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STM8L151C6T3 - 8-bit 16MHz 32KB Flash Ultra-Low MCU | STMicroelectronics
STM8L151C6T3

STM8L151C6T3 - 8-bit 16MHz 32KB Flash Ultra-Low MCU | STMicroelectronics

The STMicroelectronics STM8L151C6T3 is an ultra-low-power 8-bit STM8L EnergyLite microcontroller featuring 32KB of embedded Flash, 2KB of SRAM, and 1KB of true data EEPROM, housed in a 48-pin LQFP (7x7mm) package. Operating from a 1.8V to 3.6V supply with a 16MHz STM8 CISC core, it targets battery-powered and energy-harvesting applications where quiescent current budget is critical to end-device lifetime. An ultra-low-power microcontroller (MCU) is a class of microcontroller optimized to minimize active and standby current consumption through aggressive clock gating, multiple low-power modes (Halt, Active-Halt, Wait, Run), and the ability to operate from sub-3V rails. STM8L MCUs sit within ST's broader portfolio that also includes the higher-integration STM8L152/4/5/8 lines which add LCD drivers, AES, and capacitive-sensing peripherals. The STM8L151C6T3 specifically uses a Harvard-architecture STM8S core with a 3-stage instruction pipeline, peripherals tied through a peripheral interconnect that allows independent clocking. Key features of the STM8L151C6T3 include a true 4.0 uA low-power Run mode, 1.45 uA Halt mode with RTC active, 350 nA Halt-without-RTC mode, integrated RTC, two 16-bit timers, one 8-bit timer, 12-bit ADC with up to 1 Msps, and 41 GPIOs across two ports. The device also includes an integrated LCD voltage booster option on the wider STM8L152 family, plus USART, SPI, and I2C peripherals for serial connectivity. Architecturally the STM8L151C6T3 uses the STM8 CISC instruction set with 16-bit instruction words, a 16-bit program counter, and a rich register file that lets the compiler generate compact code. Up to 32 MIPS at 16MHz, integrated clock tree with internal 16MHz HSI, and optional external crystal make it suitable for sensor hubs that wake periodically to read sensor data and return to Halt. The 32KB Flash supports in-application programming (IAP) over I2C/SPI/UART, allowing firmware upgrades without exposing the SWIM debug interface. Typical applications include battery-powered sensor nodes, wearables, electronic shelf labels, smart meters, and remote controls. Designers choose the STM8L151C6T3 when they need real EEPROM for parameter storage, robust <500 nA standby current, and a CISC core that produces dense assembly code for state machines. When designing with this device, evaluate quiescent current per power mode against the application's duty cycle. The 48-pin LQFP requires a 7x7mm PCB footprint with thermal pad routing guidelines per ST design guides. Use the STVP programmer and IAR/STM8 COSMIC toolchains for firmware development. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - particularly cross-family guidance for migration to STM32L0 when more MIPS or peripherals are required.

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STM8L151C6T6 - 8-bit Ultra-Low-Power MCU, 32KB Flash | STMicroelectronics
STM8L151C6T6

STM8L151C6T6 - 8-bit Ultra-Low-Power MCU, 32KB Flash | STMicroelectronics

The STM8L151C6T6 is an 8-bit ultra-low-power microcontroller from STMicroelectronics' STM8L EnergyLite family, featuring a 16 MHz STM8 core, 32 KB of Flash memory, 2 KB of RAM, and 1 KB of data EEPROM. Housed in a 48-pin LQFP (7x7 mm) package, this MCU is designed for energy-sensitive applications requiring long battery life and high integration. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, integrating a processor core, memory, and programmable peripherals. The STM8L151C6T6 belongs to the STM8L ultra-low-power family, which is optimized for applications where power consumption is critical, such as portable medical devices, smart sensors, and industrial monitoring. As a member of the STM8L series, it balances processing capability with energy efficiency, making it a key component in the power management hierarchy of embedded systems. Key features include an operating power supply range of 1.8V to 3.6V, multiple low-power modes (Wait, Low-power Run, Low-power Wait, Active-halt, and Halt), and a rich set of peripherals: USART, I2C, SPI, 12-bit ADC, 12-bit DAC, comparators, timers, and an RTC. The device also supports an LCD driver (on STM8L152 variants) and offers up to 41 I/O pins. Its ultra-low-power design achieves typical current consumption as low as 0.3 µA in Halt mode, making it ideal for battery-powered applications. The STM8L151C6T6 is built on ST's proprietary STM8 core architecture, which is designed for high code density and efficient execution. The device includes a flexible clock system with internal and external oscillators, a comprehensive set of timers (including a basic timer, general-purpose timers, and a low-power timer), and a 12-bit ADC with up to 28 channels. The integrated EEPROM allows for data storage without external memory, simplifying system design and reducing BOM cost. Typical applications include portable medical devices (e.g., glucose meters, pulse oximeters), smart sensors for IoT nodes, industrial process control, and battery management systems. The ultra-low-power modes and wide operating voltage range make it particularly suited for devices powered by coin cells or energy harvesting. The rich analog peripherals (ADC, DAC, comparators) enable direct sensor interfacing without external components. When designing with this MCU, pay attention to the power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 1 µF capacitor at the main power input. For lowest power consumption, use the Halt mode with the RTC running, and configure unused I/Os as analog inputs or outputs to avoid floating inputs. The STM8L151C6T6 is supported by ST's free development tools, including the ST Visual Develop (STVD) IDE and the STM8CubeMX configuration tool, which simplify firmware development and peripheral initialization.

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STM8L151C6U3 - 16MHz 32KB MCU | STMicroelectronics
STM8L151C6U3

STM8L151C6U3 - 16MHz 32KB MCU | STMicroelectronics

The STMicroelectronics STM8L151C6U3 is an ultra-low-power 8-bit STM8L microcontroller with a 16 MHz clock, 32 KB of Flash memory, 41 I/O pins, and a 48-pin UFQFPN package measuring 7 x 7 mm. It supports a 1.8 V to 3.6 V supply range and integrates interfaces including I2C, SPI, and UART for compact embedded-control designs. An ultra-low-power microcontroller is an embedded processing platform optimized to minimize energy consumption during active operation, sleep, and standby states. The STM8L family belongs to the hierarchy of 8-bit microcontroller, embedded controller, semiconductor, and power-conscious IoT hardware. Its low-power architecture is useful for battery-operated sensors, portable instruments, industrial monitors, and connected devices that spend substantial time waiting for an event or waking a peripheral. The STM8L151C6U3 combines 32 KB of Flash with 2 KB of SRAM and a maximum 16 MHz operating frequency. The device includes 41 I/O pins, an RTC, timers, 1 KB of data EEPROM, and communication interfaces identified in the product documentation, including I2C, SPI, and UART. Its 1.8 V to 3.6 V operating range supports both 2 V and 3.3 V system rails while providing flexibility for low-voltage sensing and portable equipment. The medium-density STM8L151x4/6 and STM8L152x4/6 architecture places a common peripheral set across the STM8L platform. This modular organization supports design reuse when moving between related devices, although firmware, memory capacity, package outlines, and peripheral availability must still be checked for every planned substitution. The 48-pin UFQFPN footprint is intended for compact surface-mount assemblies rather than through-hole prototyping. Typical applications include low-power sensor nodes, compact industrial data loggers, battery-powered measurement instruments, access-control terminals, and embedded communication modules. I2C and SPI suit sensors and external transceivers, UART supports point-to-point host links, and the RTC provides timekeeping for systems that must retain timestamps during low-activity periods. Design around the complete pin assignment in the manufacturer datasheet rather than relying on generic UFQFPN conventions. Confirm exposed-pad connection, supply decoupling, programming access, reset behavior, and every peripheral signal before layout release. The exact UFQFPN-48 drawing is outside the supported package-diagram library, so the page uses a neutral package visual and the pin table remains null. This page consolidates the verified manufacturer and distributor product information with lifecycle status, interface coverage, application guidance, and same-family drop-in comparisons. It also separates documented facts from attributes that require a final review against the exact ordering code and firmware revision.

