STM8S003F3U6TR 8-bit MCU | 16MHz STM8 | UFQFPN-20 | STMicroelectronics

STM8S003F3U6TR

A 16 MHz STM8 value-line microcontroller integrating 8 KB Flash, 1 KB RAM, and 128 B data EEPROM with 10-bit ADC, timers, UART/SPI/I²C peripherals, packaged in a compact UFQFPN-20 outline, ideal for space-constrained appliance control, sensing nodes, and general embedded designs.

Product Description

Product Overview

The STM8S003F3U6TR is part of ST’s STM8S003 value line, offering essential functionality at very low system cost. It integrates 8 KB Flash, 1 KB RAM, and 128-byte true EEPROM with up to 100k write cycles. The 16 MHz STM8 core, timers, 10-bit ADC, UART/SPI/I²C peripherals, and watchdogs form a complete feature set in an ultra-compact 3×3 mm UFQFPN-20 package.

Key Features

16 MHz STM8 core with Harvard architecture and 3-stage pipeline
Memory: 8 KB Flash, 1 KB RAM, 128-byte EEPROM (100k cycles)
Analog: 10-bit ADC with 5 channels
Interfaces: UART, I²C, SPI
Timers: 1×16-bit advanced + 1×16-bit general-purpose + 1×8-bit basic
Low-power modes with Auto-Wakeup
Operating voltage range: 2.95–5.5 V
Up to 16 multifunction GPIOs
Package: UFQFPN-20 (3×3 mm), tape-and-reel

Product Applications

Small-appliance control boards (fans, purifiers, humidifier panels, etc.)
Sensor nodes and signal acquisition modules
Low-cost controllers, toys, and lighting control
Basic industrial control, relay driving, interface logic
Lightweight controller for battery-powered devices
Ultra-compact embedded applications requiring minimal PCB footprint

Technical Specifications

Parameter	Specification
Core	STM8 @ 16 MHz
Flash	8 KB
RAM	1 KB
EEPROM	128 B (100k erase/write cycles)
ADC	10-bit × 5 channels
Interfaces	UART / SPI / I²C
Timers	Adv 16-bit + GP 16-bit + Basic 8-bit
Supply Voltage	2.95–5.5 V
I/O	16 GPIO
Low-Power Modes	Wait / Active-halt / Halt
Package	UFQFPN-20（3×3 mm）
Operating Temperature	−40°C ~ +85°C

RFQ & Support

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