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STMicroelectronics STM8S103F3P6TR
- Part No.:
- STM8S103F3P6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8S103F3P6TR.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,274
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Product details
Overview
STM8S103F3P6TR from STMicroelectronics is an 8-bit access-line microcontroller featuring a 16 MHz STM8 core, 8 Kbyte Flash program memory, 640 byte data EEPROM, 10-bit ADC with 5 channels, and integrated UART, SPI, and I²C interfaces. It operates from 2.95–5.5 V and supports low-power modes including active-halt and halt-used in cost-sensitive industrial sensor nodes and smart appliance control panels.
For engineers reviewing the STM8S103F3P6TR datasheet, STM8S103F3P6TR pinout, STM8S103F3P6TR application, or STM8S103F3P6TR equivalent, key selection criteria include its 20-pin TSSOP package, 16 MHz max CPU frequency at 5 V, 300 kcycle EEPROM endurance, 27 external interrupt vectors, and SWIM single-wire debug interface compatibility.
Technical Context
The STM8S103F3P6TR implements a Harvard-architecture 8-bit core with 3-stage pipeline and extended instruction set, enabling deterministic real-time execution. Its clock system integrates four independent sources: 16 MHz user-trimmable RC, 128 kHz low-power RC, crystal oscillator, and external clock input-with clock security monitoring to detect failure and trigger reset.
Interrupt handling uses a nested controller supporting 32 vectors and up to 27 external interrupts across six priority levels. Memory subsystem includes 8 Kbyte Flash with 20-year data retention at 55 °C after 10 kcycles, plus true data EEPROM (640 B) with guaranteed 300 kwrite cycles and byte-level erase capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit Harvard core with 3-stage pipeline and extended instruction set-enables efficient C code execution and deterministic interrupt latency. |
| Max Clock Frequency | 16 MHz at VDD = 5 V-supports real-time control loops up to 62.5 ns instruction cycle time. |
| Flash Memory | 8 Kbyte on-chip Flash with 10 kcycle endurance and 20-year data retention at 55 °C-sufficient for firmware + parameter storage in field-deployed devices. |
| Data EEPROM | 640 byte true data EEPROM with 300 kcycle endurance-enables robust nonvolatile logging and calibration storage without external components. |
| ADC Resolution & Channels | 10-bit SAR ADC with ±1 LSB INL and up to 5 multiplexed inputs-supports precision analog sensing (e.g., temperature, voltage, current) with scan mode and analog watchdog. |
| I/O Count & Type | 16 I/O pins in TSSOP20 package, including 13 high-sink outputs (20 mA sink capability)-suitable for direct LED driving and relay control without buffer stages. |
| Communication Peripherals | UART (with LIN master, SmartCard, IrDA), SPI (up to 8 Mbit/s), and I²C (up to 400 kbit/s)-enables interoperability with sensors, displays, and host controllers in compact embedded systems. |
Pinout & Package
STM8S103F3P6TR is packaged in a 20-pin TSSOP (4.4 mm body width) with 0.65 mm pitch, optimized for automated assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 2.95–5.5 V supply rail; requires local 100 nF decoupling capacitor for stable core operation. |
| VSS | Ground reference | Digital ground return path; must be connected to system GND with low-impedance trace. |
| NRST | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external push-button or supervisor IC assertion. |
| SWIM | Single-wire interface module | Dedicated debug programming pin-enables in-circuit programming and real-time debugging via ST-LINK tools. |
| PA0–PA7 | Programmable I/O port A | 8-bit bidirectional port with alternate functions including UART TX/RX, SPI, and ADC inputs-configurable as high-sink outputs (20 mA). |
| PD0–PD5 | Programmable I/O port D | 6-bit port supporting timer capture/compare, I²C SCL/SDA, and general-purpose I/O-includes internal pull-ups configurable per pin. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power clock sources | Integrated 128 kHz RC oscillator enables ultra-low-power wake-up timing (e.g., periodic sensor sampling at µA-level current draw). |
| Flexible reset architecture | Permanently active power-on/power-down reset with clock security monitor-ensures reliable boot and fault recovery without external supervisors. |
| True data EEPROM | 640 byte byte-erasable EEPROM with 300 kcycle endurance-eliminates need for external serial EEPROM in data-logging applications. |
| High-sink I/O capability | 21 high-sink outputs (in 32-pin variants); TSSOP20 provides 13 such pins rated for 20 mA sink-directly drives LEDs, small relays, or optocouplers. |
| SWIM debug interface | Single-pin, non-intrusive debugging and programming-reduces PCB footprint and simplifies production programming vs. JTAG/SWD. |
Applications
| Smart Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Embedded controller in washing machine mainboard managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central MCU executing state-machine logic, reading ADC-based pressure/temperature sensors, and driving display segments via GPIO. Use Value: Integrated 10-bit ADC, 3 timers (including advanced TIM1 for motor PWM), and UART for communication with display module reduce BOM count by 2–3 discrete components. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ in HVAC ducts. IC Role / Device Role / Timing Role: Low-power host processor acquiring sensor data via I²C, performing basic filtering, and transmitting via UART to gateway. Use Value: Active-halt mode draws <1.5 µA (typ.) at 3.3 V, extending 2×AA battery life beyond 5 years while maintaining RTC-free wake-up scheduling. |
| LED Lighting Driver | Home Automation Actuator |
