This document provides information on a product in full production, introducing the features and characteristics of the STM8L051F3 Value Line, an 8-bit ultralow power MCU with 8-KB Flash, 256-byte data EEPROM, RTC, timers, USART, I2C, SPI, and ADC. It covers operating conditions, low power features, advanced STM8 core, reset and supply management, clock management, low power RTC, memories, DMA, 12-bit ADC, and timers.