STM8AF5266TCY - Automotive 8-bit MCU, 64KB Flash, 24MHz | STMicroelectronics
MPN: STM8AF5266TCY ✓ AktifSTM8AF5266TCY Ringkasan
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.
Alternatif penggantian untuk STM8AF5266TCY — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian STM8AF5266TCY (sama faktor bentuk dan footprint) — berbeda di dalam ADC Channels, Communication Interfaces, Core, Flash Memory, Package.
STM8AF52A9TCY
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
STM8AF5266TCX
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
STM8AF5286TCY
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →STM8AF5269TCY
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
STM8AF52A8TCY
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
STM8AF5266TCY Rating Maksimal & Karakteristik Listrik
| Core | STM8A 8-bit |
| Max Clock Frequency | 24 MHz |
| Flash Memory | 64 Kbytes |
| Data EEPROM | 2 Kbytes |
| RAM | 6 Kbytes |
| Tegangan Pemuat | 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 |
| Paket | LQFP-32 |
| Terminal Form | Gull Wing |
| Terminal Position | Quad |
| Automotive Grade | Yes |
Konfigurasi Pin STM8AF5266TCY
| Pin produk 1 | VSS — Ground |
| Pin produk 2 | VDD — Power supply |
| Pin produk 3 | PA0 — General purpose I/O / ADC input |
| Pin produk 4 | PA1 — General purpose I/O / ADC input |
| Pin produk 5 | PA2 — General purpose I/O / ADC input |
| Pin produk 6 | PA3 — General purpose I/O / ADC input |
| Pin produk 7 | NRST — Reset (active low) |
| Pin produk 8 | PA4 — General purpose I/O / ADC input |
| Pin produk 9 | PA5 — General purpose I/O / ADC input |
| Pin produk 10 | PA6 — General purpose I/O / ADC input |
| Pin produk 11 | PA7 — General purpose I/O / ADC input |
| Pin produk 12 | PB0 — General purpose I/O / SPI chip select |
| Pin produk 13 | PB1 — General purpose I/O / SPI clock |
| Pin produk 14 | PB2 — General purpose I/O / SPI master out |
| Pin produk 15 | PB3 — General purpose I/O / SPI master in |
| Pin produk 16 | PB4 — General purpose I/O / I2C clock |
| Pin produk 17 | PB5 — General purpose I/O / I2C data |
| Pin produk 18 | VSS — Ground |
| Pin produk 19 | VDD — Power supply |
| Pin produk 20 | PC0 — General purpose I/O / USART TX |
| Pin produk 21 | PC1 — General purpose I/O / USART RX |
| Pin produk 22 | PC2 — General purpose I/O / CAN TX |
| Pin produk 23 | PC3 — General purpose I/O / CAN RX |
| Pin produk 24 | PC4 — General purpose I/O / LIN TX |
| Pin produk 25 | PC5 — General purpose I/O / LIN RX |
| Pin produk 26 | PC6 — General purpose I/O / PWM output |
| Pin produk 27 | PC7 — General purpose I/O / PWM output |
| Pin produk 28 | PD0 — General purpose I/O / PWM output |
| Pin produk 29 | PD1 — General purpose I/O / PWM output |
| Pin produk 30 | PD2 — General purpose I/O / PWM output |
| Pin produk 31 | PD3 — General purpose I/O / PWM output |
| Pin produk 32 | VSS — Ground |
Aplikasi Umum
STM8AF5266TCY cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk STM8AF5266TCY — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- Automotive-grade qualification with wide voltage range (vsSTM8AF5266TCX)
- Integrated true data EEPROM (vsSTM8AF52A9TCY)
- Cost-effective 64 Kbytes Flash option (vsSTM8AF5286TCY)
Catatan Desain
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.
Informasi Konformitas
Automotive-grade MCU qualified per AEC-Q100. RoHS and REACH compliant per STMicroelectronics product page.