Use Scenario: Dimmable LED driver board for commercial downlights using TRIAC or MOSFET switching. IC Role / Device Role / Timing Role: PWM generator and zero-crossing detector interfacing with AC line via optocoupler; manages thermal derating and overcurrent protection. Use Value: TIM1's complementary outputs with programmable dead-time insertion prevent shoot-through in half-bridge configurations-critical for reliable dimming control. |
Use Scenario: Wireless blind controller receiving RF commands and actuating stepper motor via H-bridge. IC Role / Device Role / Timing Role: Command interpreter and motion sequencer using TIM2 for precise step timing and PD pins for direction/control signals. Use Value: 27 external interrupt vectors allow simultaneous handling of RF packet reception, limit switch inputs, and button presses-ensuring responsive UI without polling overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S003F3P6 | Same 20-pin TSSOP package and core, but only 4 Kbyte Flash and no data EEPROM-uses standard RAM for data retention. | Suitable for simpler firmware-only applications without persistent parameter storage. | Select when BOM cost reduction is critical and EEPROM functionality is unnecessary. |
| EFM8BB10F8G-A-QSOP20 | Silicon Labs 8051-based MCU with 8 Kbyte Flash, 512 byte RAM, no EEPROM; higher active current but integrated capacitive touch support. | Better suited for human-interface-dominant designs (e.g., touch buttons) rather than sensor/data-logging roles. | Choose if capacitive touch sensing is required and external EEPROM can be added for data storage. |
Compared with STM8S103F3P6TR, STM8S003F3P6 trades EEPROM and Flash capacity for lower unit cost, while EFM8BB10F8G-A-QSOP20 shifts focus to mixed-signal HMI features at the expense of nonvolatile data integrity-making STM8S103F3P6TR optimal for applications requiring robust, integrated parameter storage and analog acquisition.
Availability
STM8S103F3P6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control panels, LED lighting drivers, and home automation actuators requiring stable component supply across multi-year production cycles.
Supply support for STM8S103F3P6TR 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 management ICs, sensors, and automotive semiconductors since 1987.
The STM8S series targets cost-sensitive, resource-constrained embedded applications-delivering robust 8-bit performance with integrated analog peripherals, low-power operation, and production-proven reliability for industrial and consumer equipment.
FAQ
Does STM8S103F3P6TR support in-system programming via SWIM?
Yes. The STM8S103F3P6TR features a dedicated SWIM (Single-Wire Interface Module) pin that enables full in-circuit programming and debugging using ST-LINK/V2 or compatible programmers. No bootloader is required-flash and EEPROM can be reprogrammed directly through the SWIM interface with standard ST software tools like STVP or STM8CubeProgrammer.
What is the maximum operating temperature range for STM8S103F3P6TR?
The STM8S103F3P6TR is specified for industrial temperature range: –40 °C to +85 °C. Electrical characteristics-including Flash write/erase endurance, ADC accuracy, and I/O drive strength-are guaranteed across this full range per STMicroelectronics datasheet DS6120 Rev 15, Section 10.3.
Can the internal 16 MHz RC oscillator be calibrated for improved accuracy?
Yes. The internal 16 MHz RC oscillator includes a user-trimmable calibration register (CLK_HSICALR) allowing fine-tuning in steps of ±0.5% across a ±8% total range. Calibration is performed once during production or field setup using an external reference clock or known-frequency signal source, improving timing accuracy for UART baud generation and timer-based intervals.
Is there hardware support for LIN bus communication on STM8S103F3P6TR?
Yes. The integrated UART1 peripheral supports LIN 2.1/2.2 master mode with automatic sync-break generation, checksum calculation (classic and enhanced), and identifier filtering-enabling direct connection to LIN transceivers (e.g., TLE7259) without external protocol assist hardware.
STM8S103F3P6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- 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:
- 16
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 640 x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.95V ~ 5.5V
- Data Converters:
- A/D 5x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8S103F3P6TR FAQ
1.How can I place an order for STM8S103F3P6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8S103F3P6TR 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 STM8S103F3P6TR reliable?
The price and inventory of STM8S103F3P6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8S103F3P6TR is usually 5 days.
3.What payment methods are accepted for STM8S103F3P6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8S103F3P6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8S103F3P6TR?
STM8S103F3P6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8S103F3P6TR 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 STM8S103F3P6TR?
For technical support, including STM8S103F3P6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8S103F3P6TR requirements.
6.How does Aetrix verify that STM8S103F3P6TR is sourced from the original manufacturer or authorized distributors?
All STM8S103F3P6TR 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 STM8S103F3P6TR meets industry standards.
7.What is the process for return or replacement of STM8S103F3P6TR?
All STM8S103F3P6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM8S103F3P6TR, 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 STM8S103F3P6TR part is unused and in its original packaging.
Return procedure for STM8S103F3P6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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