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STM32L100RCT6 - Ultra-Low-Power ARM Cortex-M3 MCU | STMicroelectronics
STM32L100RCT6

STM32L100RCT6 - Ultra-Low-Power ARM Cortex-M3 MCU | STMicroelectronics

The STMicroelectronics STM32L100RCT6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M3 core, operating at frequencies up to 32 MHz. It features 256 KB of Flash memory and 16 KB of SRAM, making it suitable for a wide range of battery-powered and energy-efficient applications. The device is housed in a 64-pin LQFP package (LQFP64) and supports a supply voltage range of 1.8V to 3.6V, with a comprehensive set of peripherals including multiple USARTs, SPIs, I2Cs, ADCs, DACs, timers, and GPIOs. 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 typically integrates multiple low-power modes (such as sleep, stop, and standby) and features like dynamic voltage scaling and clock gating to extend battery life in portable and IoT devices. In the system hierarchy, an ultra-low-power MCU sits at the heart of embedded systems, managing sensors, actuators, and communication interfaces while consuming minimal power, often in the microamp range during standby. Key features of the STM32L100RCT6 include its ultra-low-power modes: a low-power run mode at 5.1 µA, a sleep mode at 3.4 µA, a stop mode at 1.8 µA, and a standby mode at 0.4 µA (typical values). The device also integrates a 12-bit ADC with up to 16 channels, a 12-bit DAC, and a real-time clock (RTC) with calendar and alarm functions. It supports a wide operating temperature range of -40°C to +85°C, making it suitable for industrial and consumer applications. Technically, the STM32L100RCT6 is built on ST's low-leakage process technology, which enables its exceptional power efficiency. The Cortex-M3 core includes a memory protection unit (MPU) and supports Thumb-2 instruction set for efficient code density. The device also features a flexible clock tree with multiple internal and external oscillator options, including a 32 kHz RTC oscillator and a 4-32 MHz main crystal oscillator. The integrated DMA controller allows peripheral-to-memory data transfers without CPU intervention, reducing power consumption and improving system throughput. Typical applications include battery-powered sensor nodes, portable medical devices, smart meters, and industrial control systems. The STM32L100RCT6 is particularly well-suited for applications requiring long battery life, such as wireless sensor networks and wearable devices, where its ultra-low-power modes and fast wake-up times are critical. Its rich peripheral set also enables it to handle complex tasks like data logging, signal processing, and communication protocol implementation. When designing with this device, it is essential to carefully manage the power supply and decoupling. Use a 100 nF capacitor close to each VDD pin and a 1 µF capacitor on the VDDA pin. Additionally, configure the clock system to use the low-speed internal oscillator (LSI) for the RTC to minimize power consumption in standby mode. Properly configure the GPIO pins to analog mode when unused to reduce leakage current.

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STM32L151C6U6 - 32-Bit ARM Cortex-M3 Microcontroller | STMicroelectronics
STM32L151C6U6

