Overview
The STM8S903K3T3C is a member of the STM8S access line 8-bit microcontrollers produced by 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
| Parameter | Description |
|---|---|
| Core Frequency | 16 MHz |
| Core Architecture | Harvard architecture with 3-stage pipeline |
| 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 |
| Power Management | Low-power modes (wait, active-halt, halt), switch-off peripheral clocks individually, permanently active low-consumption power-on and power-down reset |
| Interrupts | Nested interrupt controller with 32 interrupts, up to 28 external interrupts on 7 vectors |
| Timers | Advanced control timer (16-bit, 4 CAPCOM channels), 16-bit general purpose timer, 8-bit 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 |
| ADC | 10-bit, ±1 LSB 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 |
| Package Options | LQFP 32 7x7x1.4 mm, UFQFPN 32 5x5x0.55 mm |
Key Features
- Advanced Core: 16 MHz STM8 core with Harvard architecture and 3-stage pipeline, extended instruction set.
- Memory: 8 Kbyte Flash program memory, 640 byte true data EEPROM, 1 Kbyte RAM.
- Clock and Power Management: Flexible clock control with 4 master clock sources, low-power modes, and clock security system.
- Timers: Advanced control timer, 16-bit general purpose timer, 8-bit 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.
- 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.
- Unique ID: 96-bit unique key for each device.
Applications
The STM8S903K3T3C microcontroller is suitable for a variety of applications due to its robust features and low power consumption. Some common applications include:
- Industrial control systems
- Automotive systems
- Consumer electronics
- Medical devices
- IoT devices
- Smart home devices
Q & A
- What is the core frequency of the STM8S903K3T3C microcontroller?
The core frequency is 16 MHz.
- What types of memory does the STM8S903K3T3C have?
The device has 8 Kbyte Flash program memory, 640 byte true data EEPROM, and 1 Kbyte RAM.
- What are the operating voltage ranges for the STM8S903K3T3C?
The operating voltage ranges from 2.95 to 5.5 V.
- What communication interfaces are available on the STM8S903K3T3C?
The device includes UART, SPI up to 8 Mbit/s, and I²C up to 400 kbit/s.
- Does the STM8S903K3T3C have any power-saving features?
Yes, it includes low-power modes (wait, active-halt, halt) and the ability to switch off peripheral clocks individually.
- What types of timers are available on the STM8S903K3T3C?
The device features an advanced control timer, a 16-bit general purpose timer, an 8-bit basic timer, an auto wake-up timer, a window watchdog, and independent watchdog timers.
- How many I/Os does the STM8S903K3T3C have?
The device has up to 28 I/Os on a 32-pin package, including 21 high sink outputs.
- Is the STM8S903K3T3C RoHS compliant?
Yes, the device is RoHS compliant with an Ecopack2 grade.
- What is the unique feature of each STM8S903K3T3C device?
Each device has a 96-bit unique key.
- What are the package options for the STM8S903K3T3C?
The device is available in LQFP 32 7x7x1.4 mm and UFQFPN 32 5x5x0.55 mm packages.