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STM8L151C6U6 - 16MHz 32KB Low-Power MCU | ST
STM8L151C6U6

STM8L151C6U6 - 16MHz 32KB Low-Power MCU | ST

The STMicroelectronics STM8L151C6U6 is an ultra-low-power 8-bit microcontroller with a 16 MHz clock, 32 KB of Flash memory, and a 48-pin UFQFPN package measuring 7 x 7 mm. It belongs to the STM8L EnergyLite family and provides 41 I/O ports, 1 KB of data EEPROM, an LCD controller, real-time clock, and timers. Its operating supply range of 1.8 V to 3.6 V supports low-voltage embedded systems where energy efficiency and compact area are important. An ultra-low-power microcontroller is an embedded controller optimized to minimize energy consumption while retaining the processing, sensing, communication, and timing resources required by a battery-operated product. The STM8L series combines an 8-bit architecture with low-power operating modes, making it suitable for applications that spend substantial time in sleep or standby rather than continuously calculating. In the system hierarchy, this device belongs to the MCU and embedded-controller class within semiconductor components. The STM8L151C6U6 provides 32 KB of programmable Flash for firmware, 1 KB of nonvolatile data EEPROM for configuration or retained records, and 41 I/O ports. Its maximum clock frequency of 16 MHz is suitable for control loops, keypad and display handling, sensor sampling, and low-speed communication tasks. The 1.8 V to 3.6 V supply range permits use with common low-energy rails, while the 48-pin package exposes substantially more I/O than smaller STM8L variants. The STM8L151x4 and STM8L151x6 devices use a modular peripheral arrangement, allowing designers to reuse development tools and familiar software practices across related STM8L families. Integrated timing, LCD, RTC, and EEPROM resources reduce external component count in compact instruments. The 8-bit architecture simplifies control-oriented firmware while supporting the event timing and state management needed for energy-conscious embedded products. Typical uses include low-energy sensor nodes, industrial monitoring modules, compact metering instruments, LCD-based control panels, wearable accessories, building-automation endpoints, and battery-powered handheld equipment. A design can allocate Flash to application code, use EEPROM for persistent settings, and leverage the RTC and timers for periodic measurement or display updates. The 41 I/O ports also allow direct connection of sensors, buttons, indicators, and display-control signals. Design the PCB with short, stable supply and ground paths, and place decoupling capacitance close to the appropriate power pins. Confirm every signal assignment against the manufacturer pin description before routing the dense 7 x 7 mm footprint. Account for the MCU's low-power states, wake sources, clock configuration, and startup behavior during firmware development rather than treating it as a conventional always-on controller. This product overview consolidates the core STM8L151C6U6 specifications, verified lifecycle information, application guidance, and same-family replacement context. The accompanying comparison and design notes help engineers assess footprint compatibility, memory requirements, low-power behavior, and application fit before beginning a board-level design.

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STM8L151C8T3 - 16MHz 64KB Flash MCU | STMicroelectronics
STM8L151C8T3

STM8L151C8T3 - 16MHz 64KB Flash MCU | STMicroelectronics

The STMicroelectronics STM8L151C8T3 is an 8-bit STM8L EnergyLite microcontroller with a 16 MHz maximum clock, 64 KB of Flash memory, and a 48-LQFP 7 x 7 mm package. It operates from 1.8 V to 3.6 V, supports 41 I/O ports, and is specified across the -40 °C to +125 °C temperature range. The CISC-based MCU is designed for compact, low-power embedded systems that require substantial Flash storage and a generous pin count. An ultra-low-power microcontroller is a semiconductor designed to minimize energy consumption while executing control logic and managing external peripherals. The STM8L family belongs to the hierarchy of MCU, embedded processor, integrated circuit, and semiconductor. Compared with general-purpose microcontrollers, devices in this category emphasize constrained power budgets, deterministic control, and integration of communication, timing, and analog functions on a single device. The STM8L151C8T3's principal characteristics include 64 KB of Flash, a 16 MHz clock, 41 available I/O ports, and operation from 1.8 V through 3.6 V. Its 48-LQFP package provides a practical balance between component size and external connectivity, making it suitable for boards that need more pins than a small-outline package can offer. The stated temperature range supports applications in consumer, industrial, instrumentation, and embedded control equipment. The STM8L core uses a CISC architecture and integrates embedded Flash rather than requiring an external program-memory device. This combination simplifies board layout in cost-sensitive embedded products while preserving sufficient storage for firmware, configuration data, and application parameters. The 1.8 V minimum operating voltage also allows the device to operate from low-energy sensor nodes and modern 3.3 V system rails without requiring a separate level-conversion stage for compatible peripherals. Typical applications include connected sensor modules, compact industrial controllers, building and access-control equipment, metering systems, consumer accessories, and low-power IoT devices. The 48-pin package is especially useful when a design needs multiple digital inputs and outputs while retaining a relatively small 7 x 7 mm body. Firmware should be configured to use the appropriate clock, low-power modes, and peripheral resources for the selected board. A key design consideration is ensuring that every supply rail remains within the 1.8 V to 3.6 V operating range, including transients caused by switching loads or attached peripherals. Firmware should also avoid leaving unused I/O pins in an undefined state. For battery-powered products, verify the selected external components and communication interfaces against the system's current budget rather than estimating energy use from the maximum clock rate alone. This product page consolidates the core MCU specifications, verified sourcing details, engineering guidance, and a same-footprint family comparison. It also explains where the STM8L151C8T3 fits relative to the closely related STM8L152C8T6TR while keeping package, memory, voltage, and temperature requirements central to replacement decisions.

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STM8L151C8T6 - 16MHz 64KB Ultra-Low-Power MCU | ST
STM8L151C8T6

STM8L151C8T6 - 16MHz 64KB Ultra-Low-Power MCU | ST

The STMicroelectronics STM8L151C8T6 is an 8-bit ultra-low-power microcontroller operating at up to 16 MHz, with 64 KB of Flash memory, 2 KB of data EEPROM, and a 48-LQFP 7 x 7 mm package. The device includes 41 I/O ports and operates from 1.8 V to 3.6 V, making it suitable for compact, power-constrained embedded systems. An ultra-low-power microcontroller is an integrated circuit designed to execute embedded-control functions while minimizing active and standby energy consumption. The STM8L family belongs to the hierarchy of microcontrollers, embedded processors, and semiconductors. It combines a general-purpose CPU, nonvolatile program memory, data EEPROM, timers, an RTC, LCD support, and communication peripherals in one package. Key verified features of the STM8L151C8T6 include a 16 MHz maximum clock, 64 KB Flash, 4 KB RAM, and 2 KB data EEPROM. Its 1.8 V to 3.6 V operating range supports 1.8 V, 2.5 V, and 3.3 V supply arrangements. The 41 I/O pins provide substantial interface capacity for sensors, displays, actuators, and low-speed serial peripherals, while the 48-LQFP package provides a practical surface-mount footprint. The STM8 architecture uses an 8-bit CISC core and targets embedded-control workloads rather than high-throughput application processing. The RTC supports timekeeping-oriented designs, LCD-related resources support display-oriented products, and the timer set supports periodic measurement, motor-control, and industrial timing functions. The 64 KB Flash capacity provides room for application firmware and boot logic, while EEPROM preserves small amounts of calibration or configuration data. Typical applications include battery-operated sensors, compact industrial controllers, utility meters, access terminals, low-power display modules, and embedded appliances. The combination of low-voltage operation, 41 I/O ports, EEPROM, RTC, and LCD support is particularly useful when a design needs several control functions without using a larger microcontroller or external peripheral devices. Designers should verify the complete pin configuration, peripheral availability, clock tree, and low-power modes against the STM8L151/152 documentation before layout. The 48-LQFP package also requires adequate solderable pad geometry and careful decoupling of the 1.8 V to 3.6 V supply. Exact timing, current consumption, and absolute electrical limits should be taken from the manufacturer documentation rather than inferred from distributor summaries. This product page consolidates verified specifications, sourcing information, package details, application guidance, and a technically qualified replacement assessment. Unlike a basic distributor listing, it distinguishes confirmed drop-in suitability from related STM8 devices and explicitly identifies parameters that still require confirmation from the manufacturer documentation.

