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STMicroelectronics STM8S103F2P3TR — Microcontrollers & Processors (MCU / MPU / DSP)
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RoHS Compliant · Lead-Free EIA-481 Standard
STMicroelectronics / Microcontrollers & Processors (MCU / MPU / DSP)

STM8S103F2P3TR 8-bit MCU, 16 MHz, 4 KB Flash, 20-TSSOP

MPN STM8S103F2P3TR
Active Spot Stock · 24-48h Dispatch 100% Original Sealed

STMicroelectronics STM8S103F2P3TR, STM8S series, 8-bit MCU, 16MHz, 4KB Flash, 1K x 8 RAM, 640 x 8 EEPROM, 20-TSSOP, -40°C to 125°C, 2.95V to 5.5V.

In Stock: 15 pcs
MOQ: 1 pcs
Logistics: DHL / FedEx DAP (Global Express · 3-7d) Russia & CIS DDP (Door-to-Door Cleared)
Dispatch: Shenzhen / HK
Unit Price (USD)
$3.03 / pc
Direct Purchase Ready
Volume Pricing Breaks Confirmed upon quotation
1+ pcs
$3.03
10+ pcs
$2.97
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$3.03 / ea

15 in stock — maximum per order · 3–4 days lead time

$2.97 / ea from 10 pcs
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100% Original Sealed 45x Microscope QC 30-Day Warranty · COC USD T/T & PI · DAP/DDP
[SPEC] Essential Parameters Snapshot Full Specifications (18)
Package / Case 20-TSSOP (0.173", 4.40mm Width)
Supply Voltage 2.95V ~ 5.5V
Speed / Frequency 16MHz
Memory / RAM 1K x 8

Full Technical Specifications

18 Parameters
STM8S103F2P3TR specifications
Parameter / AttributeSpecification / Value
SeriesSTM8S
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.95V ~ 5.5V
Operating temperature-40°C ~ 125°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 size4KB (4K x 8)
Series Sibling Variants

STMicroelectronics STM8S Series Models

Sibling variants, package options, and speed/density grades in this STMicroelectronics semiconductor series. Active Shenzhen warehouse allocation and rapid 24-48h dispatch.

STM8S003F3P6
STMicroelectronics STM8S003F3P6, STM8S series, 8-bit MCU, 16 MHz, 8 KB Flash, 1 KB RAM, 128 B EEPROM, 2.95 V to 5.5 V, 20-TSSOP, -40°C to 85°C.
View Availability & Specs
STM8S005C6T6TR
STMicroelectronics STM8S005C6T6TR, STM8S series 8-bit MCU, 16 MHz, 32 KB Flash, 2 KB RAM, 128 B EEPROM, 38 I/O, I²C/SPI/UART/LINbus, 2.95-5.5 V, -40 to 85°C, 48-LQFP.
View Availability & Specs
STM8S005K6T6C
STMicroelectronics STM8S series, STM8S005K6T6C, 8-bit MCU, 32 KB Flash, 2K x 8 RAM, 16 MHz, 2.95V-5.5V, 25 I/O, I2C/SPI/UART, A/D 7x10b, -40°C to 85°C, 32-LQFP.
View Availability & Specs
STM8S007C8T6TR
STMicroelectronics STM8S007C8T6TR, STM8S series 8-bit MCU, 24MHz core, 64KB Flash, 6KB RAM, 128B EEPROM, 38 I/O, 2.95V-5.5V, -40 to 85°C, 48-LQFP (7x7 mm), Tape & Reel.
View Availability & Specs
STM8S103F2M6
STMicroelectronics STM8S103F2M6, STM8S series 8-bit MCU, 16 MHz core, 4 KB Flash, 1K x 8 RAM, 640 x 8 EEPROM, 16 I/O, 20-SOIC, -40°C to 85°C, 2.95V to 5.5V.
View Availability & Specs
STM8S103F2P6
STMicroelectronics STM8S103F2P6 8-bit MCU, STM8S series, 16 MHz core, 4 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.
View Availability & Specs

Technical Details & Description

8-bit MCU for cost-sensitive control applications

The part integrates a 5-channel 10-bit ADC, a full set of timers with PWM, and wired interfaces including I²C, SPI, UART, LIN, and IrDA.

Memory and peripheral budget — what fits

The 4 KB Flash and 1 KB RAM are the hard constraints for firmware size. For comparison, a UART bootloader plus a simple state machine for a fan controller leaves about 2 KB free for application code. The 5-channel 10-bit ADC covers analog inputs like potentiometers or thermistors.

ST continues to manufacture the STM8S family, so there is no near-term end-of-life risk for production BOM lines. The part is ROHS3 compliant.

Frequently asked questions

What is the programming interface for STM8S103F2P3TR?

The STM8S103F2P3TR uses the SWIM (Single Wire Interface Module) protocol for programming and debugging. It requires a dedicated STM8 programmer or a tool like the ST-Link/V2. The SWIM pin is shared with a GPIO, so the bootloader entry condition must be respected.

What is the difference between STM8S103F2P3TR and STM8S103F3P3?

The primary difference is Flash memory size: the STM8S103F2P3TR has 4 KB of Flash, while the STM8S103F3P3 offers 8 KB. Both share the same 20-TSSOP package, pinout, and peripheral set. The F3 variant is the higher-density option for firmware that needs more code space.

STM8S103F2P3TR
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