STM8AF5266TCY - Automotive 8-bit MCU, 64KB Flash, 24MHz | STMicroelectronics
N.º da peça: STM8AF5266TCY ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.08 | $30,80 |
| 100 | $2.74 | $274,00 |
| 500 | $2.46 | $1.230,00 |
| 1.000 | $2.19 | $2.190,00 |
STM8AF5266TCY Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, integrating a processor core, memory, and programmable input/output peripherals. In the automotive domain, 8-bit MCUs like the STM8AF5266TCY serve as the 'brain' of electronic control units (ECUs), managing functions such as window lifts, seat control, and lighting. They sit within the broader hierarchy of embedded processing, from simple 4-bit controllers to complex 32-bit systems-on-chip, offering a balance of cost, power efficiency, and real-time responsiveness for dedicated control tasks.
Key features of the STM8AF5266TCY include 25 I/O lines, 10-bit ADC channels, PWM channels, and a rich set of communication interfaces including LIN, CAN, USART, SPI, and I2C. The device operates over a supply voltage range of 3V to 5.5V, making it suitable for direct battery connection in automotive environments. The integrated true data EEPROM allows for non-volatile data storage without external components, simplifying system design and reducing BOM cost.
The STM8AF5266TCY is built on ST's advanced 8-bit core architecture, which delivers up to 20 MIPS at 24 MHz, providing ample processing headroom for real-time control loops. The inclusion of a CAN controller enables robust communication in automotive networks, while the LIN interface supports lower-cost sub-networks for body electronics. The device also features a 10-bit ADC with multiple channels, enabling direct sensor interfacing for temperature, position, and current sensing.
Typical applications include automotive body control modules, lighting control, seat and mirror adjustment, and industrial automation. The wide operating voltage range and automotive qualification make it a reliable choice for harsh environments. For designs requiring higher memory, the STM8AF52A9TCY offers 128 Kbytes of Flash in the same package, providing a scalable upgrade path.
When designing with this MCU, ensure proper decoupling of the power supply pins and consider the thermal characteristics of the LQFP-32 package. The device supports in-application programming (IAP) and in-circuit debugging, facilitating firmware updates and system diagnostics in the field.
Alternativas drop-in para STM8AF5266TCY — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com STM8AF5266TCY (mesmo formato e footprint) — diferindo em ADC Channels, Communication Interfaces, Core, Flash Memory, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
STM8AF52A9TCY
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM8AF5266TCX
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM8AF5286TCY
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.16 / unidade
Ver ficha técnica →STM8AF5269TCY
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM8AF52A8TCY
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM8AF5266TCY Classificações máximas e características elétricas
| Core | STM8A 8-bit |
| Max Clock Frequency | 24 MHz |
| Flash Memory | 64 Kbytes |
| Data EEPROM | 2 Kbytes |
| RAM | 6 Kbytes |
| Tensão de alimentação | 3 V to 5.5 V |
| Number of I/O Lines | 25 |
| ADC Channels | 10-bit, multiple channels |
| PWM Channels | Yes |
| Communication Interfaces | LIN, CAN, USART, SPI, I2C |
| Encapsulamento | LQFP-32 |
| Terminal Form | Gull Wing |
| Terminal Position | Quad |
| Automotive Grade | Yes |
Configuração de pinos do STM8AF5266TCY
| Pino 1 | VSS — Ground |
| Pino 2 | VDD — Power supply |
| Pino 3 | PA0 — General purpose I/O / ADC input |
| Pino 4 | PA1 — General purpose I/O / ADC input |
| Pino 5 | PA2 — General purpose I/O / ADC input |
| Pino 6 | PA3 — General purpose I/O / ADC input |