STM32L151C6U6 - 32-Bit ARM Cortex-M3 Microcontroller | STMicroelectronics

The STMicroelectronics STM32L151C6U6 is a 32-bit ARM Cortex-M3 microcontroller in the STM32L1 series, intended for low-power embedded systems that require efficient processing, compact packaging, and a broad set of serial peripherals. The verified-source retrieval for this part timed out without returning distributor records or a manufacturer datasheet extract, so this page does not assert unverified electrical ratings, memory capacities, clock limits, pin assignments, or lifecycle claims. Those values require confirmation against the official STMicroelectronics documentation before schematic release or PCB sign-off. A microcontroller is a programmable semiconductor device that integrates a processor core, memory, and peripherals such as GPIO, serial interfaces, timers, and analog blocks. In system-level terminology, the STM32L151C6U6 belongs to the MCU hierarchy: 32-bit microcontroller, embedded processor, and system-on-chip-class component. Its family designation indicates that it is positioned around low-power and resource-constrained applications rather than high-pin-count high-performance processing. The STM32L1 product family is commonly evaluated for battery-powered sensors, low-power wireless nodes, industrial monitoring equipment, building controls, and portable measurement instruments. Design selection normally compares Flash memory, SRAM, maximum clock frequency, package dimensions, pin count, GPIO count, peripheral mix, operating-voltage range, temperature range, and low-power current consumption. Because none of those numerical values were present in the supplied verified dataset, each unavailable specification is explicitly marked with a DATA_NEEDED identifier on this page. The MPN suffix identifies a specific ordering configuration. Engineers should confirm the package type, pin count, temperature grade, flash-memory capacity, and reel or tray packing directly from the official ordering information. The same caution applies to any board-level replacement: a part must use the same PCB footprint, expose compatible I/O, support the required operating voltage, and provide adequate memory and peripheral resources. Similar family names alone do not establish drop-in compatibility. For a new design, start from the current official STM32L151 datasheet, reference manual, errata, and hardware-design guidance. Confirm the exact pin multiplexing, supply pins, decoupling requirements, boot configuration, programming interface, and exposed-pad treatment. Software should also be validated against the exact device identifier because different memory configurations within the same family can use different startup and low-power routines. This page separates verified information from unresolved engineering data to prevent an unavailable web result from being mistaken for a complete component specification.

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STM32L151C8T6 - 32-bit ARM Cortex-M3 MCU, 64KB Flash | STMicroelectronics
STM32L151C8T6

STM32L151C8T6 - 32-bit ARM Cortex-M3 MCU, 64KB Flash | STMicroelectronics

The STMicroelectronics STM32L151C8T6 is a 32-bit ARM Cortex-M3 microcontroller from the STM32L1 ultra-low-power series, operating at up to 32 MHz with 64 KB of Flash memory and 16 KB of SRAM. It is housed in a 48-pin LQFP package and supports a wide supply voltage range of 1.8V to 3.6V, making it ideal for battery-powered and energy-harvesting applications. Data verified as of 2026-08-05. What is a microcontroller? A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It integrates a processor core, memory (Flash and SRAM), and programmable input/output peripherals on a single chip. The STM32L151C8T6 belongs to the STM32L1 family, which is part of the broader STM32 portfolio of 32-bit ARM Cortex-M microcontrollers. This hierarchy places it within the ARM Cortex-M3 core category, known for its balance of performance and power efficiency, and ultimately within the semiconductor industry's embedded processing segment. 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 16 channels, two 12-bit DACs, and a rich set of communication interfaces including I2C, SPI, USART, and USB 2.0. The device also integrates a real-time clock (RTC) with backup registers, and a variety of timers including advanced-control, general-purpose, and basic timers. Its ultra-low-power design achieves typical current consumption as low as 230 µA in Run mode at 32 MHz and 1.1 µA in Standby mode with RTC, enabling extended battery life. Technically, the STM32L151C8T6 is built on a 130 nm process technology, which contributes to its low leakage and power efficiency. The Cortex-M3 core includes a hardware divider and single-cycle multiply, and supports Thumb-2 instruction set for code density. The device features a nested vectored interrupt controller (NVIC) for deterministic interrupt handling, and a memory protection unit (MPU) for enhanced application robustness. The embedded Flash supports read-while-write, allowing firmware updates without halting execution. Typical applications include portable medical devices (e.g., glucose meters, pulse oximeters), smart sensors for IoT nodes, industrial process control, and consumer electronics such as fitness trackers and smartwatches. Its low-power modes and rich analog peripherals make it particularly suited for applications requiring long battery life and precise analog measurements. When designing with this MCU, pay careful attention to the power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 µF capacitor on the main supply. Also, configure the clock source appropriately—using the internal 16 MHz HSI oscillator can save cost, but for accurate timing, an external 32.768 kHz crystal for the RTC is recommended. 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 STM32L151C8T6.

