STM8AF6226TCY - 8-bit Automotive MCU, 8KB Flash, 16MHz | STMicroelectronics
料号： STM8AF6226TCY ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 |
STM8AF6226TCY 概述
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit central processing unit (CPU), memory, and programmable input/output peripherals. It is a subset of the broader microcontroller family, which includes 16-bit and 32-bit devices. In the hierarchy of embedded systems, an 8-bit MCU sits below 16-bit and 32-bit parts, offering lower cost and power consumption while still providing sufficient performance for control-oriented tasks such as reading sensors, driving actuators, and managing communication protocols. The STM8A core is an enhanced 8-bit architecture with a three-stage pipeline, enabling most instructions to execute in a single clock cycle.
Key features of the STM8AF6226TCY include a 16 MHz maximum CPU frequency, 8 KB of Flash with read-while-write capability, 1 KB of SRAM, and 128 bytes of true EEPROM. It also integrates a 10-bit analog-to-digital converter (ADC) with up to 7 channels, two 16-bit timers, one 8-bit timer, and a UART, SPI, and I2C interface. The device supports a supply voltage range of 3.0V to 5.5V, making it compatible with standard automotive battery systems. Its low-power modes, including Active-Halt and Halt, help reduce current consumption to as low as 1.5 µA in Halt mode.
From a technical architecture perspective, the STM8AF6226TCY is built on a high-density Flash process, providing robust data retention and endurance. The embedded EEPROM supports up to 300,000 write/erase cycles, which is critical for storing calibration data and fault codes in automotive applications. The device also includes a clock security system (CSS) that detects clock failures and automatically switches to an internal oscillator, enhancing system reliability. The ADC offers a conversion time of 3 µs at 4 MHz, enabling real-time monitoring of analog signals such as battery voltage and temperature.
Typical applications include automotive body control modules, lighting control (LED and halogen), seat control, window lift, and sensor interfaces. The wide temperature range and AEC-Q100 qualification make it ideal for under-hood and in-cabin environments where reliability is paramount. The device's rich peripheral set allows designers to consolidate multiple discrete components into a single MCU, reducing BOM cost and board space.
When designing with the STM8AF6226TCY, ensure proper decoupling of the VDD and VDDA pins with 100 nF ceramic capacitors placed close to the device. The NRST pin should be connected to a 100 nF capacitor to ground for reliable reset operation. For automotive applications, consider using the internal watchdog timer (IWDG) to prevent software lockups, and implement a brown-out reset (BOR) to handle voltage dips during cranking.
直接替换替代料： STM8AF6226TCY ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
STM8AF6226TCX
✅ 直接替换📋 参考替代料（不在目录中）
STM8AF6226TCSSSY
✅ 直接替换📋 参考替代料（不在目录中）
STM8AF6223TCY
✅ 直接替换📋 参考替代料（不在目录中）
STM8AF6223TCX
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM8AF6226TCY
✅ 直接替换✓ 有现货
$4.35 / 个
查看数据手册 →STM8AF6226TCY 最大额定值与电气特性
| Core | STM8A 8-bit |
| Maximum CPU Frequency | 16 MHz |
| Flash Memory | 8 KB (8K x 8) |
| RAM | 1 KB |
| EEPROM | 128 bytes |
| 电源电压 | 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 |
| 工作温度范围 | -40°C to +150°C |
| 封装 | LQFP-32 (7x7 mm) |
| 安装类型 | Surface Mount |
| AEC-Q100 Qualification | Grade 0 |
| RoHS 状态 | Compliant |
STM8AF6226TCY 引脚配置
| 引脚 1 | VDD — Digital power supply |
| 引脚 2 | VSS — Digital ground |
| 引脚 3 | PA0 — General purpose I/O |
| 引脚 4 | PA1 — General purpose I/O |
| 引脚 5 | PA2 — General purpose I/O |
| 引脚 6 | PA3 — General purpose I/O |
| 引脚 7 | NRST — Reset input |
| 引脚 8 | VDD — Digital power supply |
| 引脚 9 | VSS — Digital ground |
| 引脚 10 | PB0 — General purpose I/O |
| 引脚 11 | PB1 — General purpose I/O |
| 引脚 12 | PB2 — General purpose I/O |
| 引脚 13 | PB3 — General purpose I/O |
| 引脚 14 | PB4 — General purpose I/O |
| 引脚 15 | PB5 — General purpose I/O |
| 引脚 16 | PB6 — General purpose I/O |
| 引脚 17 | PB7 — General purpose I/O |
| 引脚 18 | VDDA — Analog power supply |
| 引脚 19 | VSSA — Analog ground |
| 引脚 20 | PC0 — General purpose I/O |
| 引脚 21 | PC1 — General purpose I/O |
| 引脚 22 | PC2 — General purpose I/O |
| 引脚 23 | PC3 — General purpose I/O |
| 引脚 24 | PC4 — General purpose I/O |
| 引脚 25 | PC5 — General purpose I/O |
| 引脚 26 | PC6 — General purpose I/O |
| 引脚 27 | PC7 — General purpose I/O |
| 引脚 28 | PD0 — General purpose I/O |
| 引脚 29 | PD1 — General purpose I/O |
| 引脚 30 | PD2 — General purpose I/O |
| 引脚 31 | PD3 — General purpose I/O |
| 引脚 32 | PD4 — General purpose I/O |
典型应用
STM8AF6226TCY 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
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推荐产品汇总
工程参考数据： STM8AF6226TCY ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 | -40°C to +150°C | -40°C to +150°C | -40°C to +150°C | -40°C to +150°C |
关键差异点
- AEC-Q100 Grade 0 qualification （对比 STM8AF6223TCY)
- 8 KB Flash memory （对比 STM8AF6223TCY)
- Integrated true data EEPROM （对比 STM8AF6223TCY)
设计说明
Decouple the VDD and VDDA pins with 100 nF ceramic capacitors placed as close to the pins as possible. Additionally, use a 10 µF 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.
合规信息
RoHS compliant per DigiKey and LCSC listings. AEC-Q100 Grade 0 qualified per STMicroelectronics product page.