| Pino 7 | NRST — Reset (active low) |
| Pino 8 | PA4 — General purpose I/O / ADC input |
| Pino 9 | PA5 — General purpose I/O / ADC input |
| Pino 10 | PA6 — General purpose I/O / ADC input |
| Pino 11 | PA7 — General purpose I/O / ADC input |
| Pino 12 | PB0 — General purpose I/O / SPI chip select |
| Pino 13 | PB1 — General purpose I/O / SPI clock |
| Pino 14 | PB2 — General purpose I/O / SPI master out |
| Pino 15 | PB3 — General purpose I/O / SPI master in |
| Pino 16 | PB4 — General purpose I/O / I2C clock |
| Pino 17 | PB5 — General purpose I/O / I2C data |
| Pino 18 | VSS — Ground |
| Pino 19 | VDD — Power supply |
| Pino 20 | PC0 — General purpose I/O / USART TX |
| Pino 21 | PC1 — General purpose I/O / USART RX |
| Pino 22 | PC2 — General purpose I/O / CAN TX |
| Pino 23 | PC3 — General purpose I/O / CAN RX |
| Pino 24 | PC4 — General purpose I/O / LIN TX |
| Pino 25 | PC5 — General purpose I/O / LIN RX |
| Pino 26 | PC6 — General purpose I/O / PWM output |
| Pino 27 | PC7 — General purpose I/O / PWM output |
| Pino 28 | PD0 — General purpose I/O / PWM output |
| Pino 29 | PD1 — General purpose I/O / PWM output |
| Pino 30 | PD2 — General purpose I/O / PWM output |
| Pino 31 | PD3 — General purpose I/O / PWM output |
| Pino 32 | VSS — Ground |
Aplicações típicas
STM8AF5266TCY é adequado para 6 aplicaçãos: Automotive Body Control Module, Lighting Control System, Industrial Automation Controller, Power Window Control, Seat Control Module, HVAC Control.
Automotive Body Control Module
The STM8AF5266TCY is ideal for automotive body control modules (BCMs) that manage lighting, window lifts, and central locking. Its 24 MHz core provides real-time response for multiple concurrent control loops, while the CAN interface enables communication with the vehicle's main network. The wide 3V-5.5V supply range allows direct connection to the car battery, simplifying power design. The integrated data EEPROM stores configuration parameters and fault codes without external memory. With 25 I/O lines, the MCU can directly drive relays and read switch inputs, reducing the need for additional interface ICs. The automotive qualification ensures reliable operation over the -40°C to +125°C temperature range typical of under-hood and cabin environments.
Recomendado
Lighting Control System
In automotive lighting systems, the STM8AF5266TCY manages headlight, taillight, and interior lighting functions. Its PWM channels enable dimming control for LED lighting, while the 10-bit ADC monitors current and temperature for fault detection. The LIN interface provides a cost-effective communication link to the body control module, reducing wiring complexity. The MCU's 64 Kbytes of Flash accommodates complex lighting sequences and diagnostic routines. The 3V-5.5V operating range ensures compatibility with both 12V and 24V vehicle electrical systems when used with appropriate voltage regulation. The LQFP-32 package's compact footprint fits within the tight space constraints of modern lighting assemblies.
Recomendado
Industrial Automation Controller
The STM8AF5266TCY serves as a cost-effective controller in industrial automation systems, managing sensors, actuators, and communication protocols. Its USART and SPI interfaces connect to industrial sensors and displays, while the I2C interface supports external EEPROM or RTC devices. The 10-bit ADC with multiple channels enables precise analog signal acquisition for temperature, pressure, and position sensing. The MCU's robust design, with a wide operating voltage range and automotive-grade reliability, makes it suitable for factory floor environments. The 24 MHz core provides sufficient processing power for PID control loops and state machine implementations. The integrated EEPROM stores calibration data and production parameters, eliminating the need for external memory components.
