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STMicroelectronics STM8S105C4T3TR — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM8S105C4T3TR 8-bit MCU, 16 MHz, 16 KB Flash, 48-LQFP

MPNSTM8S105C4T3TR
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STMicroelectronics STM8S105C4T3TR, 8-bit STM8 core MCU, 16 MHz, 16 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 48-LQFP, -40 to 125°C, 2.95 to 5.5V supply.

$1.5704Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8S105C4T3TR specifications
ParameterValue
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)
RAM size2K x 8
Core size8-Bit
EEPROM size1K x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, SPI, UART/USART
Number of i (O)38
Core processorSTM8
Case48-LQFP
Data convertersA/D 10x10b
Program memory size16KB (16K x 8)

Product details

16 MHz 8-bit MCU with 16 KB Flash — what the memory map tells you

The 2 KB RAM is the tight spot: if your application runs a real-time OS or buffers more than a few hundred bytes of sensor data, budget the stack and heap carefully during firmware bring-up.

Extended temperature and wide supply — where this MCU fits

That 125°C ceiling covers under-hood electronics, engine bay modules, motor drive enclosures, and outdoor telecom gear where the junction temperature can climb well past 85°C. Brown-out detect and POR are integrated, so the reset circuit is minimal.

Peripheral set for serial communication and PWM control

The 10-channel 10-bit ADC handles analog inputs like potentiometers, thermistors, or current-sense resistors.

Frequently asked questions

What is STM8S105C4T3TR's listed speed?

The core runs at 16 MHz.