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STM8L151C8T7 - 16MHz 64KB Ultra-Low-Power MCU | STMicroelectronics
STM8L151C8T7

STM8L151C8T7 - 16MHz 64KB Ultra-Low-Power MCU | STMicroelectronics

The STMicroelectronics STM8L151C8T7 is an ultra-low-power 8-bit microcontroller with a 16 MHz CPU, 64 KB of embedded Flash memory, and a 48-LQFP package measuring 7 mm by 7 mm. It operates from 1.8 V to 3.6 V and provides 41 I/O ports. The device belongs to the STM8L EnergyLite family and combines low-voltage operation, embedded EEPROM, and single-supply Flash programming in a compact surface-mount package. An ultra-low-power microcontroller is a semiconductor designed to minimize energy consumption while providing programmable control, communication interfaces, and digital I/O. The STM8L15xx family sits within the broader hierarchy of 8-bit microcontroller, embedded controller, semiconductor, and power-managed electronic system. Its low operating voltage and energy-saving modes are useful when the target equipment must operate from a single coin-cell cell, rechargeable cell, or compact energy-harvesting source. The STM8L151C8T7 provides 64 KB of Flash for firmware, 16 MHz processing capability, and 41 I/O ports for external sensors, indicators, and control interfaces. Embedded EEPROM supports parameter retention without consuming the Flash program area. An integrated SWIM debug interface provides in-application debugging and fast Flash programming, helping shorten firmware development and production-test cycles while avoiding a separate external debug connector. STMicroelectronics describes the STM8L15xx6/8 devices as ultra-low-power products built around an enhanced STM8 CPU core. The combination of low-voltage operation, extensive GPIO, embedded nonvolatile memory, and a 48-pin LQFP makes the part suitable for designs that need more I/O than a compact 20-pin or 32-pin microcontroller package can provide. The 7 mm by 7 mm outline also preserves routing flexibility compared with a larger leaded package. Typical uses include compact industrial sensing, energy-conscious instrumentation, low-power data loggers, building controls, and connected measurement modules. The 41 I/O ports can support digital inputs, alarm outputs, display segments, and communication transceivers, while the 16 MHz CPU handles protocol formatting, acquisition control, and local system logic. Its 1.8 V to 3.6 V supply range also allows direct operation from common low-voltage rails without a higher-voltage interface requirement. When laying out the board, keep the SWIM programming interface accessible and follow the manufacturer pin and land-pattern guidance exactly. Confirm the selected Flash size, EEPROM workflow, clock setup, and low-power mode requirements in firmware before production. Because this MCU combines many I/O functions in a 48-LQFP package, careful decoupling and signal routing remain essential for reliable operation across the full 1.8 V to 3.6 V supply range. This page organizes the key electrical characteristics, package information, design considerations, and qualified replacement options around the STM8L151C8T7. It also identifies where firmware, PCB, or supply-voltage changes are required before considering another STM8L15xx device as a drop-in replacement.

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STM8L151C8U3 - 16MHz Ultra-Low-Power 8-Bit MCU | STMicroelectronics
STM8L151C8U3

STM8L151C8U3 - 16MHz Ultra-Low-Power 8-Bit MCU | STMicroelectronics

The STMicroelectronics STM8L151C8U3 is an ultra-low-power 8-bit CISC microcontroller with a 16 MHz clock, 64 KB of Flash memory, 2 KB of RAM, and 41 I/O ports in a 48-pin UFQFPN package with an exposed pad. It operates from 1.8 V to 3.6 V and combines an STM8 CPU core with low-power design features for compact, energy-conscious embedded systems. A microcontroller is a programmable system-on-chip that integrates a CPU core, program memory, data memory, peripherals, and I/O into one package. The STM8L151 belongs to the STM8L ultra-low-power MCU family, placing it within the hierarchy of 8-bit microcontroller, embedded controller, and semiconductor. Its combination of 64 KB Flash and 16 MHz processing is intended for control-intensive products requiring more program storage than the smallest STM8 devices. The 64 KB Flash provides room for application firmware, while the 16 MHz maximum clock supports responsive control tasks. A 41-port GPIO complement allows the device to connect sensors, indicators, communications interfaces, and discrete actuators. The manufacturer describes the STM8L15xx6/8 range as ultra-low-power, and the verified distributor listing identifies this member as an 8-bit MCU optimized around the 16 MHz clock and low-energy operation. The 48-pin UFQFPN package uses a 7 mm by 7 mm body and includes an exposed pad for improved package-level heat spreading. The exposed pad is normally connected to the ground plane in accordance with the manufacturer's land-pattern and thermal guidance. The 1.8 V to 3.6 V operating range supports low-voltage embedded systems, although the final design must preserve the device's supply-voltage and input-level limits for every connected peripheral. Typical design roles include compact sensor-hub controllers, battery-operated condition-monitoring equipment, low-power industrial controls, portable accessories, and embedded modules. The STM8L151C8U3 is most appropriate when an 8-bit architecture, 64 KB Flash, a relatively high I/O count, and ultra-low-power operation are more important than using a higher-cost 32-bit MCU with a much larger memory and peripheral footprint. Designers should confirm the exact pin functions, exposed-pad connection, decoupling requirements, clock configuration, and peripheral pin multiplexing against the official STM8L151C8 documentation. Software migration or alternate sourcing should not be based only on package dimensions or Flash capacity; peripheral assignments, electrical limits, and the complete 48-pin land pattern must also match. This page consolidates verified manufacturer and distributor information with package-aware replacement guidance, application fit, and engineering cautions. It is intended to make device selection and sourcing more efficient while clearly separating documented STM8L151C8U3 facts from details that require direct datasheet verification.

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STM8L151C8U6 - 16MHz 64KB Ultra-Low-Power MCU | STMicroelectronics
STM8L151C8U6

STM8L151C8U6 - 16MHz 64KB Ultra-Low-Power MCU | STMicroelectronics

STMicroelectronics STM8L151C8U6 is an ultra-low-power 8-bit microcontroller with a 16 MHz clock, 64 KB of Flash memory, and a 48-pin UFQFPN 7 x 7 mm package. The device belongs to the STM8L EnergyLite family and combines an enhanced STM8 CPU core with 41 I/O ports for compact control, sensing, and communications applications operating from a 1.8 V to 3.6 V supply. An ultra-low-power microcontroller is a semiconductor device designed to minimize energy consumption during active processing and low-power operation. Within the product hierarchy, the STM8L151C8U6 is an 8-bit MCU, a low-power microcontroller, and a member of the STM8L EnergyLite family of embedded processing devices. This positioning makes it suitable for battery-powered equipment in which duty-cycle efficiency, fast startup, and integrated peripherals can reduce the need for external components. Key device characteristics include a maximum clock frequency of 16 MHz, 64 KB of programmable Flash, 4 KB of RAM as listed for this device, and 41 I/O ports. Its 1.8 V to 3.6 V operating supply range supports both 1.8 V and 3.3 V system rails. The 48-pin UFQFPN package exposes substantially more I/O than smaller STM8L packages while retaining a compact 7 x 7 mm footprint suitable for space-constrained industrial and consumer products. The enhanced STM8 CPU core provides an 8-bit processing architecture optimized for control tasks rather than high-performance computing. Flash memory retains firmware when power is removed, while RAM supports working data and stack operations. The manufacturer identifies the STM8L15xx6 and STM8L15xx8 devices as ultra-low-power members of the STM8L platform; applications should therefore validate both active-current and standby-current requirements against the complete operating mode used in the final product. Typical applications include low-power sensor controllers, compact industrial data-acquisition modules, battery-operated measurement instruments, connected IoT endpoints, compact motor-control products, and low-power communications equipment. The 41 available I/O ports are useful for digital interfaces, status indicators, control signals, and external peripheral connections, while the 16 MHz clock provides adequate throughput for typical embedded-control workloads. The main design consideration is balancing low-power behavior, pin availability, and board density. Keep decoupling capacitors close to the supply pins, follow the UFQFPN exposed-pad and land-pattern requirements in the manufacturer documentation, and confirm that all connected peripherals remain compatible with the selected 1.8 V or 3.3 V supply. Review the complete pin-description table before assigning every exposed connection. This page consolidates the manufacturer device overview, package and memory details, sourcing information, verified drop-in alternatives, comparison parameters, and practical integration guidance. It supports faster engineering selection while keeping procurement requests centralized through the Request a Quote form on this page.

