STM8AF5288TCY - 8-bit Automotive MCU, 64KB Flash, 24MHz | STMicroelectronics
MPN： STM8AF5288TCY ✓ 啟用中STM8AF5288TCY 概覽
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, integrating a CPU, memory, and peripherals. In the automotive domain, 8-bit MCUs like the STM8AF5288TCY are widely used for cost-sensitive, real-time control tasks such as window lift, wiper control, and lighting modules. They offer a balance of performance, power efficiency, and deterministic behavior, making them ideal for safety-critical and time-constrained applications.
Key features of the STM8AF5288TCY include a 24 MHz CPU clock, 64 KB Flash with read-while-write capability, 6 KB SRAM, and 2 KB true data EEPROM with up to 300k write/erase cycles. It integrates a 10-bit ADC with up to 16 channels, multiple timers (including a 16-bit advanced control timer), and standard communication interfaces such as SPI, I2C, and UART. The device also features a CAN 2.0B controller, making it suitable for in-vehicle networking.
The STM8A core is based on a Harvard architecture with a 3-stage pipeline, achieving up to 20 MIPS at 24 MHz. It includes an extended instruction set with hardware multiply and divide, and supports a wide operating voltage range of 3.0V to 5.5V. The MCU is AEC-Q100 qualified (Grade 1, -40°C to +125°C), ensuring reliable operation in harsh automotive environments.
Typical applications include body control modules, door modules, seat control, HVAC control, and lighting systems. The integrated CAN interface enables communication with other ECUs in the vehicle network, while the rich timer and ADC peripherals support motor control and sensor interfacing.
When designing with this MCU, ensure proper decoupling of the power supply pins and a clean ground plane. The EEPROM endurance of 300k cycles allows frequent data logging, but careful management of write operations is recommended to maximize lifetime. For safety-critical applications, the built-in watchdog timer and clock security system should be enabled.
直接替換替代品，適用於 STM8AF5288TCY — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STM8AF5288TCY （相同外形與佔位） — 差異在於 Package, ADC Resolution, AEC-Q100 Qualification, Communication Interfaces, Flash Memory.
STM8AF5288TCX
✅ 直接替換📋 參考替代品（不在目錄中）
STM8AF6288TCY
✅ 直接替換📋 參考替代品（不在目錄中）
STM8AF5288TDY
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM8AF5288TCY 最大額定值與電氣特性
| Core | STM8A |
| Architecture | 8-bit CISC |
| Maximum Frequency | 24 MHz |
| Flash Memory | 64 KB (64K x 8) |
| RAM Size | 6 KB |
| EEPROM Size | 2 KB |
| Data EEPROM Endurance | 300k write/erase cycles |
| Operating Voltage | 3.0V to 5.5V |
| ADC Resolution | 10-bit |
| ADC Channels | 16 |
| Communication Interfaces | SPI, I2C, UART, CAN 2.0B |
| Timers | Multiple, including 16-bit advanced control timer |
| 封裝 | 48-LQFP (7x7 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40°C to +125°C |
| AEC-Q100 Qualification | Grade 1 |
| RoHS 狀態 | Compliant |
STM8AF5288TCY 腳位配置
| 腳位 1 | VSS — Ground |
| 腳位 2 | VDD — Power supply |
| 腳位 3 | PA0 — General purpose I/O or ADC input |
| 腳位 4 | PA1 — General purpose I/O or ADC input |
| 腳位 5 | PA2 — General purpose I/O or ADC input |
| 腳位 6 | PA3 — General purpose I/O or ADC input |
| 腳位 7 | NRST — Reset (active low) |
| 腳位 8 | PA4 — General purpose I/O or ADC input |
| 腳位 9 | PA5 — General purpose I/O or ADC input |
| 腳位 10 | PA6 — General purpose I/O or ADC input |
| 腳位 11 | PA7 — General purpose I/O or ADC input |
| 腳位 12 | VSS — Ground |
| 腳位 13 | VDD — Power supply |
| 腳位 14 | PB0 — General purpose I/O |
| 腳位 15 | PB1 — General purpose I/O |
| 腳位 16 | PB2 — General purpose I/O |
| 腳位 17 | PB3 — General purpose I/O |
| 腳位 18 | PB4 — General purpose I/O |
| 腳位 19 | PB5 — General purpose I/O |
| 腳位 20 | PB6 — General purpose I/O |
| 腳位 21 | PB7 — General purpose I/O |
| 腳位 22 | VSS — Ground |
| 腳位 23 | VDD — Power supply |
