I/O power supply |
| Pin 13 | VSSIO β I/O ground |
| Pin 14 | PB0 β GPIO / timer input |
| Pin 15 | PB1 β GPIO / timer input |
| Pin 16 | PB2 β GPIO / timer input |
| Pin 17 | PB3 β GPIO / timer input |
| Pin 18 | PB4 β GPIO / timer input |
| Pin 19 | PB5 β GPIO / timer input |
| Pin 20 | PB6 β GPIO / timer input |
| Pin 21 | PB7 β GPIO / timer input |
| Pin 22 | VDDA β Analog power supply |
| Pin 23 | VSSA β Analog ground |
| Pin 24 | PC0 β GPIO / ADC input |
| Pin 25 | PC1 β GPIO / ADC input |
| Pin 26 | PC2 β GPIO / ADC input |
| Pin 27 | PC3 β GPIO / ADC input |
| Pin 28 | PC4 β GPIO / ADC input |
| Pin 29 | PC5 β GPIO / ADC input |
| Pin 30 | PC6 β GPIO / ADC input |
| Pin 31 | PC7 β GPIO / ADC input |
| Pin 32 | PD0 β GPIO / UART |
| Pin 33 | PD1 β GPIO / UART |
| Pin 34 | PD2 β GPIO / SPI |
| Pin 35 | PD3 β GPIO / SPI |
| Pin 36 | PD4 β GPIO / SPI |
| Pin 37 | PD5 β GPIO / SPI |
| Pin 38 | PD6 β GPIO / I2C |
| Pin 39 | PD7 β GPIO / I2C |
| Pin 40 | PE0 β GPIO / timer |
| Pin 41 | PE1 β GPIO / timer |
| Pin 42 | PE2 β GPIO / timer |
| Pin 43 | PE3 β GPIO / timer |
| Pin 44 | PE4 β GPIO / timer |
| Pin 45 | PE5 β GPIO / timer |
| Pin 46 | PE6 β GPIO / timer |
| Pin 47 | PE7 β GPIO / timer |
| Pin 48 | VDD β Digital power supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
STM8AF6286TCY is suitable for 6 applications: Automotive Body Control Module, Automotive Lighting Control, Seat Control Module, Window Lift Control, Sensor Interface, Industrial Control.
Automotive Body Control Module
The STM8AF6286TCY is ideal for body control modules (BCM) due to its AEC-Q100 Grade 0 qualification, wide operating temperature range, and rich peripheral set. It can manage lighting, wipers, and door locks with its multiple timers and UARTs for CAN communication. The 64 KB Flash provides ample space for complex control algorithms, while the EEPROM stores calibration data and fault codes. Its low power modes help reduce battery drain when the vehicle is off.
Recommended
Automotive Lighting Control
For automotive lighting systems, the STM8AF6286TCY provides precise PWM control via its timers, enabling dimming and dynamic lighting effects. Its 10-bit ADC can monitor ambient light sensors and adjust brightness accordingly. The device's robust ESD protection and wide temperature range ensure reliable operation in harsh environments. The 64 KB Flash allows for storing multiple lighting profiles, and the I2C interface can communicate with LED drivers.
Recommended
Seat Control Module
The STM8AF6286TCY is well-suited for seat control modules, where it manages motor drivers for seat adjustment, heating, and memory functions. Its multiple timers generate PWM signals for motor speed control, and the ADC reads potentiometer positions for seat position feedback. The EEPROM stores seat memory profiles, and the UART interfaces with other vehicle systems. The device's low power consumption is beneficial for maintaining memory when the ignition is off.
Recommended
Window Lift Control
In window lift systems, the STM8AF6286TCY provides reliable control of DC motors with anti-pinch detection. Its ADC monitors current sensing resistors to detect obstructions, and the timers generate PWM for smooth motor operation. The device's fast interrupt response ensures quick reaction to switch inputs. The 64 KB Flash allows for implementing complex anti-pinch algorithms, and the EEPROM stores calibration data for motor characteristics.
Recommended
Sensor Interface
The STM8AF6286TCY can interface with various automotive sensors, such as temperature, pressure, and position sensors, using its 10-bit ADC and I2C/SPI interfaces. Its high-speed core processes sensor data in real-time, and the EEPROM stores calibration coefficients. The device's wide operating temperature range ensures accurate readings in extreme conditions. The UART can transmit sensor data to other ECUs via LIN or CAN.
Recommended
Industrial Control
Beyond automotive, the STM8AF6286TCY is suitable for industrial control applications such as motor control, PLCs, and automation. Its robust design, wide temperature range, and rich peripherals make it a cost-effective solution for 8-bit control tasks. The device's 5V operation is compatible with industrial logic levels, and its EEPROM is useful for storing configuration parameters. The SPI and I2C interfaces allow connection to external sensors and actuators.
Recommended
Recommended Products Summary
Engineering reference data for STM8AF6286TCY β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8AF6288TCY | STM8AF6226TCY | STM8AF6266TCY |
|---|---|---|---|---|
| Package | LQFP-48 | LQFP-48 | LQFP-48 | LQFP-48 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 64 KB | 128 KB | 32 KB | 32 KB |
| RAM | 6 KB | 6 KB | 3 KB | 2 KB |
| EEPROM | 2 KB | 2 KB | 1 KB | 1 KB |
| Max Clock Frequency | 24 MHz | 24 MHz | 16 MHz | 16 MHz |
| ADC Channels | 10 | 10 | 10 | 10 |
| AEC-Q100 Grade | Grade 0 | Grade 0 | Grade 0 | Grade 0 |
Key Differentiators
- AEC-Q100 Grade 0 qualification (vs STM8AF6226TCY)
- Higher clock frequency (vs STM8AF6226TCY)
- Larger memory (vs STM8AF6226TCY)
Design Notes
Decouple the VDD and VDDA pins with 100nF ceramic capacitors placed as close to the pins as possible. Additionally, use a 10uF bulk capacitor on the main supply rail. For VDDA, a ferrite bead in series can help filter high-frequency noise, improving ADC accuracy.
Ensure a solid ground plane under the MCU to minimize noise and provide a low-impedance return path. Keep the crystal oscillator (if used) close to the OSC pins with short traces and a ground guard ring. Avoid routing high-speed signals near the crystal to prevent interference.
Do not leave unused GPIO pins floating; configure them as outputs or enable internal pull-ups to avoid excessive current draw. Also, ensure the NRST pin has a proper reset circuit with a 100nF capacitor to ground to prevent spurious resets in noisy environments.
Compliance Information
AEC-Q100 Grade 0 qualified per STMicroelectronics. RoHS compliant. REACH compliance assumed based on ST policy.
