STM8AF6266TCY - 8-bit Automotive MCU, 32KB Flash, LQFP-32 | STMicroelectronics
部品番号: STM8AF6266TCY ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.46 | $4.46 |
| 10 | $4.1 | $41.00 |
| 100 | $3.72 | $372.00 |
| 500 | $3.35 | $1,675.00 |
| 1,000 | $3.1 | $3,100.00 |
STM8AF6266TCY 概要
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit central processing unit (CPU), memory, and peripherals integrated onto one integrated circuit. It is a type of embedded controller that executes instructions sequentially, processing data in 8-bit chunks. In the system hierarchy, an 8-bit MCU is a subset of microcontrollers, which are a type of embedded processor, which in turn falls under the broader category of integrated circuits (ICs) used in electronic systems. The STM8A core is an enhanced 8-bit architecture with a three-stage pipeline, delivering up to 16 MIPS at 16 MHz, making it suitable for real-time control tasks.
Key features include a 16 MHz maximum CPU frequency, 32 KB Flash with read-while-write capability, 2 KB SRAM, and 1 KB true data EEPROM with up to 300k write/erase cycles. The device integrates a 10-bit ADC with up to 10 channels, two 16-bit timers, one 8-bit timer, a UART, SPI, and I2C interfaces. It also includes a CAN 2.0B controller, making it ideal for automotive networking. The LQFP-32 package offers a compact footprint with 25 general-purpose I/O pins, and the device operates from a 2.95V to 5.5V supply voltage.
Technically, the STM8AF6266TCY uses a Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. The embedded EEPROM supports byte-level programming and erasing, which is critical for storing calibration data and fault codes in automotive applications. The device also features a robust clock system with an internal 16 MHz RC oscillator, an external crystal oscillator, and a phase-locked loop (PLL) for clock multiplication. The CAN controller supports both 2.0A and 2.0B protocols, with message filtering and a 3-message mailbox.
Typical applications include automotive body control modules (BCM), window lift and mirror control, HVAC control, and sensor interfaces. The CAN interface enables communication with the vehicle's main network, while the high-temperature rating and AEC-Q100 qualification ensure reliability in harsh under-hood environments. The low-power modes (Wait, Active-Halt, Halt) help reduce current consumption in battery-powered or always-on systems.
When designing with this MCU, ensure proper decoupling of the VDD and VDDA pins with 100 nF capacitors placed close to the device. The VCAP pin requires a 470 nF capacitor for internal regulator stability. For CAN communication, a CAN transceiver such as the TJA1050 is needed to interface with the physical bus. The device supports in-application programming (IAP) via the UART or CAN, enabling firmware updates in the field.
ドロップイン代替品: STM8AF6266TCY — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: STM8AF6266TCY （同一形状・フットプリント） — 相違点: ADC, Communication Interfaces, Core, Operating Temperature, Package.
クイック比較ツール — 並列比較する代替部品を選択:
STM8AF6266TCX
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM8AF6266TDX
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM8AF6268TCY
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM8AF6246TCY
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$1.95 / 個
データシートを見る →STM8AF6248TCY
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM8AF6266TCY 最大定格＆電気的特性
| Core | STM8A |
| Architecture | 8-bit CISC, Harvard |
| Max CPU Frequency | 16 MHz |
| Flash Program Memory | 32 KB (32K x 8) |
| RAM | 2 KB |
| EEPROM | 1 KB (true data EEPROM) |
| 電源電圧 | 2.95 V to 5.5 V |
| I/O Ports | 25 |
| ADC | 10-bit, up to 10 channels |
| Timers | Two 16-bit, one 8-bit |
| Communication Interfaces | UART, SPI, I2C, LIN, CAN 2.0B |
| パッケージ | LQFP-32 (7x7 mm) |
| 動作温度 | -40°C to +150°C |
| Qualification | AEC-Q100 |
| RoHS | Compliant |
STM8AF6266TCY ピン構成
| ピン 1 | VDD — Digital power supply |
| ピン 2 | VSS — Digital ground |
| ピン 3 | VCAP — Internal regulator capacitor |
| ピン 4 | NRST — Reset (active low) |