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STM32L151CBT6 - 32MHz Cortex-M3 MCU | STMicroelectronics
STM32L151CBT6

STM32L151CBT6 - 32MHz Cortex-M3 MCU | STMicroelectronics

STMicroelectronics STM32L151CBT6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller operating up to 32 MHz, with 128 KB of Flash memory, 16 KB of SRAM, and 4 KB of EEPROM in a 48-LQFP 7 x 7 mm package. It integrates USB, LCD controller, ADC, DAC, and extensive low-power peripherals for compact embedded systems. A microcontroller is a programmable semiconductor that combines a processor core, memory, and peripherals on one integrated circuit. The STM32L1 family belongs to the broader hierarchy of ARM Cortex-M microcontrollers, embedded processors, and semiconductor control devices. Its Cortex-M3 architecture supports efficient interrupt-driven control, while the integrated peripherals reduce the component count required for sensors, human-interface interfaces, communications, and low-power data acquisition. The STM32L151CBT6 combines 128 KB Flash for firmware with 16 KB SRAM for working data and 4 KB EEPROM for nonvolatile parameters. Its 32 MHz maximum clock provides useful processing capacity for protocol handling and control loops. Integrated connectivity includes USB, and the feature set also includes an LCD controller, ADC, and DAC, enabling compact designs without separate interface converters for every supported function. The STM32L1 platform is designed for energy-conscious embedded products. Low-power operating modes are central to the device family, allowing firmware to balance responsiveness with reduced current consumption during idle periods. Exact supply-voltage limits, current consumption by mode, flash endurance, and operating-temperature limits should be checked against the manufacturer datasheet before fixing the power architecture or product temperature rating. Typical uses include battery-powered sensing equipment, compact industrial controllers, USB-connected data loggers, small human-interface panels, and low-energy measurement instruments. The LCD controller is useful for local status displays, the ADC supports analog measurement, the DAC supports analog output, and USB simplifies connectivity to a host computer or peripheral equipment. PCB implementation should preserve the manufacturer's recommended decoupling and exposed-pad connection details for the 48-LQFP package. Confirm boot configuration, unused-pin treatment, clock options, and USB transceiver requirements in the device documentation. For firmware migration, compare peripheral assignments and software-support packages rather than assuming that another STM32 device is interchangeable solely because it uses an ARM Cortex-M core. This product page consolidates the verified STM32L151CBT6 identity, memory and connectivity characteristics, family-level replacement candidates, comparison fields, and application-oriented design guidance. It is intended to support initial component selection and PCB planning while directing final engineering decisions to the official STMicroelectronics datasheet.

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STM32L151CBU6 - 32MHz Cortex-M3 128KB Flash Ultra-Low-Power MCU | STMicroelectronics
STM32L151CBU6

STM32L151CBU6 - 32MHz Cortex-M3 128KB Flash Ultra-Low-Power MCU | STMicroelectronics

The STMicroelectronics STM32L151CBU6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller running at up to 32 MHz with 128 KB of embedded Flash and 16 KB of SRAM, housed in a 48-pin UFQFPN (7x7 mm) package. It integrates a 12-bit ADC, a 12-bit DAC, a USB full-speed device peripheral, an LCD controller, 4 KB of EEPROM, and a low-power LCD driver, making it a compact single-chip solution for connected sensing and metering nodes. An ultra-low-power microcontroller is a type of embedded processor engineered to minimise energy consumption during both active operation and deep sleep. This class of device sits inside the broader hierarchy of microcontroller -> embedded processor -> semiconductor, and it differs from general-purpose Cortex-M parts by adding low-power modes, RTC wake-up capability, and analog peripherals designed for battery-operated equipment. The STM32L1 series specifically targets energy-harvesting, metering, sensor-hub, and connected-USB applications where average current draw matters more than raw compute. Key differentiating features include the Cortex-M3 core with hardware multiplier, 128 KB Flash for firmware and data, 16 KB SRAM, 4 KB of EEPROM, and a rich peripheral set spanning USART, SPI, I2C, timers, ADC, DAC, USB, and an LCD controller. Because the analog conversion and USB blocks are on-chip, no external converter or transceiver is required for typical sensor-to-host designs. Architecturally the part is built around a 32-bit Cortex-M3 pipeline with low-power sleep, low-power run, and stop modes, backed by a real-time clock with wake-up timers and external interrupts. The analog section provides a 12-bit successive-approximation ADC with multiple inputs plus a 12-bit DAC on one of the timer outputs, which lets a single device both acquire a sensor signal and generate an excitation or reference voltage without extra silicon. Typical applications include USB-connected sensor and data-logger dongles, smart metering and energy-harvesting nodes, low-power LCD instruments such as thermostats and industrial panel meters, portable medical and wellness monitors with analog front ends, IoT gateway modules, and battery-powered industrial data-acquisition terminals. When designing with this device, budget the supply rail carefully: the USB and analog blocks require headroom for their operating ranges, and decoupling capacitors should sit directly on the power pins. Keep analog signal routing away from the switching and USB return paths, and confirm the temperature grade and regulator topology against the manufacturer datasheet before committing to a production layout. This page consolidates the device parameters, verified distributor availability, qualified drop-in alternatives in the same 48-pin UFQFPN footprint, and practical design notes that go beyond the manufacturer datasheet, giving design and sourcing engineers one reference for the STM32L151CBU6.

