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STM32L031K6T7 - 32MHz Cortex-M0+ 32KB MCU | STMicroelectronics
STM32L031K6T7

STM32L031K6T7 - 32MHz Cortex-M0+ 32KB MCU | STMicroelectronics

The STMicroelectronics STM32L031K6T7 is an ultra-low-power 32-bit microcontroller built around the Arm Cortex-M0+ core, operating at up to 32 MHz with 32 KB of Flash memory in a 32-LQFP 7 x 7 mm package. It is designed for compact embedded systems that require efficient control processing, low power consumption, and a broad operating-temperature range. An ultra-low-power microcontroller is a semiconductor device designed to minimize energy use during active operation, sleep, and standby modes. The STM32L031K6 belongs to STMicroelectronics' access-line STM32L0 family. Its position in the hierarchy is microcontroller IC, embedded processor, microcontroller, and semiconductor. This makes it suitable for compact battery-powered sensing, industrial control, communications, and consumer equipment where a general-purpose processor would be unnecessarily large or power-hungry. Key features include a 32 MHz Arm Cortex-M0+ processor, 32 KB of Flash program memory, and 8 KB of SRAM. The verified product information also identifies a 12-bit ADC and an operating-temperature range of -40°C to +105°C. These specifications support firmware storage, real-time control tasks, analog signal acquisition, and industrial thermal requirements while keeping the device within the STM32L0 access-line portfolio. The 32-bit Cortex-M0+ architecture provides a compact instruction set and efficient execution for embedded workloads. With 32 KB of Flash, the MCU can hold boot code, application firmware, configuration data, and protocol handlers without requiring an external memory interface. Its 8 KB of SRAM provides working memory for control loops, communication buffers, and peripheral data handling, although developers should size memory carefully in highly concurrent applications. Typical applications include low-power sensor nodes, industrial monitoring equipment, compact control panels, building automation endpoints, battery-operated instruments, and embedded communications controllers. The -40°C to +105°C range makes the device relevant to demanding industrial environments, while the 12-bit ADC supports analog inputs used in sensing and measurement designs. When designing around the STM32L031K6T7, verify every peripheral, alternate-function mapping, pin requirement, and software-driver dependency against the manufacturer documentation. Pay particular attention to startup configuration, clock limits, ADC acquisition requirements, and low-power mode transitions. PCB layout should preserve clean power distribution and appropriate decoupling around this 32-LQFP device. This product page consolidates verified manufacturer and distributor information, purchase context, technical comparison data, and practical design guidance. It distinguishes verified attributes from specifications requiring confirmation, helping engineers evaluate the STM32L031K6T7 without relying on generic microcontroller claims.

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STM32L031K6U6 - 32MHz Cortex-M0+ 32KB MCU | STMicroelectronics
STM32L031K6U6

STM32L031K6U6 - 32MHz Cortex-M0+ 32KB MCU | STMicroelectronics

STMicroelectronics STM32L031K6U6 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller operating at 32 MHz, with 32 KB flash memory, in a 32-pin UFQFPN 5x5 mm package. It belongs to the STM32L0 access-line family and targets compact, energy-conscious embedded systems. The verified distributor listing identifies the device as a 32-bit, 32 MHz MCU with 32 KB flash and a 32-UFQFPN package. A microcontroller is a semiconductor device that integrates a processor core, program memory, data memory, peripherals, and communication interfaces into one embedded-control platform. The STM32L031K6U6 combines an Arm Cortex-M0+ RISC core with low-power design goals, allowing firmware to control sensors, communications, timers, and analog or digital peripherals in compact products. The principal verified characteristics are a 32 MHz operating frequency, 32-bit architecture, 32 KB flash memory, and a compact 32-pin UFQFPN package. The Arm Cortex-M0+ core provides a straightforward instruction set for embedded applications, while the STM32L0 family positioning emphasizes low power consumption for battery-operated and resource-constrained equipment. The STM32L031K6 family is associated with the STMicroelectronics STM32L0 ultra-low-power portfolio. Typical embedded uses include low-power sensor nodes, compact control boards, portable instruments, simple communication equipment, and IoT devices where the combination of processing capability, memory, and package size is useful. Exact peripheral availability, electrical limits, memory-map details, and timing parameters should be confirmed in the manufacturer datasheet before final design release. Designers should preserve the package footprint, pin assignment, supported voltage range, decoupling requirements, clock configuration, and programming interface when creating a PCB. Because the supplied data does not include a full electrical table or complete pinout, unsupported values are marked as needed rather than inferred. This page combines verified distributor identification, manufacturer product information, practical application guidance, and sourcing context. This product summary distinguishes the STM32L031K6U6 from functionally related STM32 devices by emphasizing the verified combination of Cortex-M0+ architecture, 32 MHz operation, 32 KB flash, and 32-pin UFQFPN packaging. It is a useful starting point for embedded engineers evaluating low-power MCU designs and comparing package-compatible sourcing options.

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STM32L041F6P7 - 32MHz Cortex-M0+ 32KB Flash MCU with AES | STMicroelectronics
STM32L041F6P7

STM32L041F6P7 - 32MHz Cortex-M0+ 32KB Flash MCU with AES | STMicroelectronics

The STMicroelectronics STM32L041F6P7 is an ultra-low-power 32-bit Arm Cortex-M0+ microcontroller with 32 KB of Flash memory, 8 KB of SRAM, a 32 MHz CPU and a hardware AES accelerator, packaged in a 20-pin TSSOP (0.173 inch / 4.40 mm body width) surface-mount package. The STM32L041F6 access-line family targets cost-sensitive, battery-operated embedded designs where low active and standby current matter more than raw processing throughput. A microcontroller (MCU) is a self-contained embedded processing unit: a CPU core, program Flash, data SRAM, and a set of on-chip peripherals such as timers, serial interfaces, ADCs and GPIO, all integrated on a single die. The STM32L041F6 belongs to the STM32L0 access line, the entry tier of the STM32 family, and its Arm Cortex-M0+ core is the smallest and most energy-efficient member of the Cortex-M architecture, sitting at the bottom of the hierarchy MCU > microcontroller > embedded processor > semiconductor. Key features include the 32 MHz Cortex-M0+ core with its single-cycle multiplier and divider, 32 KB of Flash (32K x 8) alongside 8 KB of SRAM, an on-chip hardware AES accelerator for encrypted data links, and a small 20-TSSOP outline that keeps boards compact. The part is listed as Active in the lifecycle, is ROHS3 compliant, ships in a tray package, and carries a stated lead time of 17 weeks as of the October 2026 distributor data. Technologically, the STM32L041F6 is built around the ultra-low-power Arm Cortex-M0+ core with a 32 MHz maximum clock and a simple, deterministic peripheral set oriented around low-power operation. The 32 KB of Flash holds the application code and the 8 KB of SRAM serves as the working data space, which is adequate for small control loops, sensor fusion and low-rate communications. The AES block offloads encryption from the CPU, freeing the core for acquisition and protocol handling in secure metering and connected-sensor designs. Typical applications include low-cost IoT sensor nodes, smart water and gas meters, battery-powered wearables and trackers, industrial monitoring modules, compact keypads, and small motor or relay control boards where the 20-pin footprint and low standby current are decisive. When designing around this device, keep the decoupling network tight: place a 100 nF ceramic capacitor at each VDD pin and a 4.7 uF bulk capacitor close to the supply pins, and verify that your PCB footprint matches the 0.65 mm pitch 20-pin TSSOP. Because only 20 pins are available, budget carefully for analog inputs and serial lines, and confirm that the peripheral mix of your chosen variant matches your design. This page consolidates distributor pricing, lifecycle status and lead time as of 2026-10-28, a parameter-by-parameter comparison against pin-compatible STM32L0 alternatives, and practical design notes that are not found on the distributor product pages themselves.

