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STMicroelectronics STM8S103F3U6TR — Microcontrollers & Processors (MCU / MPU / DSP)

STM8S103F3U6TR 8-bit MCU, 16 MHz, 8 KB Flash, 20-UFQFN

MPNSTM8S103F3U6TR
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STMicroelectronics STM8S103F3U6TR, STM8S series 8-bit MCU, 16 MHz core, 8 KB Flash, 1 KB RAM, 640 B EEPROM, 2.95V–5.5V supply, -40°C to 85°C, 20-UFQFN.

$1.7900Ref. price · indicative, final on quote
Packaging20-UFQFN
RoHSROHS3 Compliant
SeriesSTM8S
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM8S103F3U6TR specifications
ParameterValue
SeriesSTM8S
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.95V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed16MHz
PackageTape & Reel (TR) Cut Tape (CT)
RAM size1K x 8
Core size8-Bit
EEPROM size640 x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, SPI, UART/USART
Number of i (O)16
Core processorSTM8
Case20-UFQFN
Data convertersA/D 5x10b
Program memory size8KB (8K x 8)

Product details

What this 8-bit MCU does on the board

The STMicroelectronics STM8S103F3U6TR is an 8-bit microcontroller from the STM8S value-line family, built around the STM8 core running at 16 MHz.

Sixteen I/O lines are available on the 20-pin UFQFN package, along with a 5-channel 10-bit ADC.

Frequently asked questions

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Buyers need to compare costs for budget and BOM planning.

Is STM8S103F3U6TR in stock?

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What is the datasheet for STM8S103F3U6TR?

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What is the equivalent of STM8S103F3U6TR?

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Is STM8S103F3U6TR obsolete?

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What is the pinout of STM8S103F3U6TR?

Design engineers need pin configuration for schematic and PCB layout.