STM8AF6226TCY - 8-bit Automotive MCU, 8KB Flash, 16MHz | STMicroelectronics
MPN: STM8AF6226TCY β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.79 | $6.79 |
| 10 | $6.11 | $61.10 |
| 100 | $5.43 | $543.00 |
| 500 | $4.89 | $2,445.00 |
| 1,000 | $4.35 | $4,350.00 |
Drop-in alternatives for STM8AF6226TCY 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:
STM8AF6226TCX
β Drop-Inπ Reference alternative (not in catalog)
STM8AF6226TCSSSY
β Drop-Inπ Reference alternative (not in catalog)
STM8AF6223TCY
β Drop-Inπ Reference alternative (not in catalog)
STM8AF6223TCX
β Drop-Inπ Reference alternative (not in catalog)
STM8AF6226TCY
β Drop-Inβ In Stock
$4.35 / Unit
View Datasheet βSTM8AF6226TCY Maximum Ratings & Electrical Characteristics
| Core | STM8A 8-bit |
| Maximum CPU Frequency | 16 MHz |
| Flash Memory | 8 KB (8K x 8) |
| RAM | 1 KB |
| EEPROM | 128 bytes |
| Supply Voltage | 3 V to 5.5 V |
| Number of I/O Ports | 25 |
| ADC Resolution | 10-bit |
| ADC Channels | 7 |
| Timers | 2x 16-bit, 1x 8-bit |
| Communication Interfaces | UART, SPI, I2C, LIN |
| Operating Temperature Range | -40Β°C to +150Β°C |
| Package | LQFP-32 (7x7 mm) |
| Mounting Type | Surface Mount |
| AEC-Q100 Qualification | Grade 0 |
| RoHS Status | Compliant |
STM8AF6226TCY Pin Configuration
| Pin 1 | VDD β Digital power supply |
| Pin 2 | VSS β Digital ground |
| Pin 3 | PA0 β General purpose I/O |
| Pin 4 | PA1 β General purpose I/O |
| Pin 5 | PA2 β General purpose I/O |
| Pin 6 | PA3 β General purpose I/O |
| Pin 7 | NRST β Reset input |
| Pin 8 | VDD β Digital power supply |
| Pin 9 | VSS β Digital ground |
| Pin 10 | PB0 β General purpose I/O |
| Pin 11 | PB1 β General purpose I/O |
| Pin 12 | PB2 β General purpose I/O |
| Pin 13 | PB3 β General purpose I/O |
| Pin 14 | PB4 β General purpose I/O |
| Pin 15 | PB5 β General purpose I/O |
| Pin 16 | PB6 β General purpose I/O |
| Pin 17 | PB7 β General purpose I/O |
| Pin 18 | VDDA β Analog power supply |
| Pin 19 | VSSA β Analog ground |
| Pin 20 | PC0 β General purpose I/O |
| Pin 21 | PC1 β General purpose I/O |
| Pin 22 | PC2 β General purpose I/O |
| Pin 23 | PC3 β General purpose I/O |
| Pin 24 | PC4 β General purpose I/O |
| Pin 25 | PC5 β General purpose I/O |
| Pin 26 | PC6 β General purpose I/O |
| Pin 27 | PC7 β General purpose I/O |
| Pin 28 | PD0 β General purpose I/O |
| Pin 29 | PD1 β General purpose I/O |
| Pin 30 | PD2 β General purpose I/O |
| Pin 31 | PD3 β General purpose I/O |
| Pin 32 | PD4 β General purpose I/O |
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
STM8AF6226TCY is suitable for 6 applications: Automotive Body Control Module, Automotive Lighting Control, Seat Control Module, Window Lift Module, Sensor Interface, Industrial Control.
Automotive Body Control Module
The STM8AF6226TCY is ideal for automotive body control modules (BCMs) due to its AEC-Q100 Grade 0 qualification, wide temperature range, and rich peripheral set. It can manage lighting, wipers, door locks, and window lifts with its timers and I/O ports. The 8 KB Flash provides ample code space for control algorithms, while the 10-bit ADC monitors analog signals like battery voltage and temperature. Its LIN interface enables communication with other vehicle modules, and the low-power modes help reduce quiescent current when the vehicle is off. The integrated EEPROM stores calibration data and fault codes, ensuring reliable operation over the vehicle's lifetime.
Recommended
Automotive Lighting Control
The STM8AF6226TCY is well-suited for automotive lighting control, including LED and halogen lamps. Its 16-bit timers can generate PWM signals for dimming and brightness control, while the ADC monitors current and voltage for diagnostics. The device's wide operating temperature range and AEC-Q100 Grade 0 qualification ensure reliable operation in harsh under-hood environments. The LIN interface allows the lighting module to communicate with the body control module, enabling adaptive lighting features. The 8 KB Flash is sufficient for implementing complex lighting sequences and fault detection algorithms. The low-power Halt mode reduces current draw when the lights are off, contributing to overall vehicle energy efficiency.
Recommended
Seat Control Module
The STM8AF6226TCY is an excellent choice for seat control modules in automotive applications. Its multiple timers can drive DC motors for seat adjustment, while the ADC reads potentiometer positions for precise control. The device's 25 I/O ports allow connection to switches, sensors, and motor drivers. The AEC-Q100 Grade 0 qualification ensures operation in extreme temperatures, and the integrated EEPROM stores seat position presets. The LIN interface enables communication with the body control module for synchronized adjustments. The 8 KB Flash provides enough space for implementing safety features like anti-pinch detection, which requires fast response times and reliable operation.
Recommended
Window Lift Module
The STM8AF6226TCY is well-suited for window lift modules, providing precise control of DC motors with its timers and PWM outputs. The device's ADC can monitor motor current to detect obstructions, enabling anti-pinch functionality. Its wide temperature range and AEC-Q100 Grade 0 qualification make it reliable in all climates. The LIN interface allows the window lift module to receive commands from the body control module and report status. The 8 KB Flash is sufficient for implementing debounce logic, motor control algorithms, and fault diagnostics. The low-power modes help reduce current draw when the window is not in use, contributing to vehicle energy efficiency.
Recommended
Sensor Interface
The STM8AF6226TCY can serve as a sensor interface hub in automotive systems, reading analog and digital sensors with its 10-bit ADC and communication interfaces. It can interface with temperature sensors, pressure sensors, and position sensors, processing data and sending it over LIN or CAN to the main ECU. The device's low-power modes are ideal for always-on sensor monitoring, reducing battery drain. The AEC-Q100 Grade 0 qualification ensures reliable operation in extreme conditions. The 8 KB Flash provides enough space for sensor calibration algorithms and data logging. The integrated EEPROM can store sensor calibration data, ensuring accuracy over time.
Recommended
Industrial Control
Although designed for automotive, the STM8AF6226TCY can be used in industrial control applications requiring a robust 8-bit MCU. Its wide supply voltage range (3.0V to 5.5V) and extended temperature range make it suitable for harsh industrial environments. The device's timers and PWM outputs can control motors, heaters, and valves, while the ADC monitors process variables. The UART, SPI, and I2C interfaces allow connection to sensors, displays, and communication modules. The 8 KB Flash is sufficient for many control applications, and the low-power modes help reduce energy consumption in battery-powered devices. The AEC-Q100 qualification provides an extra level of reliability for industrial applications.
Recommended
Recommended Products Summary
Engineering reference data for STM8AF6226TCY β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8AF6226TCX | STM8AF6226TCSSSY | STM8AF6223TCY |
|---|---|---|---|---|
| Package | LQFP-32 (7x7 mm) | LQFP-32 (7x7 mm) | LQFP-32 (7x7 mm) | LQFP-32 (7x7 mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 8 KB | 8 KB | 8 KB | 4 KB |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Max CPU Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Supply Voltage | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V |
| Operating Temperature | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C |
Key Differentiators
- AEC-Q100 Grade 0 qualification (vs STM8AF6223TCY)
- 8 KB Flash memory (vs STM8AF6223TCY)
- Integrated true data EEPROM (vs STM8AF6223TCY)
Design Notes
Decouple the VDD and VDDA pins with 100 nF ceramic capacitors placed as close to the pins as possible. Additionally, use a 10 Β΅F electrolytic capacitor on the main supply rail to handle transient currents. For automotive applications, ensure the supply voltage stays within 3.0V to 5.5V, and consider using a voltage regulator like the L5963 to handle load dump and reverse battery conditions.
For the LQFP-32 package, ensure proper solder paste stencil design to avoid solder bridging. Use a 0.5 mm pitch land pattern with appropriate solder mask expansion. Place the crystal oscillator (if used) close to the OSC pins and keep the trace lengths short to minimize parasitic capacitance. For EMC compliance, add series resistors on high-speed communication lines like SPI and I2C.
Do not leave unused I/O pins floating; configure them as outputs or enable internal pull-ups to avoid excessive current draw. Ensure the NRST pin has a 100 nF capacitor to ground for reliable reset. For automotive applications, implement a brown-out reset (BOR) and use the independent watchdog (IWDG) to prevent software lockups. Also, verify that the ADC reference voltage is stable and filtered to avoid noise.
Compliance Information
RoHS compliant per DigiKey and LCSC listings. AEC-Q100 Grade 0 qualified per STMicroelectronics product page.
