Overview
The STM8S903K3T6CTR 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 cost-effectiveness. 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 8 Kbyte Flash program memory, 1 Kbyte RAM, and 640 bytes of true data EEPROM, which supports up to 300 k write/erase cycles. The integrated peripherals and robust I/O design make it suitable for a variety of applications.
Key Specifications
| Parameter | Specification |
|---|---|
| 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), 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) |
| 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 | LQFP 32 (7x7x1.4 mm) |
| Operating Temperature | -40°C to 125°C |
Key Features
- Advanced Core: 16 MHz STM8 core with Harvard architecture and 3-stage pipeline.
- Memory: 8 Kbyte Flash program memory, 1 Kbyte RAM, and 640 bytes true data EEPROM.
- Clock Management: Flexible clock control with 4 master clock sources, clock security system, and low-power modes.
- 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, and I2C up to 400 kbit/s.
- Analog to Digital Converter (ADC): 10-bit ADC with up to 7 multiplexed channels and 1 internal channel.
- I/O Design: Highly robust I/O design, immune against current injection, with up to 28 I/Os including 21 high sink outputs.
- Power Management: Low-power modes (wait, active-halt, halt), switch-off peripheral clocks individually, and permanently active, low-consumption power-on and power-down reset.
- Interrupt Management: Nested interrupt controller with 32 interrupts and up to 28 external interrupts on 7 vectors.
Applications
The STM8S903K3T6CTR microcontroller is suitable for a wide range of applications due to its robust features and low system cost. Some typical applications include:
- Industrial control systems
- Automotive systems
- Consumer electronics
- Medical devices
- Smart home devices
- IoT devices
Q & A
- What is the core frequency of the STM8S903K3T6CTR microcontroller?
The core frequency is 16 MHz.
- How much program memory does the STM8S903K3T6CTR have?
The device has 8 Kbyte Flash program memory.
- What types of timers are available on the STM8S903K3T6CTR?
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 STM8S903K3T6CTR?
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 STM8S903K3T6CTR?
The ADC is 10-bit with ±1 LSB accuracy.
- How many I/Os are available on the STM8S903K3T6CTR?
Up to 28 I/Os are available, including 21 high sink outputs.
- What are the operating voltage and temperature ranges for the STM8S903K3T6CTR?
The operating voltage range is 2.95 to 5.5 V, and the operating temperature range is -40°C to 125°C.
- Does the STM8S903K3T6CTR support low-power modes?
Yes, it supports low-power modes such as wait, active-halt, and halt.
- What is the endurance of the EEPROM on the STM8S903K3T6CTR?
The EEPROM has an endurance of up to 300 k write/erase cycles.
- Is the STM8S903K3T6CTR RoHS compliant?
Yes, the device is RoHS compliant.
