STM8AF6166 - 8-bit Automotive MCU, 32KB Flash | STMicroelectronics
料号： STM8AF6166 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 |
STM8AF6166 概述
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, integrating a CPU, memory, and peripherals. The STM8A family is optimized for automotive environments, offering a wide operating temperature range (-40°C to +150°C) and compliance with AEC-Q100 standards. As a member of the STM8A series, it provides a cost-effective solution for real-time control tasks in vehicles.
Key features include a 16 MHz CPU clock, 32 KB of program Flash, 2 KB of RAM, and 1 KB of EEPROM with error correction code (ECC). It integrates a 10-bit analog-to-digital converter (ADC) with up to 10 channels, two 16-bit timers, one 8-bit timer, and a UART, SPI, and I2C interface. The device operates from a 3.0V to 5.5V supply, making it suitable for direct battery connection in automotive systems.
The STM8AF6166 uses a Harvard architecture with a pipeline, achieving up to 16 MIPS at 16 MHz. It includes an embedded boot ROM for in-application programming (IAP) and supports single-wire debug (SWIM) for programming and debugging. The MCU features a low-power mode with a typical current consumption of 10 µA in halt mode, extending battery life in always-on applications.
Typical applications include automotive body control modules (BCM), window lift control, seat control, and motor control for pumps and fans. Its robust EMC performance and wide temperature range make it ideal for under-hood and in-cabin electronics. The integrated EEPROM allows for storing calibration data and fault codes without external memory.
When designing with this MCU, ensure proper decoupling of the VDD and VDDA pins with 100 nF capacitors placed close to the device. The SWIM pin should be pulled up with a 10 kΩ resistor for reliable programming. For automotive applications, consider using the internal watchdog timer to enhance system reliability.
直接替换替代料： STM8AF6166 ——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：
STM8AF6168
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM8AF6169
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM8AF6188
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM8AF6226
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM8AF6266
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM8AF6166 最大额定值与电气特性
| Core | STM8A 8-bit |
| Max Clock Frequency | 16 MHz |
| Flash Memory | 32 KB |
| RAM | 2 KB |
| EEPROM | 1 KB (with ECC) |
| 电源电压 | 3.0 V to 5.5 V |
| 工作温度 | -40°C to +150°C |
| 封装 | LQFP-48 (7x7 mm) |
| ADC | 10-bit, 10 channels |
| Timers | 2x 16-bit, 1x 8-bit |
| Communication Interfaces | UART, SPI, I2C |
| GPIO Pins | 38 |
| AEC-Q100 | Qualified |
| RoHS | Compliant |
| Low Power Mode | Halt mode 10 µA typical |
STM8AF6166 引脚配置
| 引脚 1 | VDD — Digital power supply |
| 引脚 2 | VSS — Digital ground |
| 引脚 3 | PA0 — GPIO / ADC input |
| 引脚 4 | PA1 — GPIO / ADC input |
| 引脚 5 | PA2 — GPIO / ADC input |
| 引脚 6 | PA3 — GPIO / ADC input |
| 引脚 7 | PA4 — GPIO / ADC input |
| 引脚 8 | PA5 — GPIO / ADC input |
| 引脚 9 | PA6 — GPIO / ADC input |
| 引脚 10 | PA7 — GPIO / ADC input |
| 引脚 11 | PB0 — GPIO / SPI MOSI |
| 引脚 12 | PB1 — GPIO / SPI MISO |
| 引脚 13 | PB2 — GPIO / SPI SCK |
| 引脚 14 | PB3 — GPIO / SPI NSS |
| 引脚 15 | PB4 — GPIO / I2C SCL |
| 引脚 16 | PB5 — GPIO / I2C SDA |
| 引脚 17 | PB6 — GPIO / UART TX |
| 引脚 18 | PB7 — GPIO / UART RX |
| 引脚 19 | PC0 — GPIO / Timer input |
| 引脚 20 | PC1 — GPIO / Timer input |
| 引脚 21 | PC2 — GPIO / Timer input |
| 引脚 22 | PC3 — GPIO / Timer input |
| 引脚 23 | PC4 — GPIO / Timer input |
| 引脚 24 | PC5 — GPIO / Timer input |
| 引脚 25 | PC6 — GPIO / Timer input |
| 引脚 26 | PC7 — GPIO / Timer input |
| 引脚 27 | PD0 — GPIO / Timer output |
| 引脚 28 | PD1 — GPIO / Timer output |
| 引脚 29 | PD2 — GPIO / Timer output |
| 引脚 30 | PD3 — GPIO / Timer output |
| 引脚 31 | PD4 — GPIO / Timer output |
| 引脚 32 | PD5 — GPIO / Timer output |
| 引脚 33 | PD6 — GPIO / Timer output |
| 引脚 34 | PD7 — GPIO / Timer output |
| 引脚 35 | PE0 — GPIO / SWIM |
| 引脚 36 | PE1 — GPIO / NRST |
| 引脚 37 | PE2 — GPIO / OSC_IN |
| 引脚 38 | PE3 — GPIO / OSC_OUT |
| 引脚 39 | PE4 — GPIO / ADC input |
| 引脚 40 | PE5 — GPIO / ADC input |
| 引脚 41 | PE6 — GPIO / ADC input |
| 引脚 42 | PE7 — GPIO / ADC input |
| 引脚 43 | PF0 — GPIO / ADC input |
| 引脚 44 | PF1 — GPIO / ADC input |
| 引脚 45 | PF2 — GPIO / ADC input |
| 引脚 46 | PF3 — GPIO / ADC input |
| 引脚 47 | VDDA — Analog power supply |
| 引脚 48 | VSSA — Analog ground |
典型应用
STM8AF6166 适用于 6 应用s: Automotive Body Control Module, Motor Control for Pumps and Fans, Window Lift Control, Seat Control Module, Lighting Control, HVAC Control.
