STM8S 8-bit MCU STM8S903K3T6CTR Microcontroller STM8S105K4T6C

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$0.78 - $2.88 / Piece | 5 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Brand Name:
Model Number:
LQFP-32, LQFP-32
Part number:
Operating Temperature:
-40°C ~ 85°C (TA)
Voltage - Supply (Vcc/Vdd):
2.95 V ~ 5.5 V
Data Converters:
A/D 7x10b
Program Memory Size:
8KB (8K x 8)
Core Size:
RAM Size:
1K x 8
Program Memory Type:
Supply Ability
Supply Ability:
14405 Piece/Pieces per Day
Packaging & Delivery
Packaging Details
Tray or Tube or Reel
Fob Shenzhen or HK

STM8S903K3T6CTR / STM8S903K3T6C / STM8S903K3 

Integrated Circuits /Electronic Components /Active components 

STM8 STM8S Microcontroller IC 8-Bit 16MHz 8KB (8K x 8) FLASH 32-LQFP (7x7)

16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM,   640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I²C
All integrated circuit and electronic component from the largest independent distributor of China    

Product Description

General Description 

The STM8S903K3/F3 access line 8-bit microcontrollers offer 8 Kbyte Flash program  memory, plus integrated true data EEPROM. The STM8S microcontroller family reference  manual (RM0016) refers to devices in this family as low-density. They provide the following  benefits: performance, robustness, and reduced system cost.  Device performance and robustness are ensured by advanced core and peripherals made  in a state-of-the art technology, a 16 MHz clock frequency, robust I/Os, independent  watchdogs with separate clock source, and a clock security system.  The system cost is reduced thanks to an integrated true data EEPROM for up to 300 k  write/erase cycles and a high system integration level with internal clock oscillators,  watchdog and brown-out reset.


Products Attributes 

Core ProcessorSTM8
Core Size8-Bit
ConnectivityI²C, IrDA, LINbus, SPI, UART/USART
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
Number of I/O28
Program Memory Size8KB (8K x 8)
Program Memory TypeFLASH
EEPROM Size640 x 8
RAM Size1K x 8
Voltage - Supply (Vcc/Vdd)2.95 V ~ 5.5 V
Data ConvertersA/D 7x10b
Oscillator TypeInternal
Operating Temperature-40°C ~ 85°C (TA)
Package / Case32-LQFP
Supplier Device Package32-LQFP (7x7)
Base Part NumberSTM8S903






Company Information

Asco Electronic Group Co. Limited founded in 2005, professional committed to supply products in the  field of the industry electric welding machine , communication , intelligent household , industrial,   control equipment , medical equipment ,auto electronic ,STV/MID , OEM/ODM industry, etc. Engaged in offering all kinds IC of world famous brands.  After years of unremitting efforts, ASCO has become international well-known electronic components distributor, with a large domestic sales network and stable supply channels.

We are totally committed to fully understanding our customers' desired outcomes. We do not assume anything and fully embrace the importance of quality in the broadest sense.Quality is the central pillar around which all of our procedures and working practices are set and implemented. This is reflected in our relentless desire to seek perfection through continuous improvements across the Group.We also understand that no two customers or suppliers are exactly alike. Our approach is to give informed choices, offering group services and commercial solutions that best fit your business model and aspirations.



Buyer Feedback




Packaging & Shipping



1.We will arrange the shipment within 3 working days after the payment reached.

2.We can ship Via your shipping account ( DHL / FedEx / UPS / TNT ), Or ship via our side .

3.We are not responsible for any accidents, delays or other issues that are the responsibility of the shipping service.


Refund & Replacement

1.We provide 30-60 days warranty.

2.If the item you purchase from our store are not of perfected quality, that is they don't work electronically to manufacturers specifications, simply return them to us for replacement or refund.

3.If the items is defective, pls notify us within 3 days of delivery.

4.Any items must be returned in their original condition to qualify for a refund or replacement.

5.The buyer is responsible for all the shipping cost incurre 


1. Q: What is your products quality ?

A: We offer all parts are new and original .

2. Q:What is your lead time?

A: 1-2 days. we have own warehouse and stock in large quantity.

3. Q: What is the shipping port?

A: We ship the goods via Port of HONGKONG or Shenzhen

4. Q: What is your payment terms?

A: T/T, Paypal, Western union,  L/C ,ESROW 

5.Q: What’s your advantage?

A: Competitive price & Good quality control & Fast production and delivery & Low MOQ & Professional sales and good after-sale service

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