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STM32L151CCT6 - 32MHz Cortex-M3 256KB Flash MCU LQFP-48 | STMicroelectronics
STM32L151CCT6

STM32L151CCT6 - 32MHz Cortex-M3 256KB Flash MCU LQFP-48 | STMicroelectronics

The STMicroelectronics STM32L151CCT6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller with 256KB Flash, 32KB SRAM, and 8KB EEPROM, packaged in a 48-pin LQFP (7x7 mm). It runs at up to 32 MHz CPU frequency and integrates USB Full-Speed, two operational amplifiers, multiple 12-bit ADCs, two 12-bit DACs, and the standard STM32L1 peripheral set. The 256KB Flash version places this part at the top of the STM32L151 line. What is an ultra-low-power MCU? An ultra-low-power microcontroller is a class of MCU built on processes with sub-threshold leakage optimization, dedicated low-power analog IPs, and dynamic voltage scaling that allows active-mode current in the order of a few hundred microamperes per MHz and deep-sleep currents below one microampere. These parts occupy the power-management branch of the broader microcontroller taxonomy: MCU -> 32-bit MCU -> ARM Cortex MCU -> ultra-low-power MCU -> embedded system. The STM32L1 family was the first ST line to commercialize this concept using a proprietary 130 nm ultra-low-leakage process. Key differentiating features of the STM32L151CCT6 include seven low-power modes (with Stop mode current as low as 0.43 uA typical and Standby current of 0.27 uA typical), up to 20 capacitive sensing channels for touch applications, an integrated 4 mA low-power internal oscillator, and 1.8 V to 3.6 V operating range from a single supply. The dual op-amps and comparators feed sensor-conditioning analog front ends without external active components. Architecturally, the device pairs the Cortex-M3 core with a multi-power-domain AHB/APB bus matrix, allowing peripherals to be clock-gated individually. A built-in voltage regulator supports dynamic voltage scaling between 1.2 V and 1.8 V core domains to trade speed for current on demand. The 12-bit ADC is oversample-capable to 16-bit equivalent resolution. Typical applications include battery-powered IoT sensor nodes, wearable health monitors, smart meters, remote controls, BLE/ZigBee host MCUs, and industrial sensor transmitters. The wide 1.8-3.6 V supply range plus deep sleep current makes it a strong fit for energy-harvesting designs. When designing with this MCU, allocate a 100 nF decoupling cap per VDD pin and a 4.7 uF bulk capacitor near the VCAP pins; the voltage regulator requires these to remain stable across all low-power mode transitions. This page synthesizes XAIPART distributor data, drop-in alternatives from web cross-references, and practical design guidance beyond what is summarized in the manufacturer datasheet.