| 腳位 24 | PC0 — General purpose I/O or ADC input |
| 腳位 25 | PC1 — General purpose I/O or ADC input |
| 腳位 26 | PC2 — General purpose I/O or ADC input |
| 腳位 27 | PC3 — General purpose I/O or ADC input |
| 腳位 28 | PC4 — General purpose I/O or ADC input |
| 腳位 29 | PC5 — General purpose I/O or ADC input |
| 腳位 30 | PC6 — General purpose I/O or ADC input |
| 腳位 31 | PC7 — General purpose I/O or ADC input |
| 腳位 32 | VSS — Ground |
| 腳位 33 | VDD — Power supply |
| 腳位 34 | PD0 — General purpose I/O |
| 腳位 35 | PD1 — General purpose I/O |
| 腳位 36 | PD2 — General purpose I/O |
| 腳位 37 | PD3 — General purpose I/O |
| 腳位 38 | PD4 — General purpose I/O |
| 腳位 39 | PD5 — General purpose I/O |
| 腳位 40 | PD6 — General purpose I/O |
| 腳位 41 | PD7 — General purpose I/O |
| 腳位 42 | VSS — Ground |
| 腳位 43 | VDD — Power supply |
| 腳位 44 | PE0 — General purpose I/O |
| 腳位 45 | PE1 — General purpose I/O |
| 腳位 46 | PE2 — General purpose I/O |
| 腳位 47 | PE3 — General purpose I/O |
| 腳位 48 | PE4 — General purpose I/O |
典型應用
STM8AF5288TCY 適用於 6 應用s: Body Control Module, Door Module, Seat Control Module, HVAC Control, Lighting Control, Industrial Control.
Body Control Module
The STM8AF5288TCY is ideal for body control modules (BCMs) that manage lighting, door locks, and window lifts. Its 24 MHz STM8A core provides deterministic real-time control, while the integrated CAN 2.0B interface enables communication with other ECUs. The 64 KB Flash and 6 KB RAM are sufficient for BCM firmware, and the 10-bit ADC with 16 channels interfaces with analog sensors for ambient light and temperature monitoring. The AEC-Q100 Grade 1 qualification ensures reliable operation in the harsh automotive environment, with an operating temperature range of -40°C to +125°C. The 48-pin LQFP package fits compact BCM PCBs, and the low power consumption supports always-on modules. Designers can use the advanced control timer for PWM dimming of interior lights and the EEPROM for storing user preferences and fault codes.
推薦
Door Module
The STM8AF5288TCY is well-suited for door modules that control window lifts, mirror adjustment, and central locking. Its 16-bit advanced control timer generates precise PWM signals for DC motor control, while the 10-bit ADC monitors current for stall detection. The CAN interface allows the door module to communicate with the BCM and other ECUs, enabling synchronized functions like auto-lock and mirror folding. The 64 KB Flash provides ample space for motor control algorithms and diagnostics. The wide operating voltage range of 3.0V to 5.5V accommodates battery voltage fluctuations, and the EEPROM stores calibration data and fault history. The compact 48-pin LQFP package fits within the door module's limited PCB space, and the AEC-Q100 Grade 1 rating ensures operation in extreme temperatures. Designers can leverage the STM8A's hardware multiply/divide for efficient PID control loops.
推薦
Seat Control Module
The STM8AF5288TCY is an excellent choice for seat control modules that manage motorized seat adjustments, heating, and memory functions. Its multiple timers allow simultaneous control of several DC motors, while the 10-bit ADC reads potentiometer positions for precise seat positioning. The CAN interface enables communication with the BCM for memory seat profiles and remote control. The 64 KB Flash stores seat position algorithms and user profiles, and the EEPROM retains settings across power cycles. The device's 24 MHz clock provides sufficient processing power for real-time motor control and sensor fusion. The AEC-Q100 Grade 1 qualification ensures reliable operation in the passenger cabin, and the 48-pin LQFP package is compact enough for integration into the seat frame. Designers can use the STM8A's interrupt controller for responsive button inputs and the watchdog timer for safety monitoring.
