Overview
The STM8AF52AATAY is an automotive 8-bit microcontroller from STMicroelectronics, part of the STM8AF52 series. This microcontroller is designed to offer high performance, robustness, and reduced system cost. It features a Harvard architecture core with a 3-stage pipeline, achieving up to 24 MHz CPU clock frequency and 20 MIPS performance. The device includes integrated true data EEPROM, internal clock oscillators, watchdog, and brown-out reset, which enhance system integration and reliability. The STM8AF52AATAY is AEC-Q100 grade 0 qualified and operates within a temperature range of up to 150 °C, making it suitable for demanding automotive applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Advanced STM8A core with Harvard architecture and 3-stage pipeline |
| Max CPU Frequency | 24 MHz |
| Program Memory | 32 to 128 Kbyte Flash program; data retention 20 years at 55 °C |
| Data Memory | Up to 2 Kbyte true data EEPROM; endurance 300 k cycles |
| RAM | 6 Kbyte |
| Clock Management | Low-power crystal resonator oscillator with external clock input, internal 16 MHz RC and 128 kHz RC oscillators |
| Reset and Supply Management | Wait/auto-wakeup/Halt low-power modes with user-definable clock gating |
| Interrupt Management | Nested interrupt controller with 32 vectors, up to 37 external interrupts on 5 vectors |
| Timers | 2 general purpose 16-bit timers, advanced control timer, 8-bit AR basic timer, auto-wakeup timer, window and independent watchdog timers |
| I/Os | Up to 68 user pins (11 high sink I/Os), highly robust I/O design |
| Communication Interfaces | CAN 2.0B interface, USART, LIN 2.2 compliant, SPI interface up to 10 Mbit/s, I2C interface up to 400 Kbit/s |
| Analog to Digital Converter (ADC) | 10-bit resolution, 2 LSB TUE, 1 LSB linearity, up to 16 multiplexed channels |
| Operating Voltage | 3.3 V to 5.5 V |
| Operating Temperature | Up to 150 °C |
Key Features
- AEC-Q100 grade 0 qualified for automotive applications
- High system integration with internal clock oscillators, watchdog, and brown-out reset
- Integrated true data EEPROM with up to 300 k write/erase cycles
- Robust I/O design immune against current injection
- Advanced control timer with dead-time insertion and flexible synchronization
- High-speed communication interfaces including CAN 2.0B, USART, LIN 2.2, SPI, and I2C
- 10-bit ADC with up to 16 multiplexed channels
- Low-power modes with user-definable clock gating
- Nested interrupt controller with 32 vectors and up to 37 external interrupts
Applications
The STM8AF52AATAY is primarily designed for automotive applications, including but not limited to:
- Automotive control units
- Sensor and actuator control
- Body electronics
- Powertrain control
- Infotainment systems
Q & A
- What is the maximum CPU frequency of the STM8AF52AATAY?
The maximum CPU frequency is 24 MHz.
- How much program memory does the STM8AF52AATAY have?
The program memory ranges from 32 Kbyte to 128 Kbyte Flash.
- What is the endurance of the true data EEPROM in the STM8AF52AATAY?
The true data EEPROM has an endurance of up to 300 k write/erase cycles.
- What communication interfaces are available on the STM8AF52AATAY?
The device features CAN 2.0B, USART, LIN 2.2, SPI, and I2C interfaces.
- What is the resolution of the ADC in the STM8AF52AATAY?
The ADC has a 10-bit resolution with 2 LSB TUE and 1 LSB linearity.
- What is the operating temperature range of the STM8AF52AATAY?
The operating temperature range is up to 150 °C.
- Is the STM8AF52AATAY AEC-Q100 qualified?
Yes, it is AEC-Q100 grade 0 qualified.
- What are the low-power modes available in the STM8AF52AATAY?
The device supports wait/auto-wakeup/Halt low-power modes with user-definable clock gating.
- How many external interrupts can the STM8AF52AATAY handle?
It can handle up to 37 external interrupts on 5 vectors.
- What is the operating voltage range of the STM8AF52AATAY?
The operating voltage range is from 3.3 V to 5.5 V.