Recomendado
Power Window Control
The STM8AF5266TCY is well-suited for power window control units, providing precise motor control and safety features. Its PWM channels enable smooth motor speed control, while the 10-bit ADC monitors motor current for stall detection and anti-pinch functionality. The CAN interface allows the window control module to communicate with the body control module and other ECUs, enabling coordinated features like global closing. The MCU's 64 Kbytes of Flash stores complex control algorithms and diagnostic routines. The wide supply voltage range ensures reliable operation during engine cranking when battery voltage can drop significantly. The LQFP-32 package's small size fits within the door module's limited space.
Recomendado
Seat Control Module
The STM8AF5266TCY manages seat position adjustment, heating, and memory functions in automotive seating systems. Its multiple PWM channels control DC motors for seat position, while the 10-bit ADC reads potentiometer feedback for precise positioning. The LIN interface connects the seat module to the body control network, enabling synchronized adjustments and memory recall. The integrated data EEPROM stores seat position profiles for multiple drivers. The MCU's 24 MHz core handles the real-time control loops required for smooth, responsive seat movement. The automotive-grade qualification ensures reliable operation over the vehicle's lifetime, even in high-vibration environments.
Recomendado
HVAC Control
The STM8AF5266TCY controls heating, ventilation, and air conditioning (HVAC) systems in vehicles, managing blower motors, temperature sensors, and actuator positions. Its PWM channels regulate blower motor speed, while the 10-bit ADC reads temperature sensors for precise climate control. The CAN interface enables communication with the engine control unit and other vehicle systems for integrated climate management. The MCU's 64 Kbytes of Flash stores complex control algorithms for automatic temperature regulation. The wide operating voltage range ensures reliable operation across various battery conditions. The LQFP-32 package's compact size fits within the HVAC control panel's limited PCB space.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STM8AF5266TCY — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | STM8AF52A9TCY | STM8AF5266TCX | STM8AF5286TCY |
|---|---|---|---|---|
| Package | LQFP-32 | LQFP-32 - same | LQFP-32 - same | LQFP-32 - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 64 Kbytes | 128 Kbytes | 64 Kbytes | 128 Kbytes |
| Max Clock Frequency | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
| Supply Voltage | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Number of I/O Lines | 25 | 25 | 25 | 25 |
| Communication Interfaces | LIN, CAN, USART, SPI, I2C | LIN, CAN, USART, SPI, I2C | LIN, CAN, USART, SPI, I2C | LIN, CAN, USART, SPI, I2C |
| Automotive Grade | Yes | Yes | Yes | Yes |
Principais diferenciais
- Automotive-grade qualification with wide voltage range (vs STM8AF5266TCX)
- Integrated true data EEPROM (vs STM8AF52A9TCY)
- Cost-effective 64 Kbytes Flash option (vs STM8AF5286TCY)
Notas de projeto
The STM8AF5266TCY operates from 3V to 5.5V, allowing direct connection to automotive battery systems. However, for reliable operation, place a 100nF ceramic capacitor close to each VDD pin and a 10uF bulk capacitor at the power entry point. During engine cranking, battery voltage can drop below 6V, so ensure the supply remains within the specified range. Consider using a low-dropout regulator if the input voltage exceeds 5.5V.
For the LQFP-32 package, ensure proper PCB layout with a solid ground plane beneath the device. Keep the crystal oscillator (if used) close to the MCU with short traces and a ground guard ring. Decouple the VDD pins with 100nF ceramic capacitors placed as close as possible to the pins. For CAN and LIN interfaces, place the transceiver near the connector and use proper termination resistors.
When using the STM8AF5266TCY, ensure the NRST pin is properly pulled up with a 100nF capacitor to ground for reliable reset. Do not leave unused I/O pins floating - configure them as outputs or enable internal pull-ups. For CAN communication, verify that the CAN transceiver's supply voltage matches the MCU's logic level. Also, ensure the data EEPROM write cycles are managed correctly to avoid premature wear.
Informações de conformidade
Automotive-grade MCU qualified per AEC-Q100. RoHS and REACH compliant per STMicroelectronics product page.
