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ST STM8S105K4T6C Mainstream 8-Bit 16MHz MCU With 16 Kbytes Flash And Integrated EEPROM

Shenzhen Mingjiada Electronics Co., Ltd., as a professional electronic component supplier, provides customers with ST's STM8S105K4T6C high-performance 8-bit microcontroller. This mainstream-level MCU, with its outstanding performance, rich feature set, and excellent cost-effectiveness, has found widespread application in industrial control, consumer electronics, home appliances, and automotive electronics.

【Product Overview and Core Features of the STM8S105K4T6C】

The STM8S105K4T6C is an 8-bit mainstream access line microcontroller unit belonging to the STM8S series. As a cost-effective embedded control solution, the STM8S105K4T6C integrates 16KB of flash program memory and 1KB of real-time data EEPROM, providing reliable storage support for various applications.

In terms of core architecture, the STM8S105K4T6C adopts an advanced 16MHz STM8 core, based on a Harvard architecture design and equipped with a 3-stage pipeline, significantly enhancing instruction execution efficiency. This architecture design enables the microcontroller to deliver outstanding processing performance while maintaining low power consumption, making it particularly suitable for control applications requiring real-time response.

The main technical specifications of the STM8S105K4T6C include:

Program memory: 16KB flash (some sources indicate a maximum of 32KB), with data retention for 20 years (after 10,000 erase/write cycles at 55°C)

Data memory: 1KB true data EEPROM with high durability of 300,000 erase/write cycles

RAM capacity: 2KB, providing ample space for temporary data storage

Operating voltage: Wide voltage range of 2.95V to 5.5V, suitable for various power supply environments

Operating temperature: Industrial-grade temperature range of -40°C to +85°C, ensuring reliable operation in harsh environments

STM8S105K4T6C offers a wide range of peripheral and interface functions:

The STM8S105K4T6C microcontroller integrates multiple peripheral interfaces, significantly simplifying system design and reducing BOM costs. These rich peripheral resources enable it to easily handle various embedded control requirements.

In terms of communication interfaces, the STM8S105K4T6C offers comprehensive connectivity options:

SPI interface: Supports data transfer rates up to 8 Mbit/s, ideal for high-speed peripheral connections

I2C interface: Supports communication speeds up to 400 kbit/s, compatible with SMBus/PMBus protocols

UART interface: Supports synchronous clock output, featuring SmartCard, IrDA, and LIN master mode functionality

LIN bus: Built-in LIN master controller simplifies automotive electronic network design

In terms of analogue functionality, the STM8S105K4T6C integrates:

10-bit ADC: ±1 LSB accuracy, up to 10 multiplexed input channels, supports scan mode and analogue watchdog functionality

Analogue comparator: Suitable for power monitoring or signal comparison applications

The STM8S105K4T6C also offers a rich variety of timer resources:

Advanced control timer: 16-bit resolution, 4 capture/compare channels, supports complementary output and dead-time insertion

General-purpose timer: 2 16-bit timers, providing a total of 5 capture/compare channels (IC, OC, or PWM mode)

Basic Timer: 8-bit resolution with an 8-bit prescaler, including an automatic wake-up function

Watchdog Timer: Dual protection with an independent watchdog and a window watchdog to enhance system reliability

The STM8S105K4T6C also boasts outstanding GPIO features:

Up to 38 I/O pins (in a 48-pin package), with 16 pins capable of high sink current

Highly robust I/O design resistant to current injection interference

Almost all I/O pins are 5V tolerant, facilitating interfacing with devices operating at different voltages

STM8S105K4T6C power management and low-power features

The STM8S105K4T6C microcontroller excels in power efficiency, offering multiple low-power modes, making it ideal for battery-powered or energy-sensitive applications.

The device's main power management features include:

Wide operating voltage range: 2.95V to 5.5V, supporting both traditional 5V systems and modern 3.3V designs

Multiple low-power modes: Wait mode, Active-Halt mode, and Halt mode, allowing flexible selection based on application requirements

Independent peripheral clock control: Allows unused peripheral clocks to be disabled separately, further reducing power consumption

Power monitoring circuitry: Integrated power-on reset (POR), power-down reset (PDR), and programmable voltage detector (PVD) ensure reliable system operation during power anomalies

Outstanding low-power performance metrics:

Operating mode: Typical power consumption as low as a few milliamps, with specific values depending on operating frequency and activated peripherals

Halt mode: As low as 0.43μA (with RAM content retained)

Standby mode: Only 0.29μA (with three wake-up pins enabled)

Fast wake-up: Wake-up from halt mode takes only a few microseconds, balancing low power consumption and response speed requirements

The clock system design also prioritises flexibility and energy efficiency:

4 main clock sources: including a low-power crystal oscillator, external clock input, internal adjustable 16MHz RC oscillator, and internal low-power 128kHz RC oscillator

Clock Safety System (CSS): monitors the main clock source and automatically switches to a backup clock upon detecting a fault, enhancing system reliability

Flexible clock distribution: appropriate operating frequencies can be provided to different peripherals via prescalers

【Application Areas】

The STM8S105K4T6C microcontroller, with its outstanding performance and rich features, has found widespread application across multiple fields.

Major application areas include:

Industrial control: PLCs, motor control, sensor interfaces, industrial communication devices, etc.

Consumer electronics: home appliance control, smart remote controls, electric toys, LED lighting control, etc.

Automotive electronics: body control modules, LIN network nodes, automotive lighting systems, etc.

Medical devices: portable medical monitoring devices, home medical instruments, etc.

Security systems: access control, alarm systems, smart locks, etc.

Typical application examples:

Home appliance control boards: Utilising its rich peripheral capabilities to control motors, collect sensor data, and communicate with the main controller via UART

Industrial sensor nodes: Low-power characteristics make it suitable for battery-powered wireless sensor terminals

Automotive electronic modules: LIN master mode functionality simplifies automotive electronic network design

Smart meters: High-precision ADC and low-power characteristics perfectly match the application requirements of water meters, gas meters, etc.