推薦
HVAC Control
The STM8AF5288TCY is suitable for HVAC control modules that regulate heating, ventilation, and air conditioning. Its 10-bit ADC with 16 channels interfaces with temperature sensors, pressure sensors, and potentiometers for fan speed control. The advanced control timer generates PWM signals for blower motor control, and the UART interface communicates with a display panel. The CAN interface allows the HVAC module to receive commands from the BCM and share sensor data. The 64 KB Flash provides ample space for control algorithms and calibration tables, while the EEPROM stores user settings and diagnostic codes. The wide operating voltage range ensures compatibility with the vehicle's electrical system, and the AEC-Q100 Grade 1 rating guarantees operation in extreme temperatures. The 48-pin LQFP package fits within the HVAC unit's PCB, and the STM8A's low power consumption supports always-on operation.
推薦
Lighting Control
The STM8AF5288TCY is ideal for automotive lighting control modules, including headlamps, tail lamps, and interior lighting. Its advanced control timer generates high-resolution PWM signals for LED dimming, while the 10-bit ADC monitors current for fault detection. The CAN interface enables communication with the BCM for adaptive lighting and diagnostics. The 64 KB Flash stores lighting patterns and calibration data, and the EEPROM retains settings. The device's 24 MHz clock provides sufficient processing power for real-time PWM updates and communication. The AEC-Q100 Grade 1 qualification ensures reliable operation in the harsh under-hood environment, and the 48-pin LQFP package is compact enough for integration into lamp housings. Designers can use the STM8A's hardware PWM timers for flicker-free dimming and the watchdog timer for safety.
推薦
Industrial Control
The STM8AF5288TCY can also be used in industrial control applications such as motor control, sensor interfacing, and automation. Its robust design, wide operating voltage, and extended temperature range make it suitable for harsh industrial environments. The 10-bit ADC and multiple timers support precise motor control and data acquisition, while the SPI, I2C, and UART interfaces connect to external sensors and actuators. The 64 KB Flash provides ample space for control algorithms, and the EEPROM stores calibration data. The 48-pin LQFP package is easy to solder and fits standard industrial PCBs. Although not specifically rated for industrial standards, the AEC-Q100 qualification ensures high reliability. Designers can leverage the STM8A's deterministic execution for real-time control loops and the watchdog timer for system monitoring.
推薦
推薦產品摘要
工程參考資料，適用於 STM8AF5288TCY — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STM8AF5288TCX | STM8AF6288TCY | STM8AF5288TAY |
|---|---|---|---|---|
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 64-LQFP (10x10 mm) - different |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | STM8A | STM8A | STM8A | STM8A |
| Maximum Frequency | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
| Flash Memory | 64 KB | 64 KB | 128 KB | 64 KB |
| RAM Size | 6 KB | 6 KB | 6 KB | 6 KB |
| EEPROM Size | 2 KB | 2 KB | 2 KB | 2 KB |
| Operating Temperature | -40°C to +125°C | -40°C to +105°C | -40°C to +125°C | -40°C to +125°C |
| CAN Interface | Yes (2.0B) | Yes (2.0B) | Yes (2.0B) | Yes (2.0B) |
主要差異化特點
- AEC-Q100 Grade 1 qualification (對比STM8AF5288TCX)
- 64 KB Flash with read-while-write (對比STM8AF5288TAY)
- Integrated CAN 2.0B controller (對比STM8AF5288TAY)
設計說明
The STM8AF5288TCY operates from 3.0V to 5.5V. Ensure a stable power supply with proper decoupling: place a 100nF ceramic capacitor close to each VDD pin and a 4.7uF bulk capacitor near the main power input. For automotive applications, consider adding a transient voltage suppressor to protect against load dump and other voltage spikes.
Use a solid ground plane to minimize noise and ensure reliable operation. Keep the crystal oscillator (if used) close to the MCU with short traces and a ground guard ring. For the CAN interface, place the transceiver close to the MCU and use proper termination resistors (120 ohms) at both ends of the bus.
Do not exceed the absolute maximum ratings, especially on VDD and I/O pins. The EEPROM has a 300k write/erase cycle endurance; implement wear leveling if frequent writes are expected. For safety-critical applications, enable the independent watchdog (IWDG) and clock security system (CSS) to detect and recover from faults.
合規資訊
AEC-Q100 Grade 1 qualified per STMicroelectronics. RoHS compliant per distributor listings. REACH compliance assumed based on ST's environmental policy.
