Overview
The STM8S903K3T6C is an 8-bit microcontroller from STMicroelectronics, part of the STM8S access line. This microcontroller is designed to offer a balance of performance, robustness, and cost-effectiveness. It features an advanced 16 MHz 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. The STM8S903K3T6C is particularly beneficial for systems requiring low power consumption, high system integration, and robust I/O design.
Key Specifications
| Parameter | Specification |
|---|---|
| Core Frequency | 16 MHz |
| Program Memory | 8 Kbyte Flash |
| Data Memory | 1 Kbyte RAM, 640 byte 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), General purpose timer (16-bit), Basic timer (8-bit), Auto wake-up timer, Window watchdog and independent watchdog timers |
| Communication Interfaces | UART, SPI (up to 8 Mbit/s), I²C (up to 400 kbit/s) |
| Analog to Digital Converter (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 |
| Unique ID | 96-bit unique key for each device |
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 byte true data EEPROM with 300 k write/erase cycles.
- Clock and Power Management: Flexible clock control with 4 master clock sources, low-power modes (wait, active-halt, halt), and switch-off peripheral clocks individually.
- Timers and Watchdogs: Advanced control timer, general purpose timer, basic timer, auto wake-up timer, window watchdog, and independent watchdog timers.
- Communication Interfaces: UART with clock output, SPI up to 8 Mbit/s, I²C up to 400 kbit/s.
- Analog to Digital Converter (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 STM8S903K3T6C is suitable for a variety of applications that require low power consumption, high system integration, and robust performance. These include:
- Industrial control systems
- Automotive systems
- Consumer electronics
- Medical devices
- Smart home devices
- IoT applications
Its integrated features and low power modes make it an ideal choice for battery-powered devices and applications requiring efficient energy management.
Q & A
- What is the core frequency of the STM8S903K3T6C?
The core frequency is 16 MHz.
- How much program memory does the STM8S903K3T6C have?
The device has 8 Kbyte Flash program memory.
- What are the operating voltage ranges for the STM8S903K3T6C?
The operating voltage ranges from 2.95 to 5.5 V.
- What types of timers are available on the STM8S903K3T6C?
The device includes an advanced control timer, a general purpose timer, a basic timer, an auto wake-up timer, and window and independent watchdog timers.
- What communication interfaces are supported by the STM8S903K3T6C?
The device supports UART, SPI up to 8 Mbit/s, and I²C up to 400 kbit/s.
- What is the resolution of the ADC on the STM8S903K3T6C?
The ADC is a 10-bit ADC with up to 7 multiplexed channels + 1 internal channel.
- How many I/Os are available on the STM8S903K3T6C?
Up to 28 I/Os are available on a 32-pin package, including 21 high sink outputs.
- Does the STM8S903K3T6C have any power management features?
Yes, it includes low-power modes (wait, active-halt, halt) and the ability to switch off peripheral clocks individually.
- What is the endurance of the EEPROM on the STM8S903K3T6C?
The EEPROM has an endurance of 300 k write/erase cycles.
- Is the STM8S903K3T6C suitable for battery-powered devices?
Yes, its low power modes and efficient energy management make it suitable for battery-powered devices.
