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Integrated Circuits (ICs)

STM8S903K3U3

Mainstream Application specific line 8-bit MCU with 8 Kbytes Flash, 16 MHz CPU, integrated EEPROM

The STMicroelectronics 8-bit MCU is a versatile and efficient microcontroller designed for mainstream applications, featuring an 8 Kbytes Flash memory and a 16 MHz CPU. This compact device, housed in a UFQFPN package, is ideal for a variety of embedded systems requiring reliable performance and low power consumption. With a wide operating temperature range and multiple communication interfaces, this MCU is perfect for both industrial and consumer applications.

BrandSTMicroelectronics
PackageUFQFPN
Device TypeMicrocontrollers
MountingSurface Mount

Full Specifications

Number of Pins32
Data Bus Width8b
Max Frequency16MHz
Number of I/Os28
InterfaceI2C, IrDA, LIN, SPI, UART, USART
Memory TypeFLASH
Memory Size8kB
Min Supply Voltage2.95V
Max Supply Voltage5.5V
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
Lifecycle StatusProduction
MountSurface Mount
Frequency16MHz
Max Operating Temperature125°C

About This Product

The STMicroelectronics 8-bit MCU is a versatile and efficient microcontroller designed for mainstream applications, featuring an 8 Kbytes Flash memory and a 16 MHz CPU. This compact device, housed in a UFQFPN package, is ideal for a variety of embedded systems requiring reliable performance and low power consumption. With a wide operating temperature range and multiple communication interfaces, this MCU is perfect for both industrial and consumer applications.

What is this product used for?

Suitable for design, repair, and production programs using Microcontrollers devices.

Key Features

  • Case/Package: UFQFPN
  • Number of Pins: 32
  • Interface: I2C, IrDA, LIN, SPI, UART, USART
  • Mount: Surface Mount
  • Lifecycle Status: Production

Typical Use Cases

Embedded Processors and Controllers Microcontrollers UFQFPN Microcontrollers

Sourcing Support for This MPN

Contact JaronSemi to confirm package, date code, and traceability requirements.

  • MPN and package verification against your BOM or approved vendor list
  • Approved-alternate and cross-reference review when the requested line is constrained
  • Availability, lifecycle, and supply-risk discussion for procurement planning
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RFQ Checklist

Part number Confirm the target MPN or suggest approved alternates
Target Quantity Sample, pilot run, or mass production volume
Project stage Prototype, NPI, or ongoing production
Target price Budget or target price range if available
Mainstream Application specific line 8-bit MCU with 8 Kbytes Flash, 16 MHz CPU, integrated EEPROM

STM8S903K3U3

STMicroelectronics

The STMicroelectronics 8-bit MCU is a versatile and efficient microcontroller designed for mainstream applications, featuring an 8 Kbytes Flash memory and a 16 MHz CPU. This compact device, housed in a UFQFPN package, is ideal for a variety of embedded systems requiring reliable performance and low power consumption. With a wide operating temperature range and multiple communication interfaces, this MCU is perfect for both industrial and consumer applications.

  • Competitive pricing from verified sources
  • Sample to production quantities
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