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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM8S
Packaging Tray |
Core Processor STM8
Core Size 8-Bit
Speed 16MHz
Connectivity I2C, IrDA, LINbus, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 38
Program Memory Size 16KB (16K x 8)
Program Memory Type FLASH
EEPROM Size 1K x 8
RAM Size 2K x 8
Voltage - Supply (Vcc/Vdd) 2.95V ~ 5.5V
Data Converters A/D 10x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 48-LQFP (7x7)
Package / Case 48-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STMicroelectronics STM8S105C4T3 is an 8-bit MCU with 16KB flash and 2KB RAM. It operates at 16MHz from 2.95V to 5.5V, featuring PWM, brown-out reset, and watchdog. Housed in a 48-LQFP package, it is designed for automotive and industrial applications requiring -40°C to 125°C operation.

  • Extended temperature range: -40°C to 125°C for automotive reliability.
  • High voltage tolerance: 5.5V direct operation simplifies power design.
  • Rich timer peripherals: Multiple PWM channels for complex motor control.
  • Cost-effective 8-bit: Lower cost than 32-bit for simple control tasks.

Automotive Body Modules

The 125°C rating and 5.5V operation make it ideal for engine bay sensors and lighting control.

Industrial Motor Drives

Its 16MHz core with PWM timers drives BLDC motors in conveyor systems.

HVAC Controllers

Robust I/O and wide temperature range suit rooftop unit controllers in extreme climates.

Power Tools

High-temperature tolerance and PWM support variable-speed triggers in drills and saws.

Smart Meters

The 48-LQFP package provides enough pins for multi-phase energy measurement.

Agricultural Equipment

Dust-resistant design and wide voltage range handle harsh farm environments.

Q: What is the core architecture?
A: It uses the STM8 8-bit core running at 16MHz.
Q: What is the operating temperature range?
A: It operates from -40°C to 125°C, suitable for automotive.
Q: How much flash memory?
A: It has 16KB flash and 2KB RAM.
Q: What is the supply voltage?
A: It runs from 2.95V to 5.5V.
Q: Does it have PWM?
A: Yes, it includes multiple PWM timers.
Base Product Number : STM8S105C4
16KB Flash 16MHz 2KB RAM 8-bit MCU Automotive Industrial LQFP-48 PWM STM8 STMicroelectronics
Q: What is the core architecture?
A: It uses the STM8 8-bit core running at 16MHz.
Q: What is the operating temperature range?
A: It operates from -40°C to 125°C, suitable for automotive.
Q: How much flash memory?
A: It has 16KB flash and 2KB RAM.
Q: What is the supply voltage?
A: It runs from 2.95V to 5.5V.
Q: Does it have PWM?
A: Yes, it includes multiple PWM timers.