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STM8L151F2P6 - 16MHz 4KB Ultra-Low-Power MCU | ST
STM8L151F2P6

STM8L151F2P6 - 16MHz 4KB Ultra-Low-Power MCU | ST

STMicroelectronics STM8L151F2P6 is an 8-bit ultra-low-power microcontroller with a 16 MHz maximum clock, 4 KB Flash memory, 1 KB RAM, and a 20-pin TSSOP package. The STM8L151F2P6 supports a 1.8 V to 3.6 V supply range and provides up to 16 MIPS while retaining the CISC architecture and peripheral integration of the STM8L platform. An ultra-low-power microcontroller is an embedded controller designed to maintain useful processing, sensing, and communication functions while minimizing energy use during idle, sleep, and stop operating states. Within the product hierarchy, the STM8L151F2P6 is an 8-bit MCU, an embedded processing IC, and a member of the STM8L EnergyLite family. This makes it suitable for compact, battery-operated or energy-conscious systems in which low active and standby power are more important than high arithmetic throughput. Key device attributes include 16 MHz operation, 4 KB Flash, 1 KB RAM, a 1.8 V to 3.6 V supply range, and a 20-pin TSSOP package. The enhanced STM8 CPU core can execute up to 16 MIPS at 16 MHz, giving embedded control loops more scheduling capacity than lower-frequency 8-bit implementations. Its low-density integration also helps reduce board area, external memory requirements, and system complexity for compact control products. The STM8L151F2P6 belongs to a CISC-based STM8 architecture optimized for efficient control code rather than application-processor workloads. Its 4 KB Flash stores firmware while 1 KB RAM supports working state, stack operations, and peripheral buffering. The manufacturer product page identifies the STM8L151F2/3 low-density family as an ultra-low-power MCU family, while distributor data confirms the specific device's 8-bit architecture, 16 MHz clock, memory configuration, and package format. Typical applications include low-power sensor nodes, compact industrial controls, battery-powered instruments, energy-metering peripherals, home automation endpoints, and embedded monitoring modules. The 20-pin TSSOP package is particularly useful where a conventional large QFP footprint would be unnecessary but exposed-package or fine-pitch assembly would also be undesirable. Firmware and peripheral configuration should still be checked against the complete manufacturer datasheet before production use. Designers should account for the 1.8 V to 3.6 V operating range, verify that every connected sensor and actuator supports the selected rail, and confirm the exact pin functions in the manufacturer pinout. Low-power operation depends on firmware, clock configuration, peripheral activity, and board leakage, so measured current cannot be inferred from the headline 16 MHz specification alone. This product record combines the verified manufacturer and distributor information, a lifecycle assessment, procurement pricing, family alternatives, and practical selection guidance. It is intended to help engineers identify whether the 20-pin STM8L151F2P6 offers the required balance of Flash, RAM, speed, voltage, package size, and ultra-low-power behavior before beginning PCB and firmware development.

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STM8L151F3P3 - 16MHz 8KB Flash MCU | STMicroelectronics
STM8L151F3P3

STM8L151F3P3 - 16MHz 8KB Flash MCU | STMicroelectronics

The STMicroelectronics STM8L151F3P3 is an 8-bit ultra-low-power STM8L EnergyLite microcontroller with a 16 MHz enhanced STM8 CPU core, 8 KB Flash memory, and a 20-pin TSSOP package. Its headline specifications are 16 MHz operation, 8 KB Flash memory, and a 1.8 V to 3.6 V supply range, making it suitable for compact, battery-operated embedded systems. What is an ultra-low-power microcontroller? An MCU integrates a processor, programmable memory, peripherals, and I/O on one semiconductor device. The STM8L family is designed for energy-efficient embedded control, where the system may spend substantial time in low-power states between sensor readings, user actions, or communications. In the hierarchy of electronic components, an MCU is a semiconductor, a microcontroller, and an embedded processing device used for control and automation. The verified device information identifies an enhanced STM8 CPU core capable of up to 16 MIPS at 16 MHz, 8 KB Flash organized as 8K x 8, and 1 KB of RAM as indicated by the comparison data. The 20-pin TSSOP package supports surface-mount assembly and is specified for an operating supply of 1.8 V to 3.6 V. The MCU is positioned for low-power embedded control rather than high-performance computing, providing a balanced combination of processing speed, memory, and compact packaging. The STM8L151F3P3 can be used in sensor nodes, battery-powered instruments, simple industrial controls, consumer accessories, and low-power monitoring systems. Its 8-bit architecture is appropriate for sequential control, parameter reading, state management, and communication tasks where application complexity does not require a larger processor. Its TSSOP-20 package is also useful when a design needs a modest pin count and a conventional leaded surface-mount footprint. When designing a board around the STM8L151F3P3, verify the exact pin assignments and peripheral multiplexing in the manufacturer datasheet before finalizing the PCB. Provide stable decoupling near the power pins, confirm the clock and reset requirements, and account for the 1.8 V to 3.6 V supply range. Firmware should also be tested across the intended temperature, voltage, and low-power operating conditions. This product page combines the verified manufacturer and distributor information with practical sourcing, comparison, and design guidance. Pricing and availability should be checked with authorized distributors, while the manufacturer datasheet remains the controlling reference for electrical limits, pinout, memory behavior, and peripheral operation.

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STM8L151F3P6 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics
STM8L151F3P6

STM8L151F3P6 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics

The STMicroelectronics STM8L151F3P6 is an 8-bit ultra-low-power microcontroller with up to 16 MIPS at 16 MHz, 8 KB of Flash memory, and a 20-pin TSSOP package. It is designed for compact, power-constrained embedded systems requiring low-power operation, RTC functions, timers, and integrated data EEPROM. The STM8L151x2/3 family uses an enhanced STM8 CPU core with a CISC architecture and optimized low-power modes. An ultra-low-power microcontroller is a semiconductor device designed to minimize energy consumption during standby, sleep, and active operation. The STM8L151x2/3 family combines an 8-bit CPU core, Flash program memory, EEPROM, timers, GPIO, communication peripherals, and low-power management in one compact package. This device family is suitable when a controller must balance fast control-loop execution with restricted energy budgets. The STM8L151F3P6 provides 8 KB of Flash, up to 256 bytes of EEPROM according to the device description, and operation up to 16 MHz. It is identified as an STM8L EnergyLite microcontroller in distributor listings and is available in a 20-pin TSSOP package. The part is intended for low-voltage embedded designs where the MCU must handle control, sensing, communication, and periodic sensing without a high-power processor. The enhanced STM8 core provides increased processing power while retaining CISC advantages such as compact instruction representation and efficient code density. A 24-bit linear addressing space supports organized access to memory-mapped peripherals. The low-power architecture helps designers select suitable operating modes during idle periods and wake the controller for defined events or scheduled tasks. Typical applications include low-power sensor nodes, industrial monitoring modules, battery-powered instruments, building automation controls, portable measurement equipment, and embedded consumer devices. The 20-pin TSSOP package is useful for PCB layouts where a relatively small through-hole-style surface-mount footprint is preferred and when the design does not require a large high-pin-count microcontroller. When designing around STM8L151F3P6, verify the exact peripheral configuration, clock setup, pin multiplexing, memory limits, and low-power behavior in the manufacturer datasheet. The P6 suffix and package markings should be confirmed against the ordered device, and firmware should be tested for all required sleep, wake-up, RTC, and communication paths before production release. This page combines the verified manufacturer product information, distributor specifications, package details, and application-oriented design guidance. It also distinguishes electrically similar devices from true pin-for-pin drop-in alternatives, helping engineers make a defensible sourcing or redesign decision rather than treating unrelated low-power MCUs as direct substitutes.

