Overview
The STM8AF52A8TAY is a high-performance, 8-bit microcontroller from STMicroelectronics, specifically designed for automotive applications. It belongs to the STM8A family, known for its robustness, performance, and cost-effectiveness. This microcontroller features a CAN interface and is part of the high-density STM8A devices, offering a range of benefits including reduced system cost, enhanced performance, short development cycles, and product longevity. The device operates within a supply voltage range of 3.3 V to 5.5 V and is qualified to AEC-Q100 grade 0, ensuring reliability in harsh automotive environments.
Key Specifications
| Specification | Details |
|---|---|
| Core | Advanced STM8A core with Harvard architecture and 3-stage pipeline |
| Max CPU Frequency | 24 MHz |
| Program Memory | 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, internal 16 MHz RC and 128 kHz RC oscillators, clock security system |
| Reset and Supply Management | Wait/auto-wakeup/Halt low-power modes, low consumption power-on and power-down reset |
| 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 with LIN master mode, LINUART 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 Temperature | Up to 150 °C |
| Package | LQFP 48 7x7x1.4 mm |
Key Features
- AEC-Q10x qualified for automotive applications
- Integrated true data EEPROM with up to 300 k write/erase cycles
- High system integration level with internal clock oscillators, watchdog, and brown-out reset
- Enhanced performance with 20 MIPS at 24 MHz CPU clock frequency
- Robust I/O design, immune against current injection
- High speed 1 Mbit/s CAN 2.0B interface and LINUART LIN 2.2 compliant
- SPI interface up to 10 Mbit/s and I2C interface up to 400 Kbit/s
- 10-bit ADC with up to 16 multiplexed channels
- Short development cycles due to application scalability across a common family product architecture
Applications
The STM8AF52A8TAY microcontroller is designed for various automotive applications, including engine control units, transmission control units, and body control modules. Its robustness and high performance make it suitable for use in harsh automotive environments. Additionally, it can be used in other industrial control systems that require high reliability and advanced communication interfaces.
Q & A
- What is the maximum CPU frequency of the STM8AF52A8TAY?
The maximum CPU frequency is 24 MHz. - What type of memory does the STM8AF52A8TAY have?
The device has 128 Kbyte Flash program memory, up to 2 Kbyte true data EEPROM, and 6 Kbyte RAM. - What communication interfaces are available on the STM8AF52A8TAY?
The device features a CAN 2.0B interface, USART with LIN master mode, LINUART LIN 2.2 compliant, SPI interface up to 10 Mbit/s, and I2C interface up to 400 Kbit/s. - What is the operating temperature range of the STM8AF52A8TAY?
The operating temperature range is up to 150 °C. - Is the STM8AF52A8TAY qualified for automotive applications?
Yes, it is AEC-Q10x qualified for automotive applications. - What is the package type of the STM8AF52A8TAY?
The package type is LQFP 48 7x7x1.4 mm. - Does the STM8AF52A8TAY have any power-saving features?
Yes, it has wait/auto-wakeup/Halt low-power modes and low consumption power-on and power-down reset. - How many external interrupts does the STM8AF52A8TAY support?
It supports up to 37 external interrupts on 5 vectors. - What is the resolution of the ADC on the STM8AF52A8TAY?
The ADC has a 10-bit resolution with 2 LSB TUE and 1 LSB linearity. - Is the STM8AF52A8TAY supported by development tools?
Yes, it is supported by tools including STVD/STVP development environment, the STice emulator, and low-cost, third-party in-circuit debugging tools.
