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STMicroelectronics STM8S103F3P6TR — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM8S103F3P6TR 8-bit MCU, 16 MHz, 8 KB Flash, 20-TSSOP

MPNSTM8S103F3P6TR
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STMicroelectronics STM8S103F3P6TR, 8-bit STM8 core MCU, 16 MHz, 8 KB Flash, 1K x 8 RAM, 640 x 8 EEPROM, 2.95 V to 5.5 V supply, -40°C to 85°C, 20-TSSOP package, 16 I/O.

$2.0800Ref. price · indicative, final on quote
STMicroelectronics STM8S103F3P6TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8S103F3P6TR 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-TSSOP (0.173\", 4.40mm Width)
Data convertersA/D 5x10b
Program memory size8KB (8K x 8)

Product details

16 MHz 8-bit MCU with integrated EEPROM for industrial control

Peripheral set and I/O — what the 16 I/O and connectivity options mean for the BOM

Sixteen I/O lines in a 20-TSSOP package (4.4 mm body width) give enough pins for a few sensor inputs, a PWM-driven actuator, and a serial link.

Package and mounting — 20-TSSOP footprint for space-constrained boards

Supplied in a 20-TSSOP package (0.173" body width, 4.40 mm wide), the part is a surface-mount device. The Tape & Reel variant (TR suffix) is the standard for automated pick-and-place assembly. No exposed thermal pad — standard TSSOP land pattern applies.

Frequently asked questions

What is the closest pin-compatible alternative to STM8S103F3P6TR?

Within the STM8S value line, the STM8S003F3P6 is a common pin-compatible alternative with the same 20-TSSOP footprint, 16 MHz core, and peripheral set, though it has 8 KB Flash versus 8 KB here — essentially the same memory tier. The STM8S103F3P6TR offers a slightly richer feature set with the full STM8S peripheral complement. For a direct drop-in, verify the exact Flash and EEPROM sizes against your firmware image.

What is STM8S103F3P6TR's listed speed?

The core runs at 16 MHz, which is the maximum clock frequency for this STM8S family member. That is sufficient for typical 8-bit control tasks like sensor polling, PWM generation at audio-range frequencies, and UART communication up to 1 Mbps.

What compliance documentation is available for STM8S103F3P6TR?

STMicroelectronics provides RoHS and REACH compliance declarations for this part as standard. The product is lead-free and meets the EU RoHS directive. For specific certificates (UL, IEC), check the manufacturer's compliance portal or request them with your RFQ.