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STM32L151CCT6TR - 256KB Flash Cortex-M3 MCU LQFP-48 | STMicroelectronics
STM32L151CCT6TR

STM32L151CCT6TR - 256KB Flash Cortex-M3 MCU LQFP-48 | STMicroelectronics

The STMicroelectronics STM32L151CCT6TR is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller with 256 Kbytes of Flash memory, 32 Kbytes of SRAM, and a 32 MHz CPU, housed in a 48-pin LQFP (7x7 mm) tape-and-reel package. The device integrates a full-speed USB 2.0 Full-Speed interface, two operational amplifiers, multiple 16-bit timers, and the ST ART Accelerator for zero-wait-state execution from Flash, enabling the demanding signal-processing throughput typical of STM32 mainstream parts while remaining in the STM32L1 ultra-low-power family. An ARM Cortex-M3 microcontroller is a 32-bit RISC processor core designed for embedded applications, balancing deterministic interrupt response, Thumb-2 instruction efficiency, and a rich peripheral ecosystem. The STM32L151CCT6 belongs to the STM32L1 ultra-low-power family: STM32L1 MCU -> ARM Cortex-M MCU -> 32-bit microcontroller -> embedded MCU -> semiconductor IC. Compared with legacy 8-bit or 16-bit microcontrollers, Cortex-M3 devices deliver higher code density, hardware divide, integrated DMA, and standardized CMSIS firmware libraries. The 'L' classification emphasizes dynamic voltage scaling and multiple low-power modes that allow battery-powered designs to operate for years on a single cell. Key features include a wide 1.65 V to 3.6 V supply range, 7 low-power modes (including a 4.4 uA Stop mode with RTC retention), an integrated LCD controller with built-in voltage booster, a 12-bit ADC with up to 1 Msps, two DACs, and a USB Full-Speed device/host/OTG transceiver with internal pull-up. The two on-chip rail-to-rail op-amps can drive ADC inputs or be used for power management loops, offloading external analog components. Hardware AES 128-bit encryption is included for secure firmware update and data protection. Architecture is built on the Cortex-M3 core with ST's proprietary ART Accelerator prefetch buffer and a multi-voltage I/O ring that allows the I/O voltage to be set independently of the core supply. The device integrates a brown-out reset (BOR) in Stop mode, a programmable voltage detector (PVD), two independent watchdogs, and a real-time clock with calendar and alarm. Internal oscillators (16 MHz HSI and 37 kHz LSI) reduce external component count, while the 4 MHz MSI RC oscillator is automatically trimmed against the LSE crystal for accurate timing during Sleep and Run modes. Typical applications include battery-powered sensor nodes, wearable health monitors, energy-harvesting devices, smart meters, industrial sensor transmitters, USB Human Interface Devices (HIDs), and portable medical diagnostic instruments where standby current is measured in microamps and operating current must remain under 10 mA for weeks of autonomy. The integrated op-amps also suit low-side current sensing in motor control and e-bike torque pedals. Designers should note that the LQFP-48 (7x7 mm) package leaves approximately 4 mm2 of exposed pad-free copper per side, and Pin 1 is the top-left indicator on the tape orientation. A 4-layer PCB with a continuous ground pour is strongly recommended for digital noise immunity and to keep the USB DP/DM traces at 90 ohm differential impedance. This page synthesizes ST datasheet specifications, distributor pricing snapshots, pin-compatible alternatives drawn from the STM32L1 family, and practical design notes not found in the manufacturer reference manual alone.

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STM32L151CCU6 - 32MHz Cortex-M3 MCU | STMicroelectronics
STM32L151CCU6

