Overview
The STM8S903K3U6TR is a member of the STM8S access line 8-bit microcontrollers from STMicroelectronics. This microcontroller is designed to offer a balance of performance, robustness, and reduced system cost. It features a 16 MHz advanced STM8 core with Harvard architecture and a 3-stage pipeline, along with an extended instruction set. The device includes integrated true data EEPROM, multiple timers, and various communication interfaces, making it suitable for a wide range of applications.
Key Specifications
| Specification | Details |
|---|---|
| Core Frequency | 16 MHz |
| Program Memory | 8 Kbyte Flash |
| Data Memory | 1 Kbyte RAM, 640 bytes true data EEPROM |
| 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 |
| Package | UFQFPN 32 5x5x0.55 mm |
| Operating Temperature | -40°C to 125°C |
Key Features
- 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline
- Extended instruction set
- Integrated true data EEPROM with 300 k write/erase cycles
- Flexible clock control with four master clock sources
- Low-power modes (wait, active-halt, halt) and switch-off peripheral clocks individually
- Nested interrupt controller with 32 interrupts and up to 28 external interrupts on 7 vectors
- Advanced control timer, 16-bit general purpose timer, and 8-bit basic timer
- UART, SPI, and I2C communication interfaces
- 10-bit ADC with up to 7 multiplexed channels and internal reference voltage measurement
- Highly robust I/O design, immune against current injection
- 96-bit unique key for each device
Applications
The STM8S903K3U6TR is versatile and can be used in various applications, including:
- Industrial control systems
- Automotive systems
- Consumer electronics
- Medical devices
- Smart home devices
- IoT applications
Q & A
- What is the core frequency of the STM8S903K3U6TR?
The core frequency is 16 MHz. - How much program memory does the STM8S903K3U6TR have?
The device has 8 Kbyte Flash program memory. - What are the operating voltage ranges for the STM8S903K3U6TR?
The operating voltage ranges from 2.95 to 5.5 V. - What types of timers are available on the STM8S903K3U6TR?
The device includes an advanced control timer (16-bit), a 16-bit general purpose timer, and an 8-bit basic timer with an 8-bit prescaler. - What communication interfaces are supported by the STM8S903K3U6TR?
The device supports UART, SPI (up to 8 Mbit/s), and I2C (up to 400 kbit/s) interfaces. - What is the resolution of the ADC on the STM8S903K3U6TR?
The ADC is a 10-bit, ±1 LSB ADC with up to 7 multiplexed channels + 1 internal channel. - How many I/Os are available on the STM8S903K3U6TR?
Up to 28 I/Os are available on a 32-pin package, including 21 high sink outputs. - What is the package type of the STM8S903K3U6TR?
The package type is UFQFPN 32 5x5x0.55 mm. - What are the operating temperature ranges for the STM8S903K3U6TR?
The operating temperature ranges from -40°C to 125°C. - Does the STM8S903K3U6TR have any power-saving features?
Yes, it includes low-power modes (wait, active-halt, halt) and the ability to switch off peripheral clocks individually.