| ピン 5 | PA0 — General purpose I/O / ADC input |
| ピン 6 | PA1 — General purpose I/O / ADC input |
| ピン 7 | PA2 — General purpose I/O / ADC input |
| ピン 8 | PA3 — General purpose I/O / ADC input |
| ピン 9 | VSS — Digital ground |
| ピン 10 | VDD — Digital power supply |
| ピン 11 | PB0 — General purpose I/O / SPI |
| ピン 12 | PB1 — General purpose I/O / SPI |
| ピン 13 | PB2 — General purpose I/O / SPI |
| ピン 14 | PB3 — General purpose I/O / SPI |
| ピン 15 | PB4 — General purpose I/O / I2C |
| ピン 16 | PB5 — General purpose I/O / I2C |
| ピン 17 | PB6 — General purpose I/O / UART |
| ピン 18 | PB7 — General purpose I/O / UART |
| ピン 19 | PC0 — General purpose I/O / ADC input |
| ピン 20 | PC1 — General purpose I/O / ADC input |
| ピン 21 | PC2 — General purpose I/O / ADC input |
| ピン 22 | PC3 — General purpose I/O / ADC input |
| ピン 23 | PC4 — General purpose I/O / ADC input |
| ピン 24 | PC5 — General purpose I/O / ADC input |
| ピン 25 | PD0 — General purpose I/O / CAN |
| ピン 26 | PD1 — General purpose I/O / CAN |
| ピン 27 | PD2 — General purpose I/O / LIN |
| ピン 28 | PD3 — General purpose I/O / LIN |
| ピン 29 | PD4 — General purpose I/O / timer |
| ピン 30 | PD5 — General purpose I/O / timer |
| ピン 31 | PD6 — General purpose I/O / timer |
| ピン 32 | PD7 — General purpose I/O / timer |
主な用途
STM8AF6266TCY の用途: 6 件s: Automotive Body Control Module (BCM), Window Lift and Mirror Control, HVAC Control, Sensor Interface, Motor Control, Lighting Control.
Automotive Body Control Module (BCM)
The STM8AF6266TCY is ideal for body control modules that manage lighting, door locks, and window lifts. Its 32KB Flash and 1KB EEPROM store configuration data and fault codes, while the CAN 2.0B interface enables communication with the vehicle's main network. The AEC-Q100 qualification and -40°C to +150°C range ensure reliable operation in harsh automotive environments. The 10-bit ADC reads analog sensors for ambient light and temperature, and the 16-bit timers generate PWM signals for motor control. With 25 I/O pins, it can interface with multiple switches and actuators. The low-power modes help reduce current draw when the vehicle is off, preserving battery life. The STM8A core's 16 MIPS performance handles real-time control loops efficiently, making it a cost-effective solution for BCM applications.
おすすめ
Window Lift and Mirror Control
The STM8AF6266TCY provides precise motor control for window lifts and mirror adjustment. Its two 16-bit timers generate PWM signals to drive H-bridge circuits, while the 10-bit ADC monitors current sensing resistors for stall detection. The 1KB EEPROM stores mirror position presets and window limit positions, surviving power cycles. The LIN interface allows connection to the body control module for centralized commands. The device's 16 MHz clock and Harvard architecture ensure responsive control, and the extended temperature range supports door-mounted applications exposed to extreme weather. The 25 I/O pins accommodate position sensors, limit switches, and user switches. The low-power Halt mode reduces current consumption when idle, which is critical for battery preservation. The AEC-Q100 qualification guarantees long-term reliability in vibration-prone environments.
おすすめ
HVAC Control
The STM8AF6266TCY manages HVAC systems by reading temperature sensors via its 10-bit ADC and controlling blower motors and actuator valves. The 32KB Flash stores control algorithms and calibration tables, while the 1KB EEPROM retains user settings. The CAN interface communicates with the engine control unit for temperature data and climate control commands. The device's 16 MHz performance handles PID control loops for precise temperature regulation. The extended temperature range and AEC-Q100 qualification ensure reliable operation in the passenger compartment and under-dash areas. The UART interface can connect to a diagnostic port for service and troubleshooting. The low-power modes help reduce battery drain when the vehicle is off. With 25 I/O pins, it can interface with multiple sensors, switches, and actuators, making it a versatile solution for HVAC control.