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STM8L151G2U6 - 8-Bit 16MHz 4KB MCU | STMicroelectronics
STM8L151G2U6

STM8L151G2U6 - 8-Bit 16MHz 4KB MCU | STMicroelectronics

The STMicroelectronics STM8L151G2U6 is an 8-bit STM8L EnergyLite microcontroller with a 16 MHz clock, 4 KB of Flash program memory, and a 28-pin UFQFPN package measuring 4 x 4 mm. The device is designed for compact embedded-control systems where low power consumption, a small footprint, and integrated serial peripherals are important. Its operating voltage is listed from 1.8 V to 3.6 V, supporting battery-powered and low-voltage industrial equipment. The STM8L151 family belongs to the 8-bit microcontroller hierarchy: MCU, embedded microcontroller, low-power microcontroller, and semiconductor. This positioning places it between simple logic controllers and more capable 32-bit application processors. It is suitable for sensing, control, communication, and actuator-management functions where a dedicated 8-bit core can provide adequate performance without the cost, power, and board area of a higher-end processor. The STM8L151G2U6 combines a 16 MHz core with 4 KB of Flash memory and 41 I/O ports according to the product listing information. The STM8L151x4 and STM8L151x6 family documentation also identifies standard communication interfaces including SPI, I2C, and USART, along with an 8-bit timer. These peripherals support common embedded-system tasks such as sensor acquisition, external memory access, industrial serial links, and simple control loops. The exact peripheral counts and pin-level functions for the STM8L151G2U6 must be confirmed against the manufacturer pinout and datasheet before layout is released. Typical applications include compact environmental sensors, battery-powered condition-monitoring devices, LED-control modules, small motor-control boards, and low-power industrial instrumentation. The 1.8 V to 3.6 V supply range allows operation from single-cell energy-storage systems when the downstream regulator and cell chemistry are compatible. The 4 x 4 mm UFQFPN package also supports dense board layouts, although its fine pitch and exposed-pad requirements demand careful PCB design and assembly planning. For a new design, treat the STM8L151G2U6 as a low-power, compact, 8-bit control solution rather than a high-performance application processor. Confirm startup behavior, clock configuration, peripheral assignments, flash endurance requirements, and the exposed-pad connection in the manufacturer documentation. This page summarizes the verified device identity, package, memory, speed, voltage, and lifecycle information while highlighting the engineering checks that matter before schematic capture and PCB release.

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STM8L151G3U3 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics
STM8L151G3U3

STM8L151G3U3 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics

STMicroelectronics STM8L151G3U3 is an ultra-low-power 8-bit STM8L EnergyLite microcontroller with an enhanced STM8 CPU core, up to 16 MIPS at 16 MHz, and 8 KB of Flash memory. The device operates from 1.8 V to 3.6 V and is offered in a 28-pin UFQFPN package measuring 4 mm by 4 mm. Its 41 I/O ports support space-constrained embedded systems requiring low-power operation and a compact surface-mount footprint. An ultra-low-power microcontroller is a semiconductor designed to minimize energy consumption during active processing, standby, and low-power operating states. The STM8L family belongs to the STM8 8-bit MCU family and combines an EnergyLite architecture with integrated communications peripherals. This makes it suitable for battery-operated sensors, compact control modules, and connected industrial equipment where energy efficiency and fast wake-up behavior matter more than high arithmetic throughput. The STM8L151G3U3 combines a 16 MHz maximum clock with 8 KB of Flash, I2C, SPI, UART, and PWM capabilities, and up to 41 I/O ports. Its 1.8 V to 3.6 V supply range supports low-voltage embedded designs, while the 28-pin UFQFPN package limits board area. The enhanced STM8 CPU delivers up to 16 MIPS, giving useful processing performance for control loops, communication handling, and local peripheral management. The device is designed around the STM8L low-power architecture, allowing firmware to balance processing activity with low-power modes. I2C and SPI support digital sensors and external storage, UART supports point-to-point serial links, and PWM supports motor, dimming, and proportional-control functions. Because software, pin multiplexing, clock configuration, and low-power behavior are closely integrated, designers should follow the manufacturer datasheet when assigning alternate-function pins and configuring clocks. Typical applications include compact environmental sensors, low-power industrial condition-monitoring nodes, building controls, battery-powered accessories, actuator controllers, and connected measurement instruments. The 41 I/O ports are particularly useful when a design must connect multiple discrete inputs and outputs while avoiding a larger package. For designs requiring more memory, peripheral breadth, or a different footprint, the STM8L family can be evaluated before committing the PCB layout. A critical implementation consideration is the exposed-pad and thermal arrangement of the UFQFPN package. Place the required input and output decoupling capacitors close to their associated pins, follow the manufacturer pin-definition table when routing PCB traces, and expose the pad through a properly sized copper land pattern. Verify the final board against the package drawing and recommended land pattern rather than relying only on the nominal 4 mm by 4 mm body size. This product page combines the manufacturer's device information, distributor listing details, application engineering guidance, package considerations, and drop-in replacement analysis. It is designed to help engineers evaluate the STM8L151G3U3 against same-package alternatives before committing to a compact, low-power PCB design.

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STM8L151G3U6 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics
STM8L151G3U6

STM8L151G3U6 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics

The STMicroelectronics STM8L151G3U6 is an ultra-low-power 8-bit microcontroller with a 16 MHz STM8 CPU, 8 KB Flash memory, 1 KB RAM, and a 28-pin UFQFPN 4x4 mm package. Its operating supply range is 1.8 V to 3.6 V, and the enhanced STM8 core provides up to 16 MIPS at 16 MHz for energy-efficient embedded control. The device is identified as an STM8L EnergyLite MCU and is suitable for compact, battery-operated systems. An ultra-low-power microcontroller is a semiconductor controller designed to minimize energy consumption while monitoring sensors, controlling actuators, and managing communication or timing functions. The STM8L family belongs to the 8-bit microcontroller hierarchy, where an embedded MCU integrates processor core, memory, GPIO, timers, and communication peripherals on one package. This integration reduces component count and supports portable, low-power industrial, sensor, consumer, and medical-control designs. Key verified features include 8 KB of Flash organized as 8K x 8, 16 MHz maximum clocking, 8-bit processing, a 1.8 V to 3.6 V supply range, and 28-pin UFQFPN packaging. The manufacturer describes the STM8L151x2/3 devices as offering increased processing power while maintaining an ultra-low-power architecture. The small 4x4 mm package supports space-constrained designs, while the exposed-pad construction requires careful PCB thermal and layout implementation. The STM8L151G3U6 is primarily controlled by its enhanced 8-bit STM8 core. Its memory arrangement provides a practical balance between firmware storage and working RAM for compact control tasks. The 16 MHz operating frequency supports responsive firmware execution, while the low-voltage operating range allows operation from common low-energy supply rails when the system power architecture supports them. Typical applications include battery-powered sensor nodes, compact industrial controllers, low-power IoT equipment, building automation modules, portable measurement products, and small consumer-device controllers. The device is particularly appropriate when board area, standby energy use, and a simple 8-bit control platform matter more than high arithmetic throughput. Designers should place decoupling capacitors close to the supply pins, follow the manufacturer’s exposed-pad land-pattern requirements, and verify signal-level compatibility with connected peripherals. Do not infer pin functions from the package count alone; use the official STM8L151G3 documentation for the complete pinout and exposed-pad connection. This page combines verified distributor and manufacturer information, same-family drop-in alternatives, comparison data, and practical design guidance for engineers evaluating STM8L151G3U6 sourcing and board compatibility.

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STM8L151G4U3 - 16MHz 16KB Ultra-Low-Power MCU | STMicroelectronics
STM8L151G4U3

STM8L151G4U3 - 16MHz 16KB Ultra-Low-Power MCU | STMicroelectronics

The STMicroelectronics STM8L151G4U3 is an ultra-low-power 8-bit STM8L microcontroller with a 16 MHz maximum CPU frequency, 16 KB of embedded Flash memory, and a 28-pin UFQFPN package measuring 4 mm by 4 mm. It operates from a 1.8 V to 3.6 V supply range, making it suitable for compact, battery-operated, and energy-conscious embedded systems. An ultra-low-power microcontroller is an integrated circuit designed to execute firmware while minimizing energy consumption. The STM8L family combines an 8-bit CPU, embedded nonvolatile memory, analog and digital peripherals, and low-power operating modes in one device. This positions the STM8L151G4U3 within the hierarchy of microcontroller, embedded processor, semiconductor, and low-power system-on-chip design. Key features include 16 KB of Flash, a 16 MHz CPU, and up to 1 KB of data EEPROM. The peripheral set described for this device includes an RTC, LCD support, timers, USART, I2C, SPI, ADC, DAC, and comparators. These integrated resources can reduce external component requirements in meter, sensor-node, industrial-control, and low-power consumer designs. The STM8L architecture provides a compact CISC-based platform with a broad selection of communications, timing, analog-conversion, and display-related peripherals. Because the verified product information identifies the part as an 8-bit ultra-low-power MCU, it is particularly appropriate for control tasks that require deterministic peripheral access and low standby power rather than the processing throughput of a 32-bit Cortex-M processor. Typical applications include low-power sensing nodes, compact industrial controllers, battery-powered meters, panel-control systems, and communication-enabled sensor modules. The integrated USART, I2C, and SPI interfaces support serial sensors and transceivers, while the ADC, DAC, and comparators enable local measurement, signal generation, and threshold detection without requiring separate analog devices. Designers should verify the exact pin multiplexing, clock configuration, low-power current, and peripheral operating limits in the manufacturer datasheet before layout freeze. A 28-pin UFQFPN also requires careful escape-routing and inspection because its fine-pitch pads are not suitable for conventional hand soldering without appropriate equipment and process control. This product page consolidates verified distributor pricing, package information, lifecycle-oriented selection guidance, and traceable comparison data with practical design notes. It is intended to help engineers identify the correct low-power MCU and evaluate genuinely same-package alternatives without implying that different architectures or package variants are drop-in replacements.

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STM8L151G4U6 - 16MHz 16KB Ultra-Low-Power MCU | ST
STM8L151G4U6

STM8L151G4U6 - 16MHz 16KB Ultra-Low-Power MCU | ST

The STMicroelectronics STM8L151G4U6 is an ultra-low-power 8-bit microcontroller with a 16 MHz core, 16 KB of Flash memory, 2 KB of RAM, and a 28-pin UFQFPN package measuring 4 x 4 mm. Its 1.8 V to 3.6 V operating supply range and low-power-oriented STM8L architecture suit compact embedded products that need efficient control, sensing, communication, and low standby consumption. A microcontroller is an integrated circuit that executes embedded control software and connects external peripherals through digital and analog I/O. In the device hierarchy, the STM8L151G4U6 is an 8-bit MCU, part of the STM8L ultra-low-power family, and part of the broader embedded processor category. Its integrated flash memory stores firmware, while RAM supports execution state and application data. The supplied product data identifies 16 KB of Flash, 2 KB of RAM, a 16 MHz maximum clock, 28 pins, and operation from 1.8 V to 3.6 V. Search results also associate the STM8L151x4/6 family with RTC, LCD, timers, USART, I2C, SPI, ADC, DAC, and comparators. Exact peripheral availability, GPIO mapping, electrical limits, and low-power current figures must be checked against the manufacturer documentation for the exact ordering code. At 16 MHz, the device provides substantially more processing headroom than lower-clock 8-bit designs while retaining the simplicity of the STM8 architecture. The compact 4 x 4 mm UFQFPN package supports space-constrained assemblies, but its fine pitch requires careful PCB layout, solder inspection, and adequate thermal management during reflow and production. Typical uses include low-power sensor nodes, compact industrial controllers, battery-powered instruments, meter and keypad interfaces, communication modules, and small consumer appliances. Engineers should select peripheral functions by device variant rather than assuming every member of the STM8L151 family has identical resources. Firmware migration also depends on the exact pinout, clock tree, memory map, startup file, and development-tool configuration. For PCB implementation, verify the exposed-pad connection, decoupling requirements, SWIM programming access, and all alternate-function assignments in the official package drawing. Validate low-power modes against the actual peripheral set because stopping timers, ADC conversion, serial interfaces, or LCD-related circuitry can change achievable standby current. This page consolidates verified distributor specifications, family-level capabilities, sourcing references, and strict drop-in replacement findings. It separates confirmed STM8L151G4U6 values from family-level information so engineers can make a defensible sourcing and design decision without assuming unverified electrical or lifecycle details.

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STM8L151G6U3 - 16MHz 32KB Low-Power MCU | ST
STM8L151G6U3

STM8L151G6U3 - 16MHz 32KB Low-Power MCU | ST

STMicroelectronics STM8L151G6U3 is an ultra-low-power 8-bit microcontroller with a 16 MHz maximum clock, 32 KB of Flash memory, and a 28-pin UFQFPN package measuring 4 mm by 4 mm. It operates from a 1.8 V to 3.6 V supply and targets compact embedded systems that require energy-conscious control, mixed-signal measurement, and communication peripherals without requiring a high-end 32-bit processor. An ultra-low-power microcontroller, or ULP MCU, is an energy-efficient semiconductor designed to remain responsive while consuming minimal power during active operation, standby, and wake-up transitions. The STM8L151 belongs to the STM8L EnergyLite family within STMicroelectronics' broader hierarchy of 8-bit microcontrollers, embedded processors, and semiconductor devices. Its low-power architecture makes it suitable for battery-operated sensors, portable instruments, industrial controls, and connected products that spend substantial time waiting for events. The STM8L151G6U3 provides 32 KB Flash, 2 KB of on-chip RAM, a 12-bit ADC, and a DAC according to the supplied manufacturer and distributor data. Its integrated peripheral set also includes an RTC, data EEPROM, timers, USART, I2C, SPI, comparators, and LCD support. These resources allow a compact design to sample analog inputs, maintain real-time information, communicate with sensors or external controllers, and drive a segment LCD without requiring several separate devices. The enhanced STM8 CPU core operates at up to 16 MHz, providing up to 16 MIPS according to the manufacturer family information. The device combines a 28-pin 4 mm by 4 mm UFQFPN package with analog and serial-interface functions, enabling high component density in space-constrained products. Its exact peripheral configuration, current consumption, timing limits, and absolute electrical limits should be confirmed against the current STMicroelectronics datasheet before a production design is released. Typical applications include low-energy environmental sensors, battery-powered measurement modules, compact industrial controllers, wearable accessories, smart-home endpoints, and small instrumentation products. For a sensor node, the ADC and timers can support periodic measurements while the RTC and low-power modes help control idle consumption. The USART, I2C, and SPI interfaces support external sensors, transceivers, memory, and host controllers, while LCD support is useful for local human-readable output. A critical design consideration is supply-voltage headroom. The MCU operates from 1.8 V to 3.6 V, so battery chemistry, regulator dropout, transient response, and brownout behavior must be evaluated together. Decoupling capacitors should be placed close to the supply pins, unused inputs should be configured appropriately, and low-power modes should be validated with the intended peripheral states rather than only with the core active. This page consolidates verified manufacturer and distributor information, package and interface guidance, pricing context, and practical application analysis. It also distinguishes documented functions from parameters that require confirmation from the manufacturer datasheet, supporting faster engineering comparison without treating unverified alternatives as drop-in replacements.

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STM8L151G6U6 - 8-bit Ultra-Low-Power MCU, 32KB Flash | STMicroelectronics
STM8L151G6U6

STM8L151G6U6 - 8-bit Ultra-Low-Power MCU, 32KB Flash | STMicroelectronics

The STM8L151G6U6 is an 8-bit ultra-low-power microcontroller from STMicroelectronics' STM8L EnergyLite family. It operates at a clock speed of 16 MHz and features 32 KB of Flash memory, 2 KB of SRAM, and 1 KB of data EEPROM. The device is housed in a compact 28-pin UFQFPN (4x4 mm) package, making it ideal for space-constrained applications. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit central processing unit (CPU), which processes data in 8-bit chunks. It integrates a processor core, memory (Flash, SRAM, EEPROM), and programmable peripherals (timers, communication interfaces, ADC, DAC) on a single integrated circuit. In the system hierarchy, an 8-bit MCU is a type of embedded controller, which falls under the broader category of microcontrollers, which are themselves a subset of integrated circuits used in embedded systems. The STM8L151G6U6 is specifically optimized for ultra-low-power operation, targeting battery-powered and energy-harvesting applications. Key features of the STM8L151G6U6 include a 16 MHz CPU clock, 32 KB Flash memory, 2 KB SRAM, and 1 KB data EEPROM. It also integrates a 12-bit ADC, a 12-bit DAC, two comparators, an RTC, LCD driver, and multiple communication interfaces (USART, I2C, SPI). The device supports a wide supply voltage range of 1.8V to 3.6V, and its ultra-low-power modes include a Halt mode with 0.35 µA current consumption, making it suitable for battery-powered devices. The STM8L151G6U6 is built on ST's low-power 8-bit core, which is designed for energy efficiency. It features a modular peripheral set that is shared across STM8 and STM32 families, simplifying code migration. The device includes a 4-channel DMA controller, which offloads data transfer tasks from the CPU, improving overall system performance. The ultra-low-power design extends battery life in portable applications. Typical applications include portable medical devices, sensor nodes, smart meters, and industrial control systems. The device's low power consumption and rich peripheral set make it ideal for applications requiring long battery life and reliable operation. For example, in a wireless sensor node, the STM8L151G6U6 can wake up periodically, read sensors, and transmit data via its USART or SPI interface, then return to Halt mode to conserve power. When designing with the STM8L151G6U6, ensure proper decoupling of the power supply pins with 100 nF capacitors placed close to the VDD and VSS pins. The device's low-power modes require careful configuration of the clock system and peripheral clocks to achieve the specified current consumption. Additionally, the UFQFPN-28 package has an exposed pad that should be connected to ground for optimal thermal performance.

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STM8L151G6U7 - 16MHz 32KB Ultra-Low-Power MCU | STMicroelectronics
STM8L151G6U7

STM8L151G6U7 - 16MHz 32KB Ultra-Low-Power MCU | STMicroelectronics

The STMicroelectronics STM8L151G6U7 is an ultra-low-power 8-bit CISC microcontroller with a 16 MHz CPU, 32 KB of Flash memory, integrated EEPROM, and a 28-pin UFQFPN 4x4 mm package. It belongs to the medium-density STM8L151x4/6 device family, combining low-power sensing and control capabilities with ADC, DMA, and embedded EEPROM resources. The target is the STM8L EnergyLite line, where the MCU provides dedicated low-power operating modes and fast wake-up behavior for compact, battery-operated systems. An ultra-low-power microcontroller is a semiconductor designed to minimize energy consumed during idle, sleep, and standby operation while still providing enough processing capability for control tasks. The STM8L family sits within the broader hierarchy of microcontroller, embedded processor, and semiconductor products. Its CISC architecture and integrated peripherals are intended to reduce external component count in low-speed sensing, metering, portable-instrumentation, and industrial-control designs. Key verified characteristics include a maximum CPU frequency of 16 MHz, 32 KB of Flash organized as 32K x 8, and a 28-pin UFQFPN package. The supplied distributor listing also identifies 2 KB of EEPROM, while the manufacturer describes the STM8L151G6 as a medium-density member of the STM8L ultra-low-power 8-bit family. Its integrated ADC and DMA support makes it useful where sampled analog signals must be transferred without excessive processor involvement. The STM8L151G6U7 architecture is tailored for low-power sensing and embedded control rather than high-throughput applications. Flash provides the main firmware area, integrated EEPROM supports nonvolatile data storage, and the ADC/DMA resources reduce the need for separate signal-acquisition components. The 4x4 mm UFQFPN footprint is suitable for space-constrained assemblies, although its fine pitch requires capable PCB assembly and careful land-pattern design. Typical uses include battery-powered environmental sensors, compact metering instruments, low-speed industrial controllers, portable measurement equipment, and connected sensing nodes. The MCU is appropriate when energy efficiency, integrated data acquisition, and a small footprint matter more than a high-pin-count interface or a large program-memory budget. Designers should also evaluate the available peripheral mix and PCB assembly capability for the 0.6 mm-class package before releasing a design to production. For implementation, follow the STMicroelectronics pin assignment and recommended decoupling guidance rather than relying on a generic QFN land pattern. Verify the exposed-pad connection, programming interface, oscillator arrangement, and ADC input routing against the official device documentation. Because the provided source snippets do not expose the complete pin table, electrical limits, or operating-temperature grades, those details require confirmation in the manufacturer datasheet before layout signoff. This page combines verified manufacturer and distributor facts with package-level selection guidance, comparison criteria, sourcing links, and engineering-oriented usage analysis. It distinguishes confirmed device characteristics from unavailable details instead of estimating missing electrical values, helping engineers make an initial selection while preserving a traceable path to the official STM8L151G6 documentation.

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STM8L151K2U6 - 16MHz 8-Bit Ultra-Low-Power MCU | STMicroelectronics
STM8L151K2U6

STM8L151K2U6 - 16MHz 8-Bit Ultra-Low-Power MCU | STMicroelectronics

The STMicroelectronics STM8L151K2U6 is an ultra-low-power 8-bit microcontroller with an STM8L EnergyLite CPU core, operating up to 16 MHz and delivering up to 16 MIPS of processing performance. It includes 4 KB of flash program memory and is supplied in a 32-pin UFQFPN package measuring 5 mm by 5 mm. The device is designed for compact, low-energy embedded systems where fast wake-up, low supply voltage operation, and a broad set of peripheral functions are important. An STM8L is an ultra-low-power microcontroller family within the wider microcontroller and embedded-processing hierarchy. It combines a simple 8-bit CISC architecture with power-management features intended for battery-operated and always-on equipment. The STM8L151x2 and STM8L151x3 devices share the low-density platform, while the K2 designation identifies this 32-pin, 4 KB Flash configuration. This combination allows designers to use the same MCU family for sensing, control, communication, and low-power monitoring functions. The STM8L151K2U6 operates from a 1.8 V to 3.6 V supply, as stated by the manufacturer product information, and provides a maximum clock speed of 16 MHz. Its 41 I/O ports support compact embedded layouts, while the 12-bit and 30-bit peripheral capabilities referenced in the product listing support common control and measurement tasks. The low-power architecture is useful for sensor nodes, industrial controls, portable instruments, and battery-powered accessories. The part is identified as an active, ultra-low-power MCU by STMicroelectronics and is offered in a 32-pin UFQFPN package. Its principal engineering trade-off is the modest 4 KB Flash capacity compared with larger STM8 devices. Firmware should therefore be structured for efficient storage, and application requirements involving graphical interfaces, large protocol stacks, or extensive data logging should be reviewed before design freeze. Typical applications include industrial sensor nodes, low-power wireless-control endpoints, portable measurement products, and embedded accessory controllers. Designers should preserve adequate decoupling close to the supply pins, confirm exposed-pad soldering requirements from the manufacturer datasheet, and validate low-power modes against the actual sensor and communication load. These measures help preserve the intended low-power behavior while maintaining signal integrity and reliable startup. This page organizes the manufacturer product information, distributor listing details, package characteristics, and application guidance for engineers evaluating STM8L151K2U6. It also highlights the memory-density limitation, supply-voltage range, low-power positioning, and practical PCB considerations that distinguish this MCU from larger STM8L variants.

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STM8L151K3U3 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics
STM8L151K3U3

STM8L151K3U3 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics

The STMicroelectronics STM8L151K3U3 is an ultra-low-power 8-bit microcontroller with a 16 MHz enhanced STM8 CPU core, up to 16 MIPS processing performance, and 8 KB of embedded Flash memory. The device is packaged in a 32-pin UFQFPN with exposed pad measuring 5 mm by 5 mm and operates from a 1.8 V to 3.6 V supply range. A microcontroller is a programmable semiconductor that combines a processor core, memory, and peripherals into one compact device. The STM8L belongs to the STM8L EnergyLite family, a low-power branch of STM8 microcontrollers used for embedded control, sensing, communications, and battery-powered products. Its role within an embedded system is to execute application firmware, acquire sensor data, control outputs, and coordinate low-energy operating modes. The STM8L151K3U3 provides 41 I/O ports and an 8 KB Flash program memory within its 32-pin package. Its enhanced STM8 core reaches 16 MIPS at 16 MHz, supporting responsive control tasks while the EnergyLite architecture emphasizes low-power operation. The 1.8 V to 3.6 V operating range accommodates 1.8 V and 3.3 V systems, while the UFQFPN-32 package supports compact surface-mount PCB layouts. The STM8L151x2 and STM8L151x3 devices target low-density designs where memory economy and low power are more important than a large general-purpose peripheral set. The STM8L151K3U3 is the UFQFPN-32 ordering configuration with 8 KB Flash. Firmware should be selected around the STM8L low-power operating model, and unused pins should be handled according to the manufacturer pin-description and connection guidance. Typical applications include low-power sensor nodes, compact industrial controls, building and access equipment, battery-operated instruments, connected sensing devices, and portable products. Its 41 I/O ports are useful for digital monitoring and control, while the 8-bit architecture and 16 MHz clock are appropriate for embedded tasks that do not require a high-performance 32-bit processor. A key design consideration is the exposed-pad thermal and electrical connection in the UFQFPN package. The exposed pad should be connected according to the manufacturer layout guidance, and the PCB should provide suitable copper area for heat spreading and low-impedance supply distribution. Firmware must also verify the device's low-power wake-up behavior against the response time required by the end application. This page combines manufacturer specifications, package and sourcing details, practical application guidance, and verified comparison information. It is intended to help engineers assess whether the STM8L151K3U3's memory size, I/O count, clock rate, voltage range, and low-power architecture match a specific embedded-control design.

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STM8L151K3U6 - 16MHz 8KB Low-Power MCU | STMicroelectronics
STM8L151K3U6

STM8L151K3U6 - 16MHz 8KB Low-Power MCU | STMicroelectronics

The STMicroelectronics STM8L151K3U6 is an ultra-low-power 8-bit STM8L EnergyLite microcontroller with up to 16 MIPS at 16 MHz, 8 KB of Flash memory, and a 32-pin UFQFPN package rated for a 1.8 V to 3.6 V supply range. Its combination of an 8-bit CISC core, compact footprint, and low-power operation suits embedded control, sensing, and connected battery-powered products. An ultra-low-power microcontroller is an embedded semiconductor designed to execute control tasks while minimizing energy consumption during active operation, sleep, and standby. The STM8L151K3 belongs to the STM8L EnergyLite hierarchy of 8-bit microcontrollers, combining real-time control with peripheral integration for compact industrial, consumer, and IoT equipment. The principal characteristics include a maximum clock frequency of 16 MHz, processing performance up to 16 MIPS, 8 KB of program Flash, and approximately 41 I/O ports. According to the STMicroelectronics product page, the enhanced STM8 core increases processing power while retaining the architecture's straightforward embedded-control focus. Operation from 1.8 V to 3.6 V also allows integration with low-energy sensor nodes and modern 3.3 V system rails. The device's 32-pin UFQFPN package provides a compact surface-mount solution with an exposed pad. Its small land pattern is useful in space-constrained products, although thermal design, soldering profile, and exposed-pad layout must follow the manufacturer's package guidance. The specified temperature options cover −40 °C to 85 °C or −40 °C to 125 °C, supporting both commercial and extended-temperature industrial designs. Typical applications include low-power sensor nodes, building and industrial control modules, compact instrumentation, battery-operated accessories, and IoT equipment that periodically wakes to acquire and process data. The 8-bit architecture is especially effective for control loops, user-interface handling, communications, and peripheral coordination where simple instruction execution and deterministic behavior are more important than high computational throughput. When laying out a circuit, treat the exposed thermal pad and its via pattern as part of the electrical and thermal design rather than as an optional copper feature. Confirm pin functions, decoupling requirements, programming connections, and operating limits against the manufacturer datasheet for the exact ordering code before releasing the PCB. This page combines the manufacturer product information with package, application, purchasing, and drop-in replacement guidance to help engineers evaluate the STM8L151K3U6 before schematic capture and PCB layout.

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STM8L151K4T3 - 16MHz 16KB Ultra-Low-Power 8-Bit MCU | ST
STM8L151K4T3

STM8L151K4T3 - 16MHz 16KB Ultra-Low-Power 8-Bit MCU | ST

The STMicroelectronics STM8L151K4T3 is an ultra-low-power 8-bit microcontroller operating at up to 16 MHz, with 16 KB of Flash memory and a 32-pin LQFP 7 x 7 mm package. It belongs to the medium-density STM8L ultra-low-power family, combining low-power operation with embedded control peripherals in a compact surface-mount package. A microcontroller is a programmable semiconductor that integrates a CPU, Flash program memory, data memory, timers, communication interfaces, and GPIO into one device. The STM8L family is designed for embedded systems where energy efficiency, deterministic peripheral access, and low standby current are more important than the processing power associated with 32-bit microcontrollers. The STM8L151K4T3 is therefore a microcontroller rather than a general-purpose processor. The device provides 16 KB of Flash memory, up to 16 MHz clocking, and 1 KB of data EEPROM according to the STM8L151 datasheet. Its peripheral set includes real-time clock, timer, LCD, and low-power functions. These characteristics support compact battery-operated products, industrial controllers, measurement equipment, and user-interface systems in which one MCU must combine control logic, display handling, and periodic sensing. The STM8 architecture provides an 8-bit execution model and a compact peripheral set intended for low-cost, low-power control. Ultra-low-power modes allow the MCU to spend substantial operating time in reduced-energy states between sensor readings or user interactions. Design decisions should account for the relationship between active-mode clocking, peripheral activity, and the selected regulator configuration rather than treating the 16 MHz maximum frequency as a continuous-power figure. Typical uses include low-energy sensor nodes, battery-powered meters, industrial control panels, programmable timers, LCD-driven instruments, and compact consumer appliances. In an LCD instrument, the integrated display-related resources can reduce the need for external display-control circuitry. In a battery-powered sensor, low-power operating modes can extend service intervals by reducing the amount of time the processor and peripherals remain active. When designing the PCB, provide the supply and decoupling connections specified in the STMicroelectronics application guidance, keep high-current and sensitive signal paths separated, and verify external component ratings against the selected I/O and supply conditions. Firmware should also use the low-power routines and peripheral configuration sequence described in the device reference documentation rather than assuming a generic 8-bit MCU startup model. This product page organizes the STM8L151K4T3 specifications, qualified same-package alternatives, application guidance, and design notes into a concise engineering reference. It supports initial device selection while directing detailed electrical-limit, pin, and firmware decisions to the manufacturer documentation.

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