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STM32L051C6T6 - 32MHz Cortex-M0+ 32KB MCU | STMicroelectronics
STM32L051C6T6

STM32L051C6T6 - 32MHz Cortex-M0+ 32KB MCU | STMicroelectronics

The STMicroelectronics STM32L051C6T6 is an ultra-low-power 32-bit Arm Cortex-M0+ microcontroller rated at 32 MHz, with 32 KB of Flash memory and 8 KB of RAM, housed in a 48-pin LQFP package. It belongs to STMicroelectronics’ STM32L0 access-line family and combines a compact general-purpose controller with energy-saving modes for embedded designs. A microcontroller is a programmable semiconductor system that integrates a CPU core, memory, I/O, and peripherals on one device. In the STM32 hierarchy, this MCU belongs to the STM32 family, the STM32L0 series, and the Arm Cortex-M0+ embedded-processing class. That architecture supports compact control firmware while separating larger tasks from low-power sensing or monitoring functions. The verified product information identifies a 32-bit Arm Cortex-M0+ core, 32 MHz operating frequency, 32 KB Flash, and an LQFP package measuring 7 mm by 7 mm. Distributor records also identify this orderable variant as a 48-pin tray-packaged device. The STM32L051x6/8 family description additionally lists embedded memory protection, enhanced I/O, and low-power capabilities, although individual peripheral values are not present in the supplied verification data. Ultra-low-power MCU architecture is particularly useful where average energy consumption matters more than maximum processing throughput. A device such as the STM32L051C6T6 can serve as the central controller for a battery-powered sensor node, industrial monitoring module, or connected actuator controller. Its 32 MHz Cortex-M0+ core provides a straightforward Arm software target, while 32 KB Flash constrains firmware and boot-code capacity compared with higher-memory STM32 devices. Potential uses include compact environmental sensors, low-power condition-monitoring nodes, appliance controls, meter interfaces, actuator controls, and embedded accessories that periodically wake a controller to acquire or process data. The 48-LQFP package also exposes more I/O than small dual in-line packages, but it requires a larger PCB footprint and careful assembly planning. Design planning should begin with the manufacturer’s pinout, memory map, and electrical limits. Do not infer unavailable GPIO, timer, analog, communication, voltage, current, or temperature specifications from family-level descriptions. Confirm that 32 KB of Flash is sufficient for the final bootloader and application, and review the exact peripheral mapping for each 48-pin board design. This product page combines verified manufacturer specifications, distributor availability, sourcing details, and application guidance. It also distinguishes exact drop-in alternatives from broader functional substitutes, helping engineers make PCB-level decisions without treating different Cortex-M devices as interchangeable.

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STM32L051C8T3 - 32MHz Cortex-M0+ 64KB Flash MCU | STMicroelectronics
STM32L051C8T3

STM32L051C8T3 - 32MHz Cortex-M0+ 64KB Flash MCU | STMicroelectronics

The STMicroelectronics STM32L051C8T3 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller in the STM32L0 access line, delivering 32 MHz CPU performance with 64 KB of Flash and 8 KB of SRAM in a 48-pin LQFP (7x7 mm) package. Operating from a 1.65 V to 3.6 V supply, it targets battery-powered and energy-harvesting designs where every microamp matters. An ultra-low-power microcontroller (MCU) is a class of embedded processor that combines a CPU core, on-chip memory, and a rich peripheral set with deep-sleep modes drawing only nanoamps to microwatts of quiescent current. The STM32L0 family sits inside the broader hierarchy of Cortex-M microcontrollers -> 32-bit MCUs -> microcontrollers -> microprocessors -> semiconductors, and ST positions the STM32L0 access line as the entry point for ultra-low-power embedded designs. Key features include 64 KB single-bank Flash, 8 KB SRAM, an 8-channel 12-bit ADC reaching 1 Msps, two ultra-low-power comparators, a real-time clock (RTC) with calendar, multiple timers (16-bit, 32-bit, SysTick), and seven communication interfaces including USART, SPI, and I2C. The integrated LDO + step-down DC-DC regulator combination on selected SKUs minimizes active and standby current while supporting flexible power modes. Architecturally, the Cortex-M0+ core pairs with ST's proprietary ultra-low-power peripherals (ULP) including low-power timers, brown-out reset, and multiple low-power run/sleep/shutdown modes. The dual-voltage operation and integrated DC-DC converter (on related STM32L0x2/x3 variants) deliver MCU run currents typically below 100 uA/MHz and standby currents in the sub-microamp range. Typical applications include IoT sensor nodes, wearable health monitors, smart meters, wireless remote controls, energy-harvesting devices, and battery-backed industrial alarms. Designers choose the STM32L051C8T3 specifically when they need deterministic Cortex-M0+ simplicity, generous Flash for an OTA-capable stack, and LQFP-48 hand-solderable packaging for prototyping or low-volume builds. When designing with this device, decouple both VDD and VDDA rails with 100 nF + 1 uF ceramics placed within 5 mm of the pins, and route the NRST line away from switching traces. The package's 7x7 mm LQFP-48 footprint is the industry-standard 0.5 mm pitch land pattern, simplifying PCB reuse across the STM32L0 family. This page synthesizes distributor pricing, drop-in alternatives within the STM32L0 family, and practical design notes not found in the manufacturer datasheet.

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STM32L051C8T6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
STM32L051C8T6

STM32L051C8T6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics

The STM32L051C8T6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M0+ core running at up to 32 MHz. It integrates 64 KB of Flash memory and 8 KB of SRAM, with a rich set of peripherals including a 12-bit ADC, comparators, timers, and multiple communication interfaces (I2C, SPI, USART). The device operates from a 1.8V to 3.6V supply and features several low-power modes, making it ideal for battery-powered and energy-harvesting applications. Data verified as of 2026-08-05. What is an ultra-low-power microcontroller? An ultra-low-power microcontroller is a type of embedded processor designed to minimize energy consumption while maintaining computational capability. It fits within the broader hierarchy: ARM Cortex-M0+ core -> 32-bit microcontroller -> embedded processor -> semiconductor. These devices are optimized for applications where battery life is critical, such as IoT sensors, wearables, and portable medical devices. The STM32L0 series specifically targets the low-power segment with multiple sleep modes and dynamic voltage scaling. Key features include a 12-bit ADC with hardware oversampling, a low-power UART, and a real-time clock (RTC) with calendar. The device supports a wide operating temperature range of -40°C to +85°C and is available in a 48-pin LQFP package. The STM32L051C8T6 also includes a unique device ID, CRC calculation unit, and a true random number generator (RNG) for security applications. Technically, the STM32L051C8T6 is built on ST's ultra-low-power technology, featuring a flexible clock tree with multiple internal/external oscillators. It supports a 1.8V to 3.6V power supply and has a typical current consumption of 3.4 µA in Stop mode with RTC, and 0.29 µA in Standby mode. The device also includes a brown-out reset (BOR) and power-on reset (POR) for reliable operation. Typical applications include IoT sensor nodes, smart home devices, portable medical monitors, and industrial sensor interfaces. Its low power consumption and rich analog peripherals make it suitable for battery-powered designs where long operational life is required. When designing with this MCU, pay attention to the power supply decoupling and the selection of the appropriate low-power mode for your application. Use the STM32CubeMX tool to configure the clock tree and peripherals efficiently. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the ST datasheet, providing a comprehensive resource for engineers evaluating the STM32L051C8T6.