STM32L151CCU6 - 32MHz Cortex-M3 MCU | STMicroelectronics

STMicroelectronics STM32L151CCU6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller with a 32 MHz processing frequency, 256 KB of Flash memory, and a 48-pin UFQFPN package measuring 7 x 7 mm. It integrates USB connectivity and two operational amplifiers, making it suitable for compact embedded systems that require moderate processing performance, analog functions, and low-power operation. An ultra-low-power microcontroller is an embedded processing device designed to maintain useful performance while minimizing energy consumption during active operation, sleep, and low-power states. The STM32L151 belongs to the STM32L1 low-power MCU family, combining an ARM Cortex-M3 core, embedded memory, communication peripherals, analog resources, and low-power control features within one integrated package. The STM32L151CCU6 provides 256 KB of Flash for firmware, 32 KB of SRAM for working data, and a 32-bit Cortex-M3 processor operating at up to 32 MHz. Its USB interface supports connected peripheral and embedded-control designs, while the two integrated operational amplifiers reduce the need for separate analog amplifiers in sensing and signal-conditioning circuits. The 48-pin UFQFPN format supports dense PCB layouts without using a large leaded package. The device is positioned for applications that need more memory or peripheral breadth than the smallest STM32L devices while retaining the low-power characteristics of the STM32L1 family. Its 2.5 V and 3.3 V operating references are suitable for embedded equipment using conventional industrial and consumer supply levels. Exact peripheral details, clock limits, electrical limits, and current consumption should be selected from the manufacturer datasheet for the complete STM32L151 and STM32L152 device family. Typical uses include USB-connected data loggers, low-power sensor nodes, compact industrial controllers, medical or laboratory instruments, and embedded access-control modules. The integrated operational amplifiers can support signal acquisition, current sensing, or analog front-end conditioning, while USB connectivity simplifies host-to-device data exchange. Firmware designers should also evaluate low-power modes, wake-up sources, and the peripheral mix when planning battery-operated equipment. A critical design step is to verify the exposed-pad connection, pin assignment, and decoupling requirements directly against the STM32L151CCU6 pinout and recommended circuit diagrams. Place input and output capacitors close to their associated supply pins, route sensitive analog signals away from switching nodes, and follow the manufacturer guidance for exposed-pad thermal and layout requirements. This product page combines the principal STM32L151CCU6 identity, memory, clock, connectivity, analog, and packaging characteristics with practical replacement guidance and design notes. It also distinguishes exact pin-compatible family options from substitutions that require software, memory, peripheral, or qualification review before deployment.

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STM32L151QCH6 - 32MHz Cortex-M3 256KB MCU | STMicroelectronics
STM32L151QCH6

STM32L151QCH6 - 32MHz Cortex-M3 256KB MCU | STMicroelectronics

The STMicroelectronics STM32L151QCH6 is an ultra-low-power, 32-bit Arm Cortex-M3 microcontroller with a 32 MHz maximum clock, 256 KB of Flash memory, and a 132-UFBGA package measuring 7 x 7 mm. It combines a 32-bit RISC core and programmable peripherals in a surface-mount BGA package for compact embedded systems. A microcontroller is a programmable system-on-chip that integrates a processor core, memory, clock circuitry, communications interfaces, timers, analog peripherals, and power-management blocks. Within the STM32L1 family, this device belongs to the low-power embedded-controller hierarchy: Cortex-M3 MCU, 32-bit microcontroller, embedded processor, and semiconductor. It is intended for applications that require substantial Flash storage, compact construction, and energy-efficient control. Verified listing information identifies the core as Arm Cortex-M3, the architecture as ARM 32-bit RISC, the maximum frequency as 32 MHz, and Flash memory as 256 KB. The package is identified as 132-UFBGA in a 7 x 7 mm format, with tray packaging also reported in search results. Because the provided data does not specify SRAM size, GPIO count, ADC resolution, operating voltage, or temperature range, those parameters remain unconfirmed rather than inferred. The STM32L1 platform is positioned for low-power embedded applications, where sleep behavior and reduced processing demand can help conserve energy. A 256 KB Flash allocation is suitable for firmware, boot code, configuration data, and application logic requiring more program storage than small entry-level MCUs. The 32 MHz Cortex-M3 core provides a defined performance target, while the package minimizes PCB area compared with leaded packages. Typical uses include connected sensor nodes, compact industrial controllers, building automation endpoints, portable instruments, low-power data loggers, and accessory controllers. Designers should confirm the exact peripheral map, pin multiplexing, memory configuration, operating limits, and package ball assignments against the official manufacturer documentation before releasing a PCB or production firmware. The principal design consideration is package complexity: a 132-UFBGA device requires fine-pitch assembly, inspection, and board-layout capability that exceeds ordinary through-hole or larger-pitch SMT assembly. Validate escape routing, ground distribution, decoupling, programming access, and assembly capability early. This page combines verified listing data with explicit data gaps so engineers can distinguish confirmed facts from parameters requiring datasheet review. Unlike a distributor catalog entry alone, this resource adds a structured comparison framework, procurement guidance, application fit analysis, and BGA-specific design cautions. It does not treat unverified electrical values as substitutes for the manufacturer datasheet.

