Overview
The STM8S903K3B6 is a member of the STM8S access line 8-bit microcontrollers from STMicroelectronics. These microcontrollers are designed to offer a balance of performance, robustness, and cost-effectiveness. They feature a 16 MHz advanced STM8 core with Harvard architecture and a 3-stage pipeline, along with an extended instruction set. The devices are equipped with 8 Kbyte Flash program memory, 1 Kbyte RAM, and 640 bytes of true data EEPROM, making them suitable for a variety of applications requiring efficient data storage and processing.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline |
| Operating Frequency | Up to 16 MHz |
| Program Memory | 8 Kbyte Flash; data retention 20 years at 55 °C after 10 kcycle |
| Data Memory | 640 byte true data EEPROM; endurance 300 kcycle |
| RAM | 1 Kbyte |
| Operating Voltage | 2.95 to 5.5 V |
| Clock Sources | Low power crystal resonator oscillator, external clock input, internal user-trimmable 16 MHz RC, internal low-power 128 kHz RC |
| Timers | Advanced control timer (16-bit, 4 CAPCOM channels), 16-bit general purpose timer, 8-bit basic timer with 8-bit prescaler |
| Communication Interfaces | UART, SPI up to 8 Mbit/s, I2C up to 400 kbit/s |
| ADC | 10-bit, ±1 LSB ADC with up to 7 multiplexed channels + 1 internal channel |
| I/Os | Up to 28 I/Os on a 32-pin package including 21 high sink outputs |
Key Features
- Advanced Core: 16 MHz STM8 core with Harvard architecture and 3-stage pipeline, extended instruction set.
- Memory: 8 Kbyte Flash program memory, 1 Kbyte RAM, 640 bytes true data EEPROM.
- Clock Management: Flexible clock control with 4 master clock sources, clock security system with clock monitor.
- Power Management: Low-power modes (wait, active-halt, halt), switch-off peripheral clocks individually, permanently active low-consumption power-on and power-down reset.
- Interrupt Management: Nested interrupt controller with 32 interrupts, up to 28 external interrupts on 7 vectors.
- Timers: Advanced control timer, 16-bit general purpose timer, 8-bit basic timer with 8-bit prescaler, auto wake-up timer, window watchdog and independent watchdog timers.
- Communication Interfaces: UART with clock output for synchronous operation, SPI interface up to 8 Mbit/s, I2C interface up to 400 kbit/s.
- ADC: 10-bit ADC with up to 7 multiplexed channels + 1 internal channel, scan mode and analog watchdog.
- I/Os: Up to 28 I/Os on a 32-pin package including 21 high sink outputs, highly robust I/O design immune against current injection.
- Unique ID: 96-bit unique key for each device.
Applications
The STM8S903K3B6 microcontroller is suitable for a wide range of applications, including:
- Industrial Control Systems: Due to its robust I/O design and various communication interfaces, it is ideal for industrial automation and control systems.
- Consumer Electronics: Its low power consumption and integrated peripherals make it a good choice for consumer electronics such as appliances and gadgets.
- Automotive Systems: The microcontroller's ability to operate in a wide voltage range and its robust design make it suitable for automotive applications.
- Medical Devices: The high reliability and precision of the STM8S903K3B6 make it a viable option for medical device applications.
- IoT Devices: Its low power modes and efficient communication interfaces are beneficial for Internet of Things (IoT) devices.
Q & A
- What is the operating frequency of the STM8S903K3B6 microcontroller?
The operating frequency of the STM8S903K3B6 microcontroller is up to 16 MHz.
- What types of memory does the STM8S903K3B6 have?
The STM8S903K3B6 has 8 Kbyte Flash program memory, 1 Kbyte RAM, and 640 bytes of true data EEPROM.
- What are the operating voltage ranges for the STM8S903K3B6?
The operating voltage range for the STM8S903K3B6 is 2.95 to 5.5 V.
- What communication interfaces are available on the STM8S903K3B6?
The STM8S903K3B6 features UART, SPI up to 8 Mbit/s, and I2C up to 400 kbit/s communication interfaces.
- Does the STM8S903K3B6 have any power management features?
Yes, the STM8S903K3B6 includes low-power modes (wait, active-halt, halt), switch-off peripheral clocks individually, and permanently active low-consumption power-on and power-down reset.
- What types of timers are available on the STM8S903K3B6?
The STM8S903K3B6 includes an advanced control timer, a 16-bit general purpose timer, an 8-bit basic timer with 8-bit prescaler, an auto wake-up timer, and window and independent watchdog timers.
- How many I/Os does the STM8S903K3B6 have?
The STM8S903K3B6 has up to 28 I/Os on a 32-pin package, including 21 high sink outputs.
- Is the STM8S903K3B6 robust against current injection?
Yes, the STM8S903K3B6 has a highly robust I/O design that is immune against current injection.
- Does the STM8S903K3B6 have a unique identifier?
Yes, each device has a 96-bit unique key.
- What are some common applications for the STM8S903K3B6?
The STM8S903K3B6 is suitable for industrial control systems, consumer electronics, automotive systems, medical devices, and IoT devices.