おすすめ
Sensor Interface
The STM8AF6266TCY serves as a sensor hub, reading analog and digital sensors and transmitting data over CAN or LIN. Its 10-bit ADC with up to 10 channels interfaces with temperature, pressure, and position sensors. The SPI and I2C interfaces connect to digital sensors like accelerometers and gyroscopes. The 1KB EEPROM stores calibration coefficients and sensor IDs. The device's 16 MHz performance enables real-time sensor data processing and filtering. The CAN 2.0B interface allows the MCU to broadcast sensor data to the vehicle network, while the LIN interface supports lower-cost sub-networks. The extended temperature range and AEC-Q100 qualification make it suitable for engine bay and under-chassis sensor modules. The low-power modes reduce current consumption in always-on sensor monitoring applications. The 25 I/O pins provide ample connectivity for multiple sensors and status LEDs.
おすすめ
Motor Control
The STM8AF6266TCY is well-suited for brush DC motor control in automotive applications like seat adjustment and cooling fans. Its two 16-bit timers generate complementary PWM signals for H-bridge or half-bridge drivers. The 10-bit ADC monitors motor current for overcurrent protection and stall detection. The 32KB Flash stores motor control algorithms, including soft-start and speed ramping. The CAN interface allows remote control and diagnostics from the vehicle network. The device's 16 MHz performance ensures fast control loop execution, and the Harvard architecture allows simultaneous data access for efficient PWM updates. The extended temperature range and AEC-Q100 qualification ensure reliable operation in high-temperature environments. The low-power modes help reduce current draw when the motor is idle. With 25 I/O pins, it can interface with Hall sensors, encoders, and limit switches.
おすすめ
Lighting Control
The STM8AF6266TCY controls automotive lighting systems, including headlamps, taillights, and interior lighting. Its 16-bit timers generate PWM signals for dimming and intensity control. The 10-bit ADC reads ambient light sensors for automatic headlamp activation. The 1KB EEPROM stores lighting profiles and calibration data. The CAN interface allows communication with the body control module for centralized lighting management. The device's 16 MHz performance handles complex lighting sequences and diagnostics. The extended temperature range and AEC-Q100 qualification ensure reliable operation in exterior lighting applications exposed to extreme temperatures. The low-power modes reduce current draw when lights are off. With 25 I/O pins, it can control multiple LED channels and read switch inputs. The UART interface can be used for diagnostic communication.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STM8AF6266TCY — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STM8AF6266TCX | STM8AF6266TDX | STM8AF6268TCY |
|---|---|---|---|---|
| Package | LQFP-32 | LQFP-32 - same | LQFP-32 - same | LQFP-32 - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Max CPU Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB |
| Operating Temperature | -40°C to +150°C | -40°C to +125°C | -40°C to +150°C | -40°C to +150°C |
| CAN Interface | Yes (2.0B) | Yes (2.0B) | Yes (2.0B) | Yes (2.0B) |
主な差別化要因
- Extended temperature range up to +150°C （vs STM8AF6266TCX)
- Integrated CAN 2.0B controller （vs STM8AF6246TCY)
- 32KB Flash with read-while-write （vs STM8AF6248TCY)
設計ノート
Decouple the VDD and VDDA pins with 100 nF ceramic capacitors placed as close to the pins as possible. Additionally, place a 4.7 uF bulk capacitor on the main power rail. The VCAP pin requires a 470 nF capacitor for internal regulator stability. Ensure the supply voltage stays within 2.95V to 5.5V to avoid brown-out conditions.
For the LQFP-32 package, ensure proper solder paste stencil design for the 0.8mm pitch leads. Use a solid ground plane under the device to minimize noise. Keep high-speed communication lines (CAN, SPI) short and shielded if possible. Follow STMicroelectronics layout guidelines in the datasheet for optimal EMC performance.
Do not leave the NRST pin floating; connect a 100 nF capacitor to ground and a 10 kOhm pull-up resistor to VDD. Ensure the VCAP capacitor is connected and not omitted, as it is critical for internal regulator operation. For CAN communication, always use a transceiver like the TJA1050; do not connect the MCU directly to the bus.
コンプライアンス情報
AEC-Q100 qualified per datasheets.com. RoHS compliant per DigiKey. REACH and conflict minerals status not specified in provided data.