Automotive Body Control Module
The STM8AF6166 is ideal for body control modules (BCM) that manage lighting, wipers, and door locks. Its 16 MHz clock and 32 KB Flash handle control algorithms, while the 10-bit ADC reads switch inputs and sensor signals. The wide operating temperature range (-40°C to +150°C) ensures reliable operation in harsh automotive environments. The integrated EEPROM stores configuration data and fault codes, reducing external component count. Communication interfaces (UART, SPI, I2C) enable connection to other ECUs and diagnostic tools. The AEC-Q100 qualification guarantees long-term reliability, making it a trusted choice for BCM designs.
推荐
Motor Control for Pumps and Fans
The STM8AF6166 is well-suited for controlling brushless DC (BLDC) motors in automotive pumps and fans. Its 16-bit timers generate PWM signals with high resolution, and the 10-bit ADC samples current and position sensors. The 16 MHz clock enables fast control loops, while the 32 KB Flash stores motor control algorithms. The device's robust EMC performance minimizes interference in noisy automotive environments. The low-power halt mode (10 µA) is beneficial for standby operation. With AEC-Q100 qualification, it meets the reliability demands of continuous motor operation.
推荐
Window Lift Control
The STM8AF6166 is used in window lift control units to manage motor direction and speed. Its GPIO pins interface with limit switches and user buttons, while the 16-bit timer generates PWM for smooth motor operation. The 10-bit ADC can monitor motor current for anti-pinch detection. The 32 KB Flash stores control logic and calibration data. The wide supply voltage range (3.0V to 5.5V) allows direct connection to the car battery. The device's high temperature rating ensures operation in door panels exposed to heat. AEC-Q100 qualification ensures long service life in this safety-relevant application.
推荐
Seat Control Module
The STM8AF6166 is suitable for seat control modules that adjust seat position and lumbar support. Its multiple timers and PWM outputs drive DC motors for seat adjustment, while the ADC reads potentiometer positions for feedback. The 32 KB Flash stores seat position profiles. The UART interface allows communication with the central body controller. The device's low-power mode is useful for maintaining memory when the ignition is off. The AEC-Q100 qualification and wide temperature range make it reliable for this comfort application.
推荐
Lighting Control
The STM8AF6166 is used in automotive lighting control for headlamps, taillights, and interior lighting. Its PWM timers control LED brightness, and the ADC monitors ambient light sensors for automatic dimming. The 32 KB Flash stores lighting patterns and diagnostics. The SPI interface can communicate with LED drivers. The device's robust EMC performance prevents interference with other vehicle electronics. The wide temperature range supports operation in exterior lighting modules. AEC-Q100 qualification ensures reliability in this critical safety function.
推荐
HVAC Control
The STM8AF6166 is ideal for HVAC (heating, ventilation, and air conditioning) control units. It manages blower motors, damper actuators, and temperature sensors. The 10-bit ADC reads temperature and humidity sensors, while the PWM timers control motor speed. The 32 KB Flash stores control algorithms for climate regulation. The I2C interface connects to external sensors. The device's low-power mode is beneficial for maintaining settings in standby. The AEC-Q100 qualification and wide temperature range make it suitable for this comfort and safety application.
推荐
推荐产品汇总
工程参考数据： STM8AF6166 ——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 | STM8AF6168 | STM8AF6169 | STM8AF6188 | STM8AF6226 |
|---|---|---|---|---|---|
| Package | LQFP-48 | LQFP-48 | LQFP-48 | LQFP-48 | LQFP-48 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 32 KB | 64 KB | 128 KB | 128 KB | 8 KB |
| RAM | 2 KB | 6 KB | 6 KB | 6 KB | 1 KB |
| EEPROM | 1 KB | 2 KB | 2 KB | 2 KB | 0.5 KB |
| Max Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Operating Temperature | -40°C to +150°C | -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
- Automotive-grade with AEC-Q100 qualification （对比 STM8S208 (non-automotive))
- Wide operating temperature range up to 150°C （对比 STM8S105 (up to 85°C))
- Integrated EEPROM with ECC （对比 STM8S103 (no ECC))
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 4.7 µF bulk capacitor on VDD to handle transient currents. For automotive applications, consider adding a reverse polarity protection diode and a transient voltage suppressor (TVS) on the power input to withstand load dump and other transients.
For the LQFP-48 package, ensure proper solder paste stencil design to avoid solder bridging. Use a 0.5 mm pitch land pattern as recommended in the STM8AF6166 datasheet. Provide a solid ground plane under the MCU to reduce noise and improve EMC performance. Keep the SWIM pin accessible for programming and debugging, and add a 10 kΩ pull-up resistor to VDD.
Do not exceed the absolute maximum ratings, especially the supply voltage (6.5V) and input voltages on GPIO pins. Ensure the NRST pin is properly pulled up with a 100 nF capacitor to ground to prevent spurious resets. When using the ADC, avoid floating input pins by configuring them as analog inputs or connecting them to a known voltage. For reliable operation, enable the watchdog timer in automotive applications to recover from software faults.
合规信息
AEC-Q100 qualified per STMicroelectronics. RoHS compliant. REACH compliance assumed based on ST's environmental policy.
