Overview
The STM8AF6246UAX is an automotive 8-bit microcontroller from STMicroelectronics, part of the STM8A family. This device is designed to offer a balance of performance, robustness, and cost-effectiveness, making it suitable for a variety of automotive applications. The STM8AF6246UAX features an advanced STM8A core with Harvard architecture and a 3-stage pipeline, ensuring high performance with a clock frequency of up to 16 MHz. It also includes integrated true data EEPROM, multiple timers, and various communication interfaces such as LIN, SPI, and I2C. The microcontroller is AEC-Q100 rev G qualified, ensuring reliability in harsh automotive environments.
Key Specifications
| Specification | Details |
|---|---|
| Core | Advanced STM8A core with Harvard architecture and 3-stage pipeline |
| Max CPU Frequency | 16 MHz |
| Flash Program Memory | 16 Kbytes |
| Data Memory | 0.5 to 1 Kbyte true data EEPROM; endurance 300 kcycle |
| RAM | 2 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 34 external interrupts on 5 vectors |
| Timers | Up to 2 general purpose 16-bit PWM timers, advanced control timer, 8-bit AR basic timer, auto-wakeup timer, window and independent watchdog timers |
| Communication Interfaces | LIN 2.2 compliant, SPI interface up to 8 Mbit/s, I2C interface up to 400 Kbit/s |
| Analog-to-Digital Converter (ADC) | 10-bit accuracy, up to 10 multiplexed channels with individual data buffer |
| I/Os | Up to 38 user pins including 10 HS I/Os, highly robust I/O design |
| Operating Temperature | Up to 150 °C |
| Package | LQFP48, LQFP32, VFQFPN32 (5x5 mm) |
Key Features
- AEC-Q10x qualified for automotive applications
- Advanced STM8A core with Harvard architecture and 3-stage pipeline, achieving 10 MIPS at 16 MHz
- Integrated true data EEPROM with 300 k write/erase cycles
- Multiple timers including general purpose 16-bit PWM timers and advanced control timer
- LIN 2.2 compliant, SPI, and I2C communication interfaces
- 10-bit ADC with up to 10 multiplexed channels
- Highly robust I/O design, immune against current injection
- Low-power modes with user-definable clock gating and low consumption power-on and power-down reset
- Nested interrupt controller with 32 vectors and up to 34 external interrupts
Applications
The STM8AF6246UAX is designed for various automotive applications, including but not limited to:
- Automotive body control modules
- Infotainment systems
- Powertrain control units
- Safety and security systems
- Automotive sensors and actuators
Q & A
- What is the maximum CPU frequency of the STM8AF6246UAX?
The maximum CPU frequency is 16 MHz. - How much Flash program memory does the STM8AF6246UAX have?
The STM8AF6246UAX has 16 Kbytes of Flash program memory. - What is the endurance of the integrated true data EEPROM?
The integrated true data EEPROM has an endurance of 300 k write/erase cycles. - What communication interfaces are available on the STM8AF6246UAX?
The device features LIN 2.2 compliant, SPI, and I2C communication interfaces. - What is the accuracy of the ADC on the STM8AF6246UAX?
The ADC has a 10-bit accuracy with 2LSB TUE accuracy and linearity. - What is the operating temperature range of the STM8AF6246UAX?
The operating temperature range is up to 150 °C. - Is the STM8AF6246UAX AEC-Q100 qualified?
Yes, the STM8AF6246UAX is AEC-Q100 rev G qualified. - What types of timers are available on the STM8AF6246UAX?
The device includes general purpose 16-bit PWM timers, an advanced control timer, an 8-bit AR basic timer, an auto-wakeup timer, and window and independent watchdog timers. - How many user pins are available on the STM8AF6246UAX?
Up to 38 user pins are available, including 10 HS I/Os. - What is the purpose of the clock security system on the STM8AF6246UAX?
The clock security system includes a clock monitor to ensure stable clock operation.