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STM32L051K6T6 - 32MHz 32KB Cortex-M0+ MCU | STMicroelectronics
STM32L051K6T6

STM32L051K6T6 - 32MHz 32KB Cortex-M0+ MCU | STMicroelectronics

The STMicroelectronics STM32L051K6T6 is an ultra-low-power, 32-bit Arm Cortex-M0+ microcontroller operating at 32 MHz, with 32 KB (32K x 8) of Flash memory and 25 I/O pins in a 32-LQFP (7x7) package. It belongs to STMicroelectronics' access-line STM32L0 family and is designed for compact, energy-sensitive embedded-control products. A microcontroller is a semiconductor that integrates a processor core, program memory, data memory, peripherals, and input/output interfaces into one device. In the product hierarchy, the STM32L051K6T6 is an MCU, a general-purpose integrated circuit used to execute firmware and supervise connected hardware. Its Arm Cortex-M0+ core provides a compact, energy-efficient architecture for control-oriented rather than high-compute workloads. The verified device data identifies a 32-bit operating architecture, a maximum stated frequency of 32 MHz, 32 KB of Flash, and a 32-LQFP package. Distributor listings also identify a 12-bit ADC and 25 I/O pins. These resources make the device suitable for low-power sensing, actuator control, simple communications, and embedded products where a larger Cortex-M3 or Cortex-M4 processor would add unnecessary cost, board area, or energy consumption. The STM32L051K6T6's 32 MHz Cortex-M0+ core is positioned for energy-conscious control applications, while its 32 KB Flash capacity supports firmware, configuration data, and boot logic on one device. Its LQFP construction provides visible leads for inspection and repair, unlike fine-pitch land-grid-array packages. Exact RAM capacity, peripheral timing, and detailed electrical limits should be confirmed in the manufacturer datasheet for the final design. Typical uses include battery-powered environmental sensors, compact industrial monitoring nodes, access-control peripherals, low-power motor-control modules, and connected instrumentation. A designer can use the ADC for analog measurements and the GPIO structure for switches, indicators, sensors, and actuators, subject to the complete pin and peripheral assignments in the datasheet. The most important design consideration is to verify every alternate-function assignment and operating condition against the STM32L051K6T6 datasheet before PCB release. The 32-LQFP footprint should be checked for pin clearance, thermal exposure, and assembly capability, while firmware should use only the peripherals and interrupt assignments supported by the exact orderable device. This product record consolidates verified manufacturer and distributor information, current purchasing references, package details, application guidance, and same-family drop-in alternatives. It also identifies information that requires confirmation from the full datasheet rather than estimating unspecified RAM, timing, temperature, or pin-function values.

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STM32L051K8T6 - 32MHz Arm Cortex-M0+ MCU | STMicroelectronics
STM32L051K8T6

STM32L051K8T6 - 32MHz Arm Cortex-M0+ MCU | STMicroelectronics

The STMicroelectronics STM32L051K8T6 is an ultra-low-power 32-bit Arm Cortex-M0+ microcontroller operating at 32 MHz, with 64 KB of Flash memory and 8 KB of RAM in a 32-LQFP 7 x 7 mm package. It also provides 2 KB of data EEPROM, a 12-bit 10-channel ADC, and up to 27 GPIO for compact energy-sensitive embedded systems. An ultra-low-power microcontroller is an integrated computing device designed to perform control, measurement, and communications tasks while minimizing energy consumption between active processing periods. The STM32L051K8 belongs to the STM32L0 access-line hierarchy: microcontroller, embedded processor, Arm Cortex-M0+ MCU, and semiconductor. This positioning makes it suitable for small systems that need more processing capability than a simple logic device but value compactness, low power, and broad peripheral integration. Key features include 64 KB of Flash for firmware, 8 KB of SRAM for working data, and 2 KB of EEPROM for parameters that must retain their values without power. The device provides three general-purpose timers, one basic timer, one low-power timer, one SPI or I2S interface, one I2C interface, and two USART interfaces. Its 12-bit, 10-channel synchronized ADC supports embedded analog measurement, while as many as 27 GPIO allow direct connection of sensors, switches, displays, and actuators. The STM32L051K8T6 uses the high-performance 32 MHz Arm Cortex-M0+ core within the STM32L0 product family. Serial wire debug provides a compact programming and debugging connection, reducing the number of external pins and board area required during development. The part combines 32-bit processing, integrated analog conversion, timer-based control, and serial communications in one 32-LQFP package, reducing the component count of compact control boards. Typical applications include battery-powered sensor nodes, industrial condition-monitoring equipment, compact building-control modules, low-power data loggers, consumer accessories, and portable measurement instruments. Designers can use the ADC for analog inputs, timers for periodic sampling or PWM generation, and the I2C, SPI, and USART peripherals for sensors, memory, displays, or external communications modules. A key design consideration is power management. Engineers should use the device's low-power operating modes when the application spends substantial time idle, while confirming the required supply range, operating temperature, and peripheral clock configuration in the manufacturer documentation before releasing the PCB. This page also synthesizes verified distributor pricing, package details, alternatives, and practical implementation guidance for STM32L051K8T6 evaluation.

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STM32L052K6T6 - 32MHz USB Cortex-M0+ MCU | STMicroelectronics
STM32L052K6T6

STM32L052K6T6 - 32MHz USB Cortex-M0+ MCU | STMicroelectronics

The STMicroelectronics STM32L052K6T6 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller operating at up to 32 MHz, with 32 KB of Flash memory and USB 2.0 crystal-less connectivity in a 32-LQFP 7x7 mm package. It combines low-power embedded control with serial peripherals for connected industrial, IoT, sensor, and USB-powered products. A microcontroller is a semiconductor that integrates a processor core, programmable memory, digital I/O, and peripherals into one device. The STM32L0 family belongs to the ARM Cortex-M microcontroller hierarchy and targets embedded systems where compact size, efficient processing, and low standby or operating power are important. Its peripheral integration reduces the component count needed for communications, timing, analog measurement, and control. The verified product information identifies an ARM Cortex-M0+ core, 32 MHz operation, 32 KB Flash organized as 32K x 8, USB 2.0 crystal-less connectivity, and a 32-LQFP package. Distributor listings also identify I2C and SPI support, making the device relevant for sensor networks, USB-to-serial equipment, compact control boards, and low-power connected products. The exact SRAM, voltage range, temperature limits, and peripheral ratings were not supplied in the verified excerpts and therefore are not asserted here. The crystal-less USB feature is a practical differentiator for designs that need USB connectivity without relying on a dedicated external crystal for the specified USB implementation. Firmware must still satisfy the USB clocking, impedance, power, and enumeration requirements described by the manufacturer. The 32 MHz Cortex-M0+ core provides a responsive platform for control logic while retaining the STM32 family's low-power positioning. Typical applications include low-power IoT nodes, USB-connected sensors, industrial instrumentation, low-power control boards, compact data-acquisition products, and embedded automation modules. These uses benefit from the MCU's combination of USB, I2C, SPI, Flash, and a compact 32-LQFP footprint. The 7x7 mm package is easy to route on a reasonably dense PCB while preserving exposed assembly and inspection access. Designers should verify the complete pinout, alternate-function mapping, power requirements, decoupling recommendations, clocking scheme, and USB layout against the official STM32L052K6 datasheet before layout release. USB differential routing, ground-return continuity, input filtering, and exposed-pad thermal design are more important than simply matching the package outline. Firmware should also confirm peripheral mapping and low-power-mode timing rather than assuming that a lower-power alternative is automatically interchangeable. This page combines verified distributor and manufacturer listings with structured application, comparison, and design guidance. It is intended to help engineers identify the correct STM32L052K6T6 platform while separating confirmed data from parameters that still require direct datasheet confirmation.

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STM32L052K6U6 - 32MHz USB Cortex-M0+ MCU | STMicroelectronics
STM32L052K6U6

STM32L052K6U6 - 32MHz USB Cortex-M0+ MCU | STMicroelectronics

STMicroelectronics STM32L052K6U6 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller with a 32 MHz maximum clock, 32 KB flash memory, and USB 2.0 crystal-less connectivity in a 32-pin UFQFPN package measuring 5 mm by 5 mm. The device is designed for energy-sensitive embedded systems that require compact control, serial connectivity, timers, and low power operation. A microcontroller is a programmable integrated circuit containing a processor core, memory, peripherals, and input/output interfaces. The STM32L0 series belongs to the ARM Cortex-M0+ class of embedded processors, combining a compact instruction set with broad peripheral integration. This product hierarchy places the STM32L052K6U6 within microcontrollers, embedded processors, and the broader semiconductor category. Key verified features include a 32-bit ARM Cortex-M0+ core, operation up to 32 MHz, 32 KB flash, and USB 2.0 crystal-less connectivity. The 32-pin UFQFPN package supports compact surface-mount layouts where board area is constrained. Its low-power positioning makes it relevant for connected sensors, USB peripherals, industrial controls, and battery-operated equipment, provided that the selected operating modes and peripheral requirements are confirmed against the manufacturer documentation. The part is suitable when a design needs an Arm Cortex-M0+ control core, USB connectivity, and a compact package. Its 32 MHz clock specification provides a clear performance target for embedded firmware, while the 32 KB flash capacity should be checked carefully against application code size, bootloader requirements, and future updates. The crystal-less USB feature can simplify clock integration, but USB layout, power, firmware, and signal-integrity requirements still require careful implementation. Before design release, verify the complete pin assignment, electrical limits, memory map, USB support, operating-temperature grade, and package land pattern in the official STMicroelectronics documentation. The supplied verified data confirms the core, clock, flash, USB connectivity, package, and distributor identity, but it does not provide every electrical or pin-level parameter required for a complete hardware design. This product page combines verified manufacturer and distributor information, structured specifications, application guidance, and design considerations. It is intended to support component identification and sourcing while clearly identifying details that still require confirmation from the official STM32L052K6 datasheet.

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STM32L052R8T6 - 32MHz 64KB USB MCU | STMicroelectronics
STM32L052R8T6

STM32L052R8T6 - 32MHz 64KB USB MCU | STMicroelectronics

The STMicroelectronics STM32L052R8T6 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller with a 32 MHz maximum CPU frequency, 64 KB of Flash memory, and USB 2.0 crystal-less connectivity in a 64-LQFP 10 x 10 mm package. The device combines an energy-efficient embedded design with USB connectivity for compact, low-power electronic products. An ultra-low-power microcontroller is a semiconductor designed to complete control and connectivity tasks while minimizing energy consumption during active operation and low-power modes. In the product hierarchy, the STM32L052R8T6 is an MCU, an embedded processing IC, and a member of STMicroelectronics' STM32L0 family. Its compact package and USB interface make it suitable for devices that need firmware-driven control, data exchange, and low standby demand without requiring a higher-power application processor. Key verified features include an ARM Cortex-M0+ core, 32-bit processing, operation up to 32 MHz, and 64 KB of programmable Flash. The integrated connectivity supports USB 2.0 operation without an external crystal, while the specified 2.5 V and 3.3 V operating voltages support conventional embedded supply environments. The STM32L052x6/8 family is positioned by STMicroelectronics as an ultra-low-power platform for connected, compact products. The 64-LQFP package exposes substantially more I/O than smaller microcontroller packages, allowing designers to connect external sensors, displays, communication transceivers, and control interfaces without moving to a more complex device. At the same time, the Cortex-M0+ architecture keeps the MCU suitable for embedded control rather than demanding graphical or high-throughput workloads. Exact RAM, peripheral, timer, GPIO, and electrical limits are not present in the supplied excerpts and should be confirmed in the manufacturer datasheet. Typical applications include USB-connected sensors, compact industrial controls, medical-device peripherals, battery-operated accessories, USB-to-data acquisition systems, and low-power monitoring equipment. The crystal-less USB capability can simplify connector-based products when the final board design and firmware satisfy STMicroelectronics' USB clocking requirements. The main design consideration is package and firmware validation. Engineers should confirm the complete 64-pin assignment, USB impedance routing, decoupling, clocking, and peripheral configuration against the manufacturer documentation. This page combines verified distributor specifications, pricing context, same-family alternatives, and practical sourcing guidance that is not consolidated in a single manufacturer excerpt.

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STM32L053C8T6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
STM32L053C8T6

STM32L053C8T6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics

The STMicroelectronics STM32L053C8T6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at up to 32 MHz. It features 64 KB of Flash memory and 8 KB of SRAM, with a rich set of peripherals including USB 2.0, 12-bit ADC, DAC, comparators, and multiple communication interfaces. The device is housed in a 48-pin LQFP package, making it suitable for space-constrained applications. An ultra-low-power microcontroller (MCU) is a system-on-chip that integrates a processor core, memory, and peripherals, optimized for minimal energy consumption. The STM32L0 series is part of the STM32 family, which spans from entry-level Cortex-M0+ to high-performance Cortex-M7 cores. These MCUs are designed for battery-powered and energy-harvesting applications where power efficiency is critical, often featuring multiple low-power modes and dynamic voltage scaling. Key features include multiple low-power modes (Sleep, Low-power Run, Low-power Sleep, Stop with RTC, Standby with RTC), a 12-bit ADC with hardware oversampling, a 12-bit DAC, two ultra-low-power comparators, and a USB 2.0 crystal-less device. The device also integrates a real-time clock (RTC) with calendar and alarm functions, and a true EEPROM emulation. The operating voltage range is 1.8V to 3.6V, with a temperature range of -40°C to +85°C. The STM32L053C8T6 is built on ST's ultra-low-power technology, featuring a flexible power management that allows the core to run at 32 MHz while consuming only 84 µA/MHz in Run mode. The device supports a wide range of communication interfaces including I2C, SPI, USART, and LPUART, making it versatile for IoT and sensor applications. The integrated USB 2.0 interface supports both device and host modes, with a crystal-less design that reduces BOM cost. Typical applications include IoT sensor nodes, wearable devices, smart home controllers, industrial sensors, and portable medical devices. The ultra-low-power consumption and rich analog peripherals make it ideal for battery-powered systems that require long operational life. The device also supports firmware updates via USB or UART bootloader, simplifying field maintenance. When designing with this MCU, careful attention should be paid to the power supply decoupling and the selection of low-power modes to maximize battery life. The use of the internal 16 MHz HSI oscillator can reduce external component count, but for precise timing, an external crystal is recommended. The device's low-power modes require proper configuration of the RTC and wake-up sources to achieve optimal energy efficiency.

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STM32L053R8T6 - 32MHz Ultra-Low-Power Cortex-M0+ MCU | ST
STM32L053R8T6

STM32L053R8T6 - 32MHz Ultra-Low-Power Cortex-M0+ MCU | ST

The STMicroelectronics STM32L053R8T6 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller with a maximum CPU frequency of 32 MHz, 64 KB of Flash memory, 8 KB of SRAM, and a 64-pin LQFP-64 (10x10 mm) package. What is an ultra-low-power microcontroller? It is an embedded processor optimized to minimize energy consumption while still providing enough compute for sensing, control, and communication tasks. It sits in the product hierarchy: microcontroller -> ARM Cortex-M0+ -> ultra-low-power MCU -> battery-powered embedded system. These devices rely on low-leakage process technology, flexible clock gating, and sleep/stop/standby modes to cut current draw to microamp or nanoamp levels, enabling multi-year operation from a coin cell. Key features include a USB 2.0 full-speed crystal-less device controller, an LCD driver supporting up to 8x28 segments, a 12-bit ADC with hardware oversampling, a 12-bit DAC, two ultra-low-power comparators, and a real-time clock with calendar. The STM32L053R8T6 runs from a 1.8 V to 3.6 V supply (down to 1.65 V in power-down without BOR), operates from -40C to +125C, and provides I2C, SPI, and USART serial interfaces. Technically, this MCU is built in a 110 nm ultra-low-leakage process. It integrates an NVIC, a memory protection unit, a true random number generator, a CRC calculation unit, and a unique 96-bit device ID. Typical Run-mode consumption is 84 uA/MHz, while Standby with RTC is only 0.29 uA. The flexible clock tree accepts an internal 16 MHz RC, an external crystal, or a 32.768 kHz oscillator for low-power RTC timekeeping. Typical applications include portable medical devices, wireless IoT sensor nodes, smart utility meters, wearable devices, and LCD-equipped industrial products. The very low standby current and configurable wake-up events make this MCU ideal for systems that must spend most of their life asleep and wake periodically to sample, log, or transmit. When designing with this device, place a 100 nF decoupling capacitor near each VDD pin and a 1 uF bulk capacitor on the main supply. Configure the RTC, EXTI, or USART wake-up sources to keep average current in the microamp range while preserving responsiveness. This page synthesizes distributor availability, drop-in STM32L0 alternatives, comparison data, and practical low-power design notes that are not reprinted in the datasheet, helping engineers select and validate the part faster.

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STM32L071CBT6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
STM32L071CBT6

STM32L071CBT6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics

The STM32L071CBT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M0+ core. It operates at a maximum frequency of 32 MHz and features 128 KB of Flash memory and 20 KB of SRAM. The device is housed in a 48-pin LQFP package (7x7 mm) and is designed for a wide range of battery-powered and energy-efficient applications. An ultra-low-power microcontroller (MCU) is a type of integrated circuit that combines a processor core, memory, and peripherals on a single chip, optimized for minimal power consumption. The STM32L0 series is part of the broader STM32 family, which includes various ARM Cortex-M based MCUs. These devices are essential in embedded systems where energy efficiency is critical, such as IoT devices, wearables, and industrial sensors. The STM32L071CBT6 sits within the STM32L0 category, which is known for its low-power modes and high integration. Key features of the STM32L071CBT6 include multiple low-power modes (Sleep, Low-power run, Low-power sleep, Stop with RTC, Stop without RTC, Standby with RTC, Standby without RTC), a 12-bit ADC with hardware oversampling, a 12-bit DAC, two comparators, and a wide range of communication interfaces including I2C, SPI, USART, and LPUART. The device also integrates a USB 2.0 full-speed device controller, a real-time clock (RTC) with calendar, and a true random number generator (TRNG). The STM32L071CBT6 is built on STMicroelectronics' ultra-low-power technology, which enables a dynamic current consumption as low as 87 uA/MHz in Run mode and 0.4 uA in Standby mode with RTC. This makes it ideal for applications that require long battery life, such as smart meters, medical devices, and wireless sensor nodes. The device also supports a wide supply voltage range from 1.65V to 3.6V, allowing operation from a single coin cell battery. Typical applications include IoT edge nodes, portable medical devices, smart home sensors, and industrial monitoring systems. The rich set of analog peripherals and communication interfaces makes it a versatile choice for many embedded designs. When designing with the STM32L071CBT6, it is important to consider the power supply decoupling and the use of the low-power modes to maximize battery life. The device supports a flexible clocking scheme with an internal 16 MHz RC oscillator, an external crystal oscillator, and a PLL. Proper PCB layout with short, low-inductance traces for the crystal and decoupling capacitors is recommended for reliable operation.

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STM32L071CBT7 - 32MHz Cortex-M0+ 128KB MCU | STMicroelectronics
STM32L071CBT7

STM32L071CBT7 - 32MHz Cortex-M0+ 128KB MCU | STMicroelectronics

The STMicroelectronics STM32L071CBT7 is an ultra-low-power Arm Cortex-M0+ 32-bit microcontroller with a 32 MHz CPU, 128 KB of Flash memory, and a 48-LQFP 7 x 7 mm package. It belongs to STMicroelectronics' STM32L0 access-line family and is intended for compact, energy-conscious embedded products. The verified distributor data identifies the MCU as a 32-bit device with 128 KB organized as 128K x 8, while the manufacturer page describes the STM32L071xx family's 32 MHz Cortex-M0+ core. An ultra-low-power microcontroller is a semiconductor component optimized to complete embedded control tasks while minimizing energy consumption during active operation, standby, and wake-up transitions. The STM32L0 family sits within the broader hierarchy of microcontroller, embedded processor, embedded control IC, and power-conscious semiconductor. This positioning makes the STM32L071CBT7 suitable for products where battery life, compact size, deterministic control, and low system overhead matter more than maximum compute throughput. The verified data highlights three principal attributes: a 32 MHz Arm Cortex-M0+ processor, 128 KB of Flash memory, and a 48-LQFP 7 x 7 mm package. LCSC additionally identifies a 12-bit conversion feature and an operating temperature range of -40 C to +105 C. These details make the device a general-purpose embedded controller for low-power sensing, actuator control, portable equipment, and compact industrial modules. The exact RAM, peripheral, voltage, current, and package-pin details must be confirmed against the manufacturer datasheet before design release. The STM32L071CBT7 is intended for firmware that benefits from a familiar Arm Cortex-M ecosystem, efficient 32-bit instruction execution, and embedded Flash-resident program storage. Its 128 KB Flash capacity is larger than many minimal microcontrollers and can accommodate boot code, application logic, configuration tables, and protocol handlers. The 32 MHz clock provides useful processing headroom for sensor polling, digital filtering, user-interface state machines, and communication-stack tasks, although real-time performance remains dependent on peripherals and firmware configuration. Typical embedded uses include low-power environmental sensors, battery-operated portable instruments, compact motor or actuator controllers, connected sensing nodes, and industrial automation modules. In a sensor node, the MCU could acquire measurements, filter data, manage a low-power duty cycle, and store operating parameters. In an industrial module, it could coordinate inputs and outputs while supporting field-bus or serial communication. The package and exact peripheral complement should be selected against the mechanical drawing and pin definition. The primary design consideration is to validate every electrical and pin requirement from the official manufacturer datasheet before layout. Confirm the complete LQFP-48 pin map, supply limits, decoupling requirements, oscillator connections, I/O limits, and programming interface. For a new ultra-low-power design, calculate average current from the selected operating mode, peripheral load, wake-up rate, and measurement duty cycle rather than relying only on the maximum clock frequency. This page consolidates exact distributor and manufacturer facts, distinguishes verified data from missing parameters, and adds selection, sourcing, and design guidance. It also avoids presenting unverified pin mappings or cross-manufacturer drop-in claims as guaranteed replacements.

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STM32L071CZU6 - 32MHz Cortex-M0+ MCU | STMicroelectronics | Embedded
STM32L071CZU6

STM32L071CZU6 - 32MHz Cortex-M0+ MCU | STMicroelectronics | Embedded

The STMicroelectronics STM32L071CZU6 is an ultra-low-power, 32-bit Arm Cortex-M0+ microcontroller operating at 32 MHz, with 192 KB of Flash memory, 20 KB of SRAM, and 6 KB of data EEPROM in a 48-pin UFQFPN package measuring 7 mm by 7 mm. The device combines an Arm Cortex-M0+ RISC core, memory protection unit, enhanced I/O, and embedded communication peripherals for compact, low-energy embedded systems. A microcontroller is an integrated circuit that combines a processor core, program memory, data memory, and peripherals such as serial interfaces and timers. Within the semiconductor hierarchy, the STM32L071CZU6 belongs to the Arm Cortex-M microcontroller class and the STM32L0 access-line family. Its ultra-low-power positioning makes it appropriate for battery-operated sensors, compact industrial controls, connected accessories, and devices that spend substantial time in sleep or low-power operating modes. Three headline characteristics define the part. Its Arm Cortex-M0+ processor provides 32-bit arithmetic and operates up to 32 MHz, while 192 KB of Flash stores application firmware. The 20 KB SRAM supports working data and stack operations, and the 48-pin UFQFPN package offers a 7 mm by 7 mm surface-mount footprint. The manufacturer also documents 6 KB of data EEPROM and a memory protection unit. The embedded peripheral set supports I2C, SPI, and UART communication, allowing the MCU to connect sensors, transceivers, storage devices, and human-interface modules without requiring separate interface controllers. The 32-bit architecture and 32 MHz operating frequency provide useful processing headroom for protocol handling, state machines, data acquisition, and low-complexity control loops, while the STM32L0 platform emphasizes low-power operation and a broad set of enhanced I/O resources. Typical uses include industrial sensor nodes, building-automation endpoints, battery-powered monitors, compact data loggers, and connected embedded accessories. In an I2C sensor node, the MCU can manage acquisition and local processing while communicating with a host through UART or SPI. In a battery-powered monitor, its low-power architecture supports designs that spend most of their time idle and wake periodically to sample or transmit information. Board design should preserve access to all power, ground, reset, clock, boot, and peripheral pins while placing decoupling capacitors close to the supply pins. Firmware replacement must also account for the MCU's pin arrangement, boot configuration, and exposed-pad requirements. Because detailed operating-voltage, current, thermal, and exposed-pad data were not included in the supplied dataset, those values must be confirmed in the current STMicroelectronics datasheet before release. This product page combines verified manufacturer and distributor information, same-package alternatives, application guidance, and design cautions that are not presented together in the basic distributor listings. It is intended to accelerate component evaluation while preserving traceability to the official STM32L071xZ datasheet.

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STM32L071K8U3 - 32MHz, 64KB Ultra-Low-Power MCU | ST
STM32L071K8U3

STM32L071K8U3 - 32MHz, 64KB Ultra-Low-Power MCU | ST

The STMicroelectronics STM32L071K8U3 is an ultra-low-power, 32-bit Arm Cortex-M0+ microcontroller with a 32 MHz operating frequency, 64 KB of Flash memory, and a 32-pin UFQFPN package measuring 5 mm by 5 mm. It is designed for compact, battery-powered embedded systems that need efficient processing, low standby power, and integrated mixed-signal capabilities without requiring a large external memory subsystem. What is an ultra-low-power microcontroller? An ultra-low-power MCU is a semiconductor controller optimized to complete sensing, control, and communications tasks while consuming little active and sleep energy. The STM32L0 access line belongs to the STM32 family of 32-bit Arm Cortex-M microcontrollers and combines a low-power CPU with timers, communication peripherals, analog conversion, and GPIO in one package. This integration reduces board area, component count, and system power compared with a discrete control design. Verified source data identifies an Arm Cortex-M0+ core, 32 MHz maximum operating frequency, 64 KB organized as 64K x 8 Flash, and a 32-UFQFPN 5 x 5 mm package. The Mouser listing further identifies the device as an ultra-low-power Arm Cortex-M0+ MCU with 64 KB of Flash and a 32 MHz CPU. Additional RAM size, supply-voltage range, ADC characteristics, timer resources, GPIO count, and package tolerances are not present in the supplied source excerpts and therefore require confirmation from the manufacturer documentation. The STM32L0 architecture is suitable for energy-sensitive control systems because software can place the processor into low-power operating states between events. Low-power execution is particularly useful for portable sensors, where the MCU may wake to read an analog value, update an output, exchange data, and return to sleep. The 64 KB Flash capacity also accommodates embedded firmware, boot logic, configuration data, and application code in a compact 32-pin package. Typical uses for this microcontroller include connected environmental sensors, compact industrial monitors, battery-powered data loggers, appliance controllers, low-power wireless sensor nodes, and wearable accessories. Selection should prioritize verified peripheral compatibility, pin-level requirements, firmware portability, and power-mode support rather than core frequency alone. A firmware migration between STM32 families is simpler when peripheral behavior and software abstractions remain consistent, but a new design still requires board-level review. PCB implementation should preserve clean grounding and short analog paths around MCU power and sensing pins. Decoupling capacitors should be placed close to the associated supply pins, while exposed-pad or thermal requirements must follow the exact land pattern in the official package drawing. Firmware should use the correct startup vector table, clock initialization, and low-power mode transitions; excessive polling can negate the benefit of a sleep-capable MCU. This page combines verified distributor and manufacturer listings, commercial availability links, procurement context, and package-specific design guidance. It does not infer undocumented electrical values, and it distinguishes confirmed STM32L071K8U3 facts from parameters that still require verification in the official datasheet.

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STM32L071VZT6 - 32MHz Cortex-M0+ 192KB MCU | STMicroelectronics
STM32L071VZT6

STM32L071VZT6 - 32MHz Cortex-M0+ 192KB MCU | STMicroelectronics

The STMicroelectronics STM32L071VZT6 is an ultra-low-power 32-bit microcontroller with a 32 MHz Arm Cortex-M0+ core, 192 KB of Flash memory, and a 3 V supply rating in a 100-lead LQFP 14 x 14 mm package. It belongs to the STM32L071 access-line family and is designed for compact, low-power embedded systems requiring substantial Flash storage and a broad set of general-purpose peripherals. An ultra-low-power microcontroller is a semiconductor designed to minimize energy consumption during active operation, sleep, and standby states. The STM32L071 series sits within STMicroelectronics' STM32L0 product hierarchy: low-power microcontroller, 32-bit embedded MCU, Arm Cortex-M0+ processor, and general-purpose semiconductor. This positioning makes it suitable for battery-powered sensors, portable measurement equipment, industrial controllers, and connected products that must balance processing capability with energy efficiency. The three headline attributes of the STM32L071VZT6 are its 32 MHz operating frequency, 192 KB of Flash memory, and 100-lead LQFP construction. According to the STMicroelectronics STM32L071VZ product page and distributor listings, the device uses an Arm Cortex-M0+ core operating at 32 MHz and provides 192 KB of Flash organized as 192K x 8. The listed 100-LQFP package offers a large pin count for designs that need more external connectivity than smaller 48- or 64-lead packages provide. The STM32L0 family architecture supports efficient embedded control while retaining a conventional peripheral and GPIO-oriented design. STMicroelectronics identifies the STM32L071VZ as part of its ultra-low-power access line, indicating a balance between performance, memory, and energy-conscious operation. The Cortex-M0+ instruction set is appropriate for control loops, protocol handling, data acquisition, and supervisory tasks that do not require the compute performance of an Arm Cortex-M4 or M7 core. Typical uses include compact environmental monitors, low-power sensor nodes, industrial sensing modules, building-access controls, wearable-adjacent accessories, and battery-operated instruments. A network interface such as the LAN8720A-CP Ethernet PHY can be paired with the MCU when wired connectivity is required, while PCA9536DR-style digital expanders can add general-purpose I/O. Firmware and software configuration determine the final application, so all peripheral availability and operating limits must be confirmed in the manufacturer datasheet before design release. For PCB implementation, the 100-lead LQFP package requires a fine-pitch land pattern, careful decoupling near each supply pin, and adequate via-in-pad or fan-out routing beneath the device. Designers should confirm the exact pin multiplexing, debug-pad requirements, and decoupling recommendations against the STMicroelectronics datasheet rather than relying on a generic LQFP footprint library. This page consolidates the verified distributor specifications, manufacturer product information, family-level alternatives, and practical design considerations for STM32L071VZT6 evaluation. It also distinguishes verified parameters from unresolved details so procurement and engineering teams can assess supply, footprint, and firmware implications before committing to the design.

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STM32L072CBT6 - 32MHz Cortex-M0+ MCU 128KB Flash USB | STMicroelectronics
STM32L072CBT6

STM32L072CBT6 - 32MHz Cortex-M0+ MCU 128KB Flash USB | STMicroelectronics

The STMicroelectronics STM32L072CBT6 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller running at up to 32 MHz with 128 KB of Flash, 20 KB of SRAM, and a crystal-less USB 2.0 full-speed device interface, supplied in a 48-pin LQFP (7x7 mm) industrial-grade package. An MCU (microcontroller unit) integrates a CPU core, embedded memory, and peripherals on a single chip, acting as the compute element in embedded designs. The STM32L072xx sits within the STM32L0 ultra-low-power family of Arm Cortex-M0+ devices, occupying the energy-conscious tier below the mainstream STM32F0 and the higher-performance STM32L4 lines, targeting battery-powered systems where quiescent current is the dominant figure of merit. Differentiating features include the crystal-less USB 2.0 full-speed controller (eliminating the external 12 MHz crystal in many designs), seven low-power modes reaching sub-µA standby, a flexible low-power timer (LPTIM) for autonomous operation, a 12-bit ADC, and a 1.65 V to 3.6 V supply range that supports direct coin-cell, alkaline, or Li-ion operation. Multiple USART, SPI, and I2C interfaces aggregate sensors and radios. The Cortex-M0+ core pairs a two-stage pipeline with single-cycle I/O for low dynamic power, while the integrated USB 2.0 FS PHY, BOR, and programmable voltage detector (PVD) reduce external components. Independent watchdogs (WWDG/IWDG), a real-time clock, and an AES-128 hardware accelerator address safety, timekeeping, and security in metering or IoT end nodes. Typical applications include battery-powered metering, portable medical monitors, USB-connected sensor dongles, and smart-building IoT end nodes. The crystal-less USB is particularly attractive for low-cost, small-form-factor devices where a 12 MHz crystal would compromise enclosure size. Design consideration: budget SRAM carefully (20 KB) when running a USB stack plus wireless protocol buffer - enabling link-layer encryption or larger descriptors can push SRAM to its ceiling. This page synthesizes distributor pricing, pin-compatible STM32L0 alternatives, and practical design notes not found in the manufacturer datasheet.

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STM32L072CZT6 - 192KB Flash Cortex-M0+ MCU | STMicroelectronics
STM32L072CZT6

STM32L072CZT6 - 192KB Flash Cortex-M0+ MCU | STMicroelectronics

The STMicroelectronics STM32L072CZT6 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller with 192 KB of Flash, 20 KB of SRAM, and integrated USB 2.0 (crystal-less) in a 48-pin LQFP (7x7 mm) package. It runs at up to 32 MHz and operates from a 1.65 V to 3.6 V supply, making it suitable for battery-powered and energy-harvesting applications. The part belongs to the STM32L0 ultra-low-power family with multiple low-power modes (Stop, Standby, Shutdown) drawing sub-microamp quiescent currents. An ARM Cortex-M0+ microcontroller (MCU) is a 32-bit RISC processor core from ARM's Cortex-M family optimized for energy efficiency and deterministic interrupt response in deeply embedded systems. The Cortex-M0+ sits at the low-power end of the Cortex-M lineup (Cortex-M0+ -> Cortex-M0 -> Cortex-M3/M4/M33), and STM32L0 microcontrollers sit at the low-power end of the STM32 product hierarchy (STM32L0 -> STM32L1/L4/L5 -> STM32F/G/H families). L0-series MCUs target coin-cell, sensor, metering, and wearable designs where standby current and integrated analog peripherals matter more than raw compute throughput. Key features of the STM32L072CZT6 include 192 KB Flash with ECC, 20 KB SRAM, a 12-bit ADC with hardware oversampling, two ultra-low-power comparators, a real-time clock, multiple timers, and a USB 2.0 full-speed device interface that operates without an external crystal. The device supports AES-128 hardware encryption for secure connectivity in IoT endpoints. Integrated peripherals include I2C, SPI, USART, USB, and capacitive-touch sensing I/Os. The architecture combines a Cortex-M0+ core with ST's ultra-low-power design techniques, including multiple voltage domains, low-power RTC, and a wide set of GPIOs tolerant to 5 V. The 48-pin LQFP package balances compact board footprint with easy hand-soldering and breadboard prototyping, and supports the full STM32L072xx peripheral set on the available I/O count. Typical applications include battery-powered IoT sensors, USB-connected wearables, smart metering endpoints, wireless sensor nodes, medical patch devices, asset trackers, and human-machine interface panels. Designers value the part for USB connectivity in small form factors, deep-sleep currents, and an established STM32 toolchain (STM32CubeIDE, HAL/LL libraries). When designing with this part, plan decoupling around the 1.2 V core regulator pin and verify the low-power mode transitions in your application firmware before committing to battery-life calculations.

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STM32L072CZT6TR - 192KB Flash Cortex-M0+ USB MCU | STMicroelectronics
STM32L072CZT6TR

STM32L072CZT6TR - 192KB Flash Cortex-M0+ USB MCU | STMicroelectronics

The STMicroelectronics STM32L072CZT6TR is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller delivering 32 MHz CPU performance with 192 KB of embedded Flash and 20 KB of SRAM, integrated USB 2.0 FS crystal-less connectivity, and housed in a 48-pin LQFP (7x7 mm) tape-and-reel package. Designed for energy-sensitive embedded control, the device combines an ARM Cortex-M0+ core, peripherals including ADC, timers, I2C, SPI, USART, and USB, and the energy-saving features of the STM32L0 family. An ARM Cortex-M0+ microcontroller is a 32-bit reduced instruction set computing (RISC) processor core designed by ARM Holdings for embedded systems requiring predictable performance, low power consumption, and small silicon area. The Cortex-M0+ sits at the lowest power tier of the Cortex-M family and inherits the broader taxonomy of microcontroller -> embedded processor -> semiconductor device. STM32L0 devices specifically target battery-powered and energy-harvesting applications where quiescent current is measured in microamps. Key features include six ultra-low-power modes (Low-Power Run, Sleep, Low-Power Sleep, Stop with RTC, Standby with RTC, and Shutdown), a 12-bit ADC supporting up to 16 channels, multiple communication interfaces (USB 2.0 FS crystal-less, up to three I2C, two SPI, two USART/UART, one LPUART), and embedded RTC with calendar and alarm functions. The 192 KB Flash supports in-application programming (IAP) via USART, SPI, or USB. Architecturally, the STM32L072CZT6TR separates digital and analog supply domains (VDD/VDDA) to allow analog peripherals to operate while the digital core is stopped, and integrates a 1.2 V internal core regulator that powers the CPU only when required. The crystal-less USB 2.0 Full-Speed interface eliminates the external 8 MHz crystal, reducing BOM cost and board area. The device operates from 1.65 V to 3.6 V (down to 1.8 V with BOR disabled) across the -40C to +125C temperature range, making it suitable for industrial, metering, sensor, and consumer applications. Typical applications include battery-powered sensor nodes, USB-equipped industrial controllers, smart metering, wearable health monitors, and portable IoT edge devices. The crystal-less USB makes it ideal for any compact USB device without a physical connector, including medical measurement USB dongles. When designing with this MCU, prioritize decoupling capacitor placement close to VDD pins (100 nF ceramic) and consider using the integrated LDO regulator bypass for ultra-low-power Stop modes. Selecting the proper low-power mode for each use case (Run, Sleep, Stop, Standby, Shutdown) is essential to achieving datasheet-typical quiescent current figures. This page synthesizes distributor pricing, drop-in alternatives, and practical low-power design notes not found directly in the manufacturer datasheet, providing AEO-optimized answers for engineers evaluating ultra-low-power Cortex-M0+ USB microcontrollers.

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STM32L072KBU7 - 32MHz Cortex-M0+ 128KB Flash | ST
STM32L072KBU7

STM32L072KBU7 - 32MHz Cortex-M0+ 128KB Flash | ST

The STMicroelectronics STM32L072KBU7 is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller with a 32 MHz maximum CPU frequency, 128 KB of flash memory, and USB 2.0 crystal-less connectivity in a 32-pin UFQFPN package. It combines an energy-efficient embedded design with a compact 5 mm × 5 mm footprint for space-constrained embedded products. An ultra-low-power microcontroller is an integrated circuit optimized to minimize energy consumption during active operation, sleep, standby, and wake-up transitions. The STM32L0 Series belongs to the hierarchy microcontroller → 32-bit RISC microcontroller → ARM Cortex-M0+ microcontroller → ultra-low-power embedded MCU. This makes it suitable for battery-operated sensors, portable measurement equipment, connected accessories, and industrial devices that spend most of their operating time in a low-power state. The verified configuration includes a 32 MHz ARM Cortex-M0+ core, 128 KB of flash memory, USB 2.0 crystal-less operation, and operation from 2.5 V or 3.3 V supply levels. The microcontroller is identified in a 32-UFQFPN 5 mm × 5 mm package with an exposed pad. Its 128 KB program memory provides room for application firmware, USB device firmware, communication stacks, and field-upgrade routines without requiring external program memory. The STM32L072KBU7 is based on the STM32L072KB device family. STMicroelectronics describes the STM32L072xx line as combining ultra-low-power behavior with USB 2.0 crystal-less connectivity, allowing USB clock recovery without a discrete crystal when the board budget and clock-tolerance requirements permit. Because the supplied data does not enumerate RAM capacity, GPIO count, temperature limits, or individual peripheral ratings, those values are marked as data needed rather than inferred. Typical uses include USB-connected sensor nodes, compact data loggers, low-energy industrial monitors, firmware-update gateways, and handheld measurement instruments. The compact package also suits USB accessories and embedded systems where board area is constrained. Firmware can use the USB interface for enumeration and data transfer while retaining the Cortex-M0+ ecosystem of development tools, peripheral libraries, and application support. Designers should confirm the exact pin mapping, exposed-pad connection, decoupling requirements, and low-power current budgets against the STM32L072KB manufacturer documentation before layout release. The provided distributor summaries do not expose complete electrical or thermal tables, so no ADC accuracy, temperature range, or current-consumption value is asserted here. The exposed thermal pad should be evaluated as a potential ground and heat-spreading connection according to the manufacturer's land-pattern guidance. This page consolidates verified distributor specifications, same-family drop-in candidates, application guidance, and design considerations that are not presented together on a typical distributor listing. Because no verified cross-brand pin-compatible substitute was identified in the supplied cross-reference results, the alternatives are limited to documented STM32L0 family variants rather than padding the list with mechanically similar but electrically different devices.

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STM32L072RBT6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
STM32L072RBT6

STM32L072RBT6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics

The STM32L072RBT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M0+ core running at up to 32 MHz. It integrates 128 KB of Flash memory and 20 KB of SRAM, along with a rich set of analog and digital peripherals, making it ideal for battery-powered and energy-harvesting applications. An ultra-low-power microcontroller (MCU) is a system-on-chip that combines a processor core, memory, and peripherals while minimizing power consumption to extend battery life. The STM32L0 series is part of the STM32 family, which spans from entry-level Cortex-M0+ to high-performance Cortex-M7 devices. Within the power management hierarchy, these MCUs are designed for applications where energy efficiency is paramount, such as IoT sensors, wearables, and industrial monitoring. Key features include multiple low-power modes (Sleep, Low-power Run, Low-power Sleep, Stop with RTC, Standby with RTC, and Shutdown), a 12-bit ADC with hardware oversampling, a 12-bit DAC, two comparators, and an ultra-low-power timer. The device also integrates a USB 2.0 full-speed crystal-less interface, an LCD driver supporting up to 8x40 segments, and a true random number generator (TRNG). The operating voltage range is 1.8V to 3.6V, with a typical current consumption of 84 uA/MHz in Run mode and 0.29 uA in Standby mode with RTC. The STM32L072RBT6 is built on ST's ultra-low-power technology, featuring a flexible clocking scheme with an internal 16 MHz RC oscillator, an external 32.768 kHz crystal for RTC, and a PLL for higher frequencies. The device supports a wide range of communication interfaces including I2C, SPI, USART, and LPUART, enabling seamless connectivity in sensor networks. The integrated LCD driver and USB interface reduce external component count, simplifying board design. Typical applications include smart meters, medical devices, fitness trackers, wireless sensor nodes, and industrial process control. The ultra-low-power modes allow the MCU to operate for years on a single coin-cell battery, making it a preferred choice for IoT edge devices. When designing with this MCU, careful attention to the power supply decoupling and the selection of the appropriate low-power mode is essential to achieve the lowest possible energy consumption. The use of the internal RC oscillator can save cost, but for time-critical applications, an external crystal is recommended.

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STM32L072RZI6D - 192KB Flash 32MHz Cortex-M0+ MCU 64-UFBGA | STMicroelectronics
STM32L072RZI6D

STM32L072RZI6D - 192KB Flash 32MHz Cortex-M0+ MCU 64-UFBGA | STMicroelectronics

The STMicroelectronics STM32L072RZI6D is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller featuring 192KB of Flash, 20KB of SRAM, and a 32MHz maximum CPU clock speed, housed in a 64-ball UFBGA (5x5 mm) package. The device integrates a USB 2.0 Full-Speed interface (with on-chip PHY and crystal-less operation), an AES-128 encryption engine, and a true random number generator (TRNG), all within the STM32L0 ultra-low-power family. The wide operating voltage range of 1.65V to 3.6V and sub-uA standby currents make it a workhorse for battery-powered IoT nodes. An ARM Cortex-M0+ microcontroller is a 32-bit reduced instruction set core optimized for energy-sensitive embedded applications. It belongs to the microcontroller family hierarchy: microcontroller -> MCU -> 32-bit ARM MCU -> Cortex-M0+ -> ultra-low-power MCU -> STM32L0 family. The M0+ architecture trades peak performance for exceptionally low power and code density, making it ideal for applications where battery life matters more than GHz-class throughput. Key features of the STM32L072RZI6D include 192KB Flash, 20KB SRAM, 6KB EEPROM, a 12-bit ADC with up to 16 channels, multiple low-power modes down to deep-sleep with RTC retention, an integrated USB 2.0 Full-Speed peripheral (with on-chip PHY), and AES-128 hardware acceleration for secure communications. The device also includes a real-time clock (RTC), capacitive-touch sensing hardware (TSC), multiple timers, and a robust set of serial peripherals (USART, SPI, I2C). It is qualified for industrial temperature range of -40C to +85C and ships in a compact 5x5 mm 64-ball UFBGA package, reducing PCB footprint relative to equivalent LQFP64 parts. The STM32L072RZI6D leverages the Cortex-M0+ core with the ST proprietary ultra-low-power process technology. Designers benefit from the STM32CubeMX configuration utility, the STM32CubeL0 embedded software package with HAL/LL drivers, and broad toolchain support from IAR, Keil, and GCC-based IDEs. The device's integrated USB PHY eliminates the need for an external crystal on most USB designs, simplifying the BOM and reducing the PCB area required for USB connectivity. Typical applications include IoT sensor nodes, smart metering (gas, water and electricity), wireless M-Bus / wM-Bus endpoints, battery-powered asset trackers, medical wearables (continuous glucose monitors, pulse oximeters), and secure edge nodes where AES-128 hardware acceleration reduces firmware overhead. When designing with this device, plan decoupling capacitors as close as possible to the power pins and route the USB differential pair (D+/D-) with 90-ohm differential impedance and length matching. The integrated USB PHY requires careful PCB layout per ST application note AN4834 for signal-integrity compliance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers evaluate the STM32L072RZI6D for new designs and second-source decisions as of 2026-10-10.

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