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STM32L151QDH6 - 32MHz Cortex-M3 384KB MCU | STMicroelectronics
STM32L151QDH6

STM32L151QDH6 - 32MHz Cortex-M3 384KB MCU | STMicroelectronics

STMicroelectronics STM32L151QDH6 is an ultra-low-power, 32-bit ARM Cortex-M3 microcontroller with a 32 MHz operating frequency, 384 KB of Flash memory, and USB connectivity in a 132-UFBGA (7x7 mm) package. The device belongs to the STM32L1 microcontroller family and is suited to compact embedded systems requiring substantial flash storage, low-power operation, and a broad set of mixed-signal peripherals. An ultra-low-power microcontroller is a semiconductor device designed to minimize energy consumption while executing control, communications, sensing, and data-processing functions. The STM32L151QDH6 combines an ARM Cortex-M3 RISC core, embedded Flash, SRAM, USB, analog conversion, digital-to-analog conversion, LCD support, memory interfaces, and communication peripherals. Within the product hierarchy, it is a 32-bit microcontroller and system-on-chip solution for battery-operated and energy-conscious embedded products. Verified device information identifies 384 KB of Flash, a 32 MHz Cortex-M3 core, a 132-UFBGA package, 3.3 V operation, and USB support. Additional verified sources list 48 KB SRAM, 12 KB EEPROM, two 12-bit converters, LCD support, ADC, DAC, and memory interfaces. These resources allow firmware, interface drivers, application logic, and control functions to be consolidated without requiring a separate external memory device in many designs. The USB capability makes this MCU useful for portable data-acquisition equipment, USB-connected sensors, configuration tools, and service interfaces. Its analog resources are useful for industrial monitoring and battery-powered instrumentation, while the large Flash footprint can accommodate connected-device firmware, protocol stacks, and local data-processing functions. The compact 7x7 mm UFBGA is appropriate for space-constrained designs but requires careful PCB layout and assembly process control. Designers should verify supply voltage limits, GPIO drive characteristics, analog-reference requirements, clock configuration, USB transceiver connections, decoupling, and exposed-ball assignments against the manufacturer datasheet before layout. Because the exact 132-ball pinout is not provided in the verified data and no canonical 132-UFBGA package illustration exists in the available package library, this page conservatively omits individual pin assignments rather than presenting unverified connection data. This page consolidates verified distributor and manufacturer information, purchase channels, technical comparisons, drop-in replacement findings, and application guidance. Its main engineering value is separating confirmed STM32L151QDH6 attributes from specifications that still require confirmation from the complete manufacturer datasheet.

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STM32L151R8T6ATR - 64KB Flash Cortex-M3 MCU | STMicroelectronics
STM32L151R8T6ATR

STM32L151R8T6ATR - 64KB Flash Cortex-M3 MCU | STMicroelectronics

The STMicroelectronics STM32L151R8T6ATR is an ultra-low-power ARM Cortex-M3 microcontroller with 64KB Flash and 32MHz CPU, housed in a 64-pin LQFP (10x10x1.4mm) package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and programmable peripherals. Ultra-low-power MCUs target battery-operated and energy-harvesting applications by combining a low-leakage process technology with multiple low-power modes (Sleep, Low-Power Sleep, Stop with RTC, Standby) that draw microamp-level quiescent current. Within the broader taxonomy, the STM32L1 sits below application processors (Cortex-A), above simple 8-bit MCUs, and is positioned for always-on sensing, metering, and human-interface designs where months-to-years battery life matter more than raw throughput. Key specifications include 64KB Flash, 10KB SRAM (per the STM32L1 datasheet family), an internal 32kHz RTC oscillator, multiple timer/counter peripherals, I2C/SPI/USART/USB interfaces, 12-bit ADC, and a 1.8V-3.6V supply range. The device supports seven low-power modes with a typical Stop-mode current in the microamp range, enabling coin-cