About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersSTM8S903K3U6TR
STM8S903K3U6TR Image
STM8S903K3U6TR Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

STM8S903K3U6TR - STMicroelectronics

Manufacturer Part Number
STM8S903K3U6TR
Manufacturer
STMicroelectronics
Allelco Part Number
32D-STM8S903K3U6TR
Warranty
1 Year Allelco Warranty - Find out more
Parts Description
IC MCU 8BIT 8KB FLASH 32UFQFPN
Package
32-UFQFPN (5x5)
Data sheet
1.STM8S903K3U6TR.pdf ...

PCN Packaging

2.73KHz.pdf

PCN Assembly/Origin

STM8/STM32 10/Mar/2020.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 40813
  • Unit Price: $1.278
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $1.278 $1.28
10+ $1.106 $11.06
30+ $0.999 $29.97
100+ $0.848 $84.80
500+ $0.798 $399.00
1000+ $0.776 $776.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.
EXPRESS OPTION
Payment method
Our certification

Specifications

STM8S903K3U6TR Tech Specifications
STMicroelectronics - STM8S903K3U6TR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - STM8S903K3U6TR

Product Attribute Attribute Value  
Manufacturer STMicroelectronics  
Voltage - Supply (Vcc/Vdd) 2.95V ~ 5.5V  
Supplier Device Package 32-UFQFPN (5x5)  
Speed 16MHz  
Series STM8S  
RAM Size 1K x 8  
Program Memory Type FLASH  
Program Memory Size 8KB (8K x 8)  
Peripherals Brown-out Detect/Reset, POR, PWM, WDT  
Package / Case 32-UFQFN Exposed Pad  
Package Tape & Reel (TR)  
Product Attribute Attribute Value  
Oscillator Type Internal  
Operating Temperature -40°C ~ 85°C (TA)  
Number of I/O 28  
Mounting Type Surface Mount  
EEPROM Size 640 x 8  
Data Converters A/D 7x10b  
Core Size 8-Bit  
Core Processor STM8  
Connectivity I²C, IrDA, LINbus, SPI, UART/USART  
Base Product Number STM8  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.31.0001

Parts Introduction

Manufacturer Part Number

STM8S903K3U6TR

Manufacturer

stmicroelectronics

Introduction

The STM8S903K3U6TR is a high-performance, low-power 8-bit microcontroller from STMicroelectronics' STM8S series. It features a powerful STM8 core with a wide range of on-chip peripherals, making it suitable for a variety of embedded applications.

Product Features and Performance

8-bit STM8 core with a maximum operating frequency of 16MHz

8KB of Flash program memory, 1KB of RAM, and 640 bytes of EEPROM

Extensive peripheral set including I2C, IrDA, LIN bus, SPI, UART/USART

Integrated brown-out detection, power-on reset, PWM, and watchdog timer

28 general-purpose I/O pins

Operating voltage range of 2.95V to 5.5V

Operating temperature range of -40°C to 85°C

Product Advantages

Versatile peripheral set for diverse application requirements

Low-power consumption for battery-powered designs

Robust hardware features for reliable operation

Scalable performance and memory options within the STM8S series

Key Reasons to Choose This Product

Proven and reliable STM8 architecture with extensive ecosystem support

Flexible peripheral integration for efficient system design

Cost-effective solution for a wide range of embedded applications

Excellent power efficiency for extended battery life in portable devices

Quality and Safety Features

Robust design and manufacturing process for reliable operation

Integrated hardware security features for improved system integrity

Compliance with safety standards for various industries

Compatibility

The STM8S903K3U6TR is compatible with other microcontrollers in the STM8S series, allowing for easy migration and scalability within the product family.

Application Areas

Industrial automation and control

Home appliances and consumer electronics

Automotive electronics and transportation systems

Medical and healthcare devices

Building and home automation

Product Lifecycle

The STM8S903K3U6TR is an active product in the STM8S series. There are several equivalent and alternative models available within the STM8S family, such as the STM8S105C6T6, STM8S103F3P6, and STM8S001J3M3. If you require more information or assistance in selecting the appropriate model, please contact our sales team through our website.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics STM8S903K3U6TR

Product Attribute STM8S903K3U3TR STM8S903K3T6CTR STM8S903K3U6 STM8S903K3T6C
Part Number STM8S903K3U3TR STM8S903K3T6CTR STM8S903K3U6 STM8S903K3T6C
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Data Converters - - - -
Program Memory Type - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Core Processor - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Speed - - - -
RAM Size - - - -
Peripherals - - - -
Connectivity - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
EEPROM Size - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Oscillator Type - - - -
Number of I/O - - - -
Core Size - - - -
Series - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Supply (Vcc/Vdd) - - - -
Program Memory Size - - - -

STM8S903K3U6TR Datasheet PDF

Download STM8S903K3U6TR pdf datasheets and STMicroelectronics documentation for STM8S903K3U6TR - STMicroelectronics.

HTML Datasheet
STM8S903K3, STM8S903F3 Datasheet.pdf
PCN Packaging
2.73KHz.pdf
PCN Assembly/Origin
STM8/STM32 10/Mar/2020.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

  • Lea ***
    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

View More
STM8S903K3U6TR Image

STM8S903K3U6TR

STMicroelectronics
32D-STM8S903K3U6TR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB