Key Features

1. STM8 Advanced 8-bit Core

The STM8S003F3U6TR integrates ST’s STM8 advanced core with:

• Harvard architecture
• 3-stage pipeline
• Extended instruction set

Benefits:

• Higher execution efficiency than traditional 8-bit MCUs
• Improved code density
• Suitable for compact firmware development
• Provides reliable real-time control performance

Typical applications:

• Appliance controllers
• Industrial modules
• Consumer electronics
• Sensor nodes

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2. 16MHz Processing Performance

The MCU operates at up to 16MHz clock frequency.

Benefits:

• Provides sufficient performance for control applications
• Supports real-time peripheral handling
• Enables compact embedded firmware
• Maintains low system cost and power consumption

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3. 8KB Flash Program Memory

The STM8S003F3U6TR provides 8KB embedded Flash memory.

Benefits:

• Stores application firmware internally
• Eliminates external program memory
• Reduces PCB complexity
• Suitable for fixed-function embedded products

Typical firmware:

• Motor-control algorithms
• Sensor-control logic
• User-interface programs
• Communication protocols

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4. Integrated 128-byte EEPROM

The MCU includes true data EEPROM with endurance up to 100,000 write/erase cycles.

Benefits:

• Stores calibration parameters
• Saves configuration data
• Maintains user settings after power loss
• Eliminates external EEPROM components

Applications:

• Meter calibration
• Appliance settings
• Industrial parameter storage

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5. 1KB SRAM for Runtime Processing

The STM8S003F3U6TR integrates 1KB RAM.

Benefits:

• Supports application variables
• Provides communication buffers
• Suitable for compact embedded firmware
• Reduces external memory requirements

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6. 10-bit ADC Analog Capability

The MCU integrates a 10-bit analog-to-digital converter with up to 5 input channels.

Benefits:

• Direct sensor measurement
• Analog voltage monitoring
• Reduces external ADC requirements
• Suitable for simple instrumentation systems

Typical uses:

• Temperature sensing
• Voltage measurement
• Battery monitoring
• Analog feedback control

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7. Advanced Timer and PWM Functions

The STM8S003F3U6TR provides:

• 16-bit advanced-control timer
• General-purpose timers
• PWM capability

Benefits:

• Supports motor-control applications
• Enables LED dimming
• Generates precise timing signals
• Controls actuators and power devices

Applications:

• Fan controllers
• Small motor drivers
• Lighting control
• Automation systems

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8. UART, SPI and I²C Communication

The MCU integrates common serial communication interfaces:

• UART
• SPI
• I²C

Benefits:

• Connects external sensors
• Supports display modules
• Interfaces with communication modules
• Enables peripheral expansion

Typical connections:

• EEPROM
• Sensors
• Displays
• Wireless modules

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9. Robust Clock, Reset and Power Management

The device integrates:

• Multiple clock sources
• Brown-out reset
• Independent watchdog
• Window watchdog
• Clock security system

Benefits:

• Improves system reliability
• Enables automatic recovery from software failures
• Protects against unstable power conditions
• Suitable for unattended embedded products

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10. Compact UFQFPN20 Package

The STM8S003F3U6TR uses a 3mm × 3mm UFQFPN20 package.

Benefits:

• Extremely small PCB footprint
• Suitable for space-constrained products
• Supports automated SMT assembly
• Ideal for high-volume consumer electronics

Applications

Consumer Appliances

• Washing machine controllers
• Air-conditioner control boards
• Kitchen appliance controllers
• Smart home devices
• Household electronics

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Industrial Control

• Small automation controllers
• Sensor modules
• Relay control boards
• Embedded monitoring systems
• Industrial interface modules

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Motor Control

• Fan controllers
• Small DC motor control
• Pump controllers
• Actuator systems
• Robotics subsystems

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Power Management

• Battery monitoring circuits
• LED controllers
• Charger control modules
• Power sequencing systems

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Sensors and Measurement

• Temperature sensors
• Voltage monitoring devices
• Simple measurement instruments
• Data acquisition modules

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Consumer Electronics

• Remote controllers
• Electronic locks
• Small display controllers
• User-interface boards