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STM8S103F3P6TR

8-bit STM8 MCU, 8KB Flash, 640B EEPROM, 1KB RAM, 16MHz, TSSOP-20

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Manufacturer Part：

STM8S103F3P6TR

Package：

TSSOP-20 (6.5 x 4.4 mm, 0.65mm pitch)

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Description

Product Overview

The STM8S103F3P6TR is a mainstream access line 8-bit microcontroller from STMicroelectronics featuring 8KB Flash, 640-byte EEPROM, 1KB RAM, 16 MHz STM8 core, 10-bit ADC, UART, SPI, I2C in a TSSOP-20 package.

Key Specifications

Core STM8 8-bit, Harvard architecture, 3-stage pipeline
Max Clock Speed 16 MHz
Flash Memory 8 KB (20-year data retention at 55°C)
Data EEPROM 640 bytes (300 kcycle endurance)
RAM 1 KB
Supply Voltage 2.95 V to 5.5 V
ADC 10-bit, ±1 LSB, up to 5 channels, scan mode
Timers 16-bit advanced (TIM1), 16-bit GP (TIM2), 8-bit basic (TIM4)
Communication UART (SmartCard/IrDA/LIN), SPI (8 Mbit/s), I2C (400 kbit/s)
I/O Pins Up to 16 (TSSOP-20 package)
Watchdogs Window WDG + Independent WDG
Unique ID 96-bit unique device key
Operating Temperature -40°C to +85°C
Package TSSOP-20

Features

  • 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline
  • Integrated true data EEPROM: 640 bytes, 300 kcycle endurance
  • 4 clock sources: crystal, external, 16 MHz RC (trimmable), 128 kHz RC
  • Clock security system with clock monitor
  • Low-power modes: wait, active-halt, halt
  • 10-bit ADC with analog watchdog
  • Advanced control timer with complementary outputs and dead-time
  • 96-bit unique device identifier
  • Highly robust I/O design, immune against current injection

Applications

  • Home appliances and consumer electronics
  • Industrial controllers and sensors
  • Motor control and lighting
  • Building automation
  • Low-cost embedded applications

The STM8S103F3P6TR is a mainstream access line 8-bit microcontroller from STMicroelectronics based on the STM8 core with Harvard architecture and 3-stage pipeline operating at up to 16 MHz. It integrates 8KB Flash program memory with 20-year data retention, 640 bytes of true data EEPROM with 300 kcycle endurance, and 1KB SRAM. The device features a 10-bit ADC with ±1 LSB accuracy and up to 5 multiplexed channels, an advanced 16-bit control timer with complementary outputs and dead-time insertion suitable for motor control, plus UART with SmartCard/IrDA/LIN support, SPI up to 8 Mbit/s, and I2C up to 400 kbit/s. Clock sources include internal 16 MHz RC (user-trimmable), 128 kHz RC, crystal oscillator, and external clock with a clock security system. The 96-bit unique device identifier provides a hardware-based serial number for each device.

The STM8S103F3P6TR uses ST’s 8-bit STM8 core with Harvard architecture, meaning program Flash and data RAM are accessed through separate buses simultaneously for higher throughput. The 3-stage pipeline (fetch, decode, execute) allows most instructions to complete in 1-2 clock cycles. The extended instruction set supports bit manipulation, signed arithmetic, and pointer operations. The internal voltage regulator provides stable core voltage from the 2.95-5.5V supply. Four clock sources offer flexibility: the 16 MHz HSI RC is factory-trimmed to ±1% and can be user-trimmed for higher accuracy; the 128 kHz LSI RC drives the independent watchdog and auto-wakeup; external crystal or clock inputs are supported. The clock security system monitors the primary clock and automatically switches to the backup HSI if a failure is detected. The true data EEPROM uses a separate charge pump and write controller, allowing byte-level erase/write without affecting Flash. Low-power modes progressively shut down subsystems: wait mode stops the CPU but keeps peripherals running; active-halt stops CPU and peripheral clocks but allows AWU wakeup; halt mode powers down everything except IWDG and AWU for minimum consumption.

Pin Name Type Description
1 PD4/TIM2_BEEP I/O Port D4, TIM2 capture/compare, beeper output
2 PD5/AIN5/UART_TX I/O Port D5, ADC input 5, UART transmit
3 PD6/AIN6/UART_RX I/O Port D6, ADC input 6, UART receive
4 NRST System Reset input (active low, internal pull-up)
5 PA1/OSCIN I/O Port A1, crystal oscillator input
6 PA2/OSCOUT I/O Port A2, crystal oscillator output
7 VSS Power Ground
8 VCAP Power Internal regulator capacitor (connect 1µF to GND)
9 VDD Power Supply voltage (2.95-5.5V)
10 PA3/TIM2_CH3 I/O Port A3, TIM2 channel 3
11 PB4/I2C_SDA I/O Port B4, I2C data
12 PB5/I2C_SCL I/O Port B5, I2C clock
13 PC3/TIM1_CH3 I/O Port C3, TIM1 channel 3
14 PC4/TIM1_CH4/CLK_CCO I/O Port C4, TIM1 channel 4, clock output
15 PC5/SPI_SCK I/O Port C5, SPI clock
16 PC6/SPI_MOSI I/O Port C6, SPI master out slave in
17 PC7/SPI_MISO I/O Port C7, SPI master in slave out
18 PD1/SPI_NSS I/O Port D1, SPI chip select
19 PD2/AIN3/TIM1_BKIN I/O Port D2, ADC input 3, TIM1 break input
20 PD3/AIN4/TIM2_CH1 I/O Port D3, ADC input 4, TIM2 channel 1
  • Motor Control: Advanced 16-bit TIM1 with complementary outputs and dead-time insertion drives half-bridge and full-bridge power stages for BLDC and PMSM motors
  • Home Appliances: 2.95-5.5V operation, robust I/O immune to current injection, and dual watchdogs suit washing machines and air conditioners
  • Industrial Sensors: 10-bit ADC with analog watchdog and scan mode monitors multiple analog channels autonomously
  • Communication Gateways: UART with LIN master, SPI, and I2C interfaces connect to wired and wireless modules
  • Low-Cost Controllers: Integrated EEPROM eliminates external memory; clock security and brown-out reset increase reliability without external components
Model Manufacturer Key Difference
STM8S103F3M6TR ST Same in SO-20 package
STM8S103F3U3TR ST Same in UFQFPN-20 (3x3mm)
STM8S003F3P6TR ST 8KB Flash, 128B EEPROM, lower cost
STM8L051F3P6 ST Ultra-low-power variant, TSSOP-20
ATtiny441-SSU Microchip 4KB Flash, 256B RAM, 14-SOIC
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We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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