Model No: STM8L051F3P6TR

STMicroelectronics STM8L051F3P6TR

Manufacturer: STMicroelectronics
SEMICON NO.: STM8L051F3P6TR
Package: 20-TSSOP
Stock: In stock
Description: STM8 STM8L MCU IC 8-Bit 16MHz 8KB FLASH
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 Mfr      STMicroelectronics 
 Device Type 8-bit Ultra-Low-Power Microcontroller (MCU)
 Series / Family STM8L EnergyLite
 Core Processor  STM8 8-bit CISC core
 Maximum CPU Speed  16 MHz (Up to 16 MIPS)
 Program Memory (Flash)  8 KB (8K x 8)
 RAM (SRAM)  1 KB (1K x 8)
 EEPROM   256 Bytes (256 x 8)
 Analog-to-Digital Converter (ADC)  10-channel, 12-bit ADC
 General-Purpose I/O Pins   18
 Communication Interfaces I²C, IrDA, SPI, UART/USART
 Operating Voltage  1.8 V to 3.6 V
 Operating Temperature -40°C to +85°C
 Package 20-TSSOP
 Mounting Type Surface Mount 
 Compliance    
 RoHS Compliant
STM8L051F3P6TR 8-bit microcontroller STM8 MCU
The STM8L051F3P6TR, a value-line ultra-low-power 8-bit microcontroller from STMicroelectronics, is built around the enhanced STM8 Harvard architecture core with a 3-stage pipeline, delivering up to 16 MIPS peak performance at its maximum 16 MHz operating frequency while retaining the high code density advantage of CISC design, alongside a 24-bit linear addressing space optimized for minimal power consumption across all operation states. Packaged in a compact TSSOP-20 form factor for surface-mount assembly, this MCU integrates 8 KB of low-voltage single-supply flash memory, 1 KB of SRAM, 256 bytes of embedded data EEPROM, and a full set of peripheral resources including a 12-bit ADC with 10 channels, a real-time clock (RTC), two 16-bit timers, one 8-bit timer, standard I2C, SPI and USART communication interfaces, plus 18 high-current capable general-purpose I/O pins. 
It supports a 1.8 V to 3.6 V wide operating voltage range, covers an extended industrial temperature span from -40 °C to 85 °C, and features 5 dedicated low-power operation modes including Wait, Low Power Run, Low Power Wait, Active-halt with RTC and Halt, with an ultra-low 50 nA leakage per I/O pin and a fast 5 µs wakeup time from Halt state, alongside integrated low-power BOR reset with 5 selectable thresholds, POR/PDR and programmable voltage detector (PVD) for robust power supply management. Equipped with a non-intrusive SWIM debug interface that enables ultra-fast flash programming and real-time in-application debugging, its modular peripheral set maintains full compatibility with ST’s 32-bit MCU families, drastically reducing migration effort for developers who need to scale their designs to higher performance platforms later, making it a cost-effective, highly reliable choice for battery-powered IoT nodes, smart home devices, low-power sensor hubs, industrial handheld instruments and energy-efficient consumer electronics that demand long runtime on limited power.
Alternative ultra-low-power MCUs 
1. ATmega328P-AU by Microchip: A classic 8-bit AVR MCU with 32 KB flash, 1 KB SRAM, 1 K EEPROM, 16 MHz operating frequency and 1.8 V to 5.5 V wide voltage support, widely adopted in Arduino ecosystems and low-power embedded projects.
2. MSP430G2553IPW20R by Texas Instruments: An ultra-low-power 16-bit RISC MCU with 16 KB flash, 512 B SRAM, integrated 10-bit ADC and multiple low-power modes, optimized for battery-powered sensor and portable measurement applications.
3. N76E003AT20 by Nuvoton: A cost-effective 8051-based 8-bit MCU with 18 KB flash, 1 KB SRAM, 12-bit ADC, 1.8 V to 5.5 V operating range and TSSOP-20 package, ideal for low-cost consumer and industrial control scenarios.