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STMicroelectronics STM8S003K3T6CTR
- Part No.:
- STM8S003K3T6CTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM8S003K3T6CTR.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:782
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Product details
Overview
STM8S003K3T6CTR from STMicroelectronics is an 8-bit value-line microcontroller featuring a 16 MHz STM8 core, 8 Kbyte Flash memory, 128-byte true data EEPROM, 10-bit ADC with up to 5 channels, and integrated UART, SPI, and I²C interfaces. It operates from 2.95 V to 5.5 V and targets cost-sensitive industrial control, sensor interface, and appliance timing applications.
For engineers reviewing the STM8S003K3T6CTR datasheet, STM8S003K3T6CTR pinout, STM8S003K3T6CTR application, or STM8S003K3T6CTR equivalent, key selection criteria include its LQFP32 package, 28 GPIOs (21 high-sink), SWIM debug interface, low-power modes (halt/active-halt/wait), and 100 k-cycle EEPROM endurance.
Technical Context
The device implements a Harvard-architecture STM8 core with 3-stage pipeline and extended instruction set, enabling deterministic real-time execution. Its clock system integrates four sources: user-trimmable 16 MHz RC, 128 kHz low-power RC, crystal oscillator, and external clock input - all monitored by a clock security system.
Interrupt handling uses a nested controller supporting 32 vectors and up to 27 external interrupts across 6 priority levels. Peripheral integration includes TIM1 (16-bit advanced timer with dead-time insertion), TIM2 (16-bit general-purpose), TIM4 (8-bit basic), and auto-wakeup timer - enabling precise motor control, PWM generation, and periodic wake-up from low-power states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | STM8 8-bit Harvard architecture with 3-stage pipeline; enables deterministic interrupt latency and efficient code density. |
| Max Clock Frequency | 16 MHz at 2.95–5.5 V supply; supports real-time control loops up to 1 µs resolution. |
| Flash Memory | 8 Kbyte with 20-year data retention at 55 °C after 100 write/erase cycles; sufficient for firmware + parameter storage. |
| Data EEPROM | 128 bytes true EEPROM with 100 k write/erase endurance; retains calibration data across power cycles without external backup. |
| ADC | 10-bit SAR ADC with ±1 LSB INL, up to 5 multiplexed inputs, scan mode, and analog watchdog; suitable for sensor signal digitization in noisy environments. |
| I/O Count | 28 GPIOs in LQFP32 package, including 21 high-sink outputs capable of 20 mA sink per pin; drives LEDs, relays, and logic-level MOSFETs directly. |
| Debug Interface | Single-Wire Interface Module (SWIM); enables non-intrusive on-chip programming and debugging using one pin (SWIM). |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual supply pins support stable core and I/O operation; VDD must be decoupled with 100 nF ceramic capacitor near pin. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts Schmitt-triggered signals; requires external RC filter per Figure 37 for noise immunity. |
| SWIM | Single-wire debug interface | Enables full flash programming and real-time debugging via dedicated pin; no additional UART or JTAG pins required. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/O ports | 28 total GPIOs; PA, PB, PC support alternate functions (UART, SPI, I²C, timers); PD0–PD3 are high-sink only (20 mA sink capability). |
| CLK_OUT | Master clock output | Provides synchronous clock reference for external peripherals (e.g., ADC sampling trigger or slave device sync). |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | Halt mode consumes <1 µA @ 3.3 V; enables battery-powered devices with multi-year runtime. |
| Robust I/O design | Immune to current injection up to 100 mA; prevents latch-up during ESD or hot-plug events. |
| Flexible clocking | Four independent clock sources with automatic failover; eliminates need for external crystal in cost-sensitive designs. |
| True data EEPROM | 128 bytes embedded with hardware wear-leveling; avoids external serial EEPROM and associated PCB area/cost. |
| Advanced timer subsystem | TIM1 supports complementary PWM outputs with programmable dead-time; enables 3-phase motor gate drive without external logic. |
Applications
| Industrial Sensor Node | Smart Appliance Control |
|---|---|
Use Scenario: Temperature/humidity monitoring node with local display and wireless uplink. IC Role / Device Role / Timing Role: Central MCU managing sensor reads, LCD refresh, button debounce, and UART-to-Bluetooth bridge timing. Use Value: 10-bit ADC with analog watchdog detects sensor faults; SWIM enables field firmware updates without removing PCB. | Use Scenario: Washing machine main control board regulating motor speed, water valves, and user interface. IC Role / Device Role / Timing Role: Real-time motor commutation controller using TIM1 complementary PWM and ADC feedback sampling. Use Value: 21 high-sink I/Os drive solenoids and indicator LEDs directly; 128-byte EEPROM stores cycle count and error logs. |
| LED Lighting Driver | POS Terminal Peripheral |
Use Scenario: Constant-current LED driver for signage with dimming and thermal foldback. IC Role / Device Role / Timing Role: PWM generator and thermal sensor interface using TIM2 and ADC channel 0. Use Value: 16 MHz core ensures 100+ Hz PWM dimming frequency with minimal flicker; low-power halt mode extends standby battery life. | Use Scenario: Barcode scanner add-on module interfacing with main POS controller via UART/I²C. IC Role / Device Role / Timing Role: Protocol translator and buffer manager handling asynchronous barcode decode and synchronized host handshaking. Use Value: UART with clock output enables synchronous data transfer to host; 28 GPIOs support status LEDs, buzzer, and button matrix scanning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S005K3T6CTR | 16 Kbyte Flash, 512-byte RAM, same peripherals and pinout; no change to PCB layout. | Supports larger firmware images and more complex state machines without increasing footprint. | Select when firmware size exceeds 8 Kbyte or additional RAM is needed for buffering. |
| STM8L052R8T6 | Ultra-low-power STM8L core, 64 Kbyte Flash, 2 Kbyte RAM, but only 24 GPIOs and no high-sink outputs. | Better suited for battery-critical applications; lacks direct LED/solenoid drive capability. | Choose for sub-µA sleep current requirements where I/O drive strength is secondary. |
Compared with STM8S005K3T6CTR, the STM8S003K3T6CTR trades Flash/RAM capacity for lower unit cost and smaller die size; versus STM8L052R8T6, it prioritizes I/O drive strength and cost over ultra-low-power sleep modes - making it optimal for mains-powered, I/O-intensive control tasks.
Availability
STM8S003K3T6CTR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control, LED lighting drivers, and POS terminal peripherals requiring stable component supply and long-term manufacturability.
Supply support for STM8S003K3T6CTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer markets.
The STM8S value line targets cost-sensitive embedded applications requiring robust peripherals, low-voltage operation, and proven toolchain support - emphasizing ease of migration from legacy 8-bit architectures.
FAQ
What debug interface does STM8S003K3T6CTR use, and what hardware is required?
The STM8S003K3T6CTR uses the Single-Wire Interface Module (SWIM), requiring only one dedicated pin (SWIM) and ground for full programming and debugging. No external debugger chip is needed - ST-LINK/V2 or compatible SWIM programmers connect directly via SWIM and GND. The interface supports flash erase, read, write, and real-time variable inspection without halting CPU execution.
Does STM8S003K3T6CTR support crystal oscillators, and what frequency ranges are validated?
Yes, it supports low-power crystal resonator oscillators from 1 to 16 MHz, with full characterization in the datasheet (Section 9.3.3). The HSE oscillator circuit is designed for parallel-resonant crystals with load capacitance of 12.5 pF to 20 pF. External capacitors (typically 12–22 pF each) must be placed close to the OSC_IN/OSC_OUT pins per Figure 18.
Can the 128-byte data EEPROM be used for storing calibration coefficients, and what is its write endurance?
Yes, the 128-byte true data EEPROM is specifically designed for non-volatile parameter storage such as calibration coefficients, device IDs, or usage counters. It guarantees 100,000 write/erase cycles and 20-year data retention at 55 °C, with built-in hardware wear-leveling - eliminating need for software emulation or external EEPROM.
How many I/O pins support high-sink capability, and what is the maximum sink current per pin?
21 I/O pins (PD0–PD3 and selected PA/PB/PC pins configured as high-sink) support 20 mA sink current per pin at VDD = 5 V, as specified in Table 41. This allows direct driving of LEDs, small relays, and logic-level N-channel MOSFETs without external drivers - reducing BOM cost and board space in compact control designs.
STM8S003K3T6CTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM8S
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 28
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 128 x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.95V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8S003K3T6CTR FAQ
1.How can I place an order for STM8S003K3T6CTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8S003K3T6CTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM8S003K3T6CTR reliable?
The price and inventory of STM8S003K3T6CTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8S003K3T6CTR is usually 5 days.
3.What payment methods are accepted for STM8S003K3T6CTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8S003K3T6CTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8S003K3T6CTR?
STM8S003K3T6CTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8S003K3T6CTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM8S003K3T6CTR?
For technical support, including STM8S003K3T6CTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8S003K3T6CTR requirements.
6.How does Aetrix verify that STM8S003K3T6CTR is sourced from the original manufacturer or authorized distributors?
All STM8S003K3T6CTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM8S003K3T6CTR meets industry standards.
7.What is the process for return or replacement of STM8S003K3T6CTR?
All STM8S003K3T6CTR units undergo pre-shipment inspection (PSI). If there is an issue with STM8S003K3T6CTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM8S003K3T6CTR part is unused and in its original packaging.
Return procedure for STM8S003K3T6CTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM8S003K3T6CTR Tags
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ATTINY4-TSHR
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ATTINY10-TSHR
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ATTINY10-TS8R
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PIC16F15213T-I/MF
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PIC16F15213-E/MF
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PIC10F200T-I/OT
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ATTINY412-SSNR
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PIC10F202T-I/OT
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ATTINY404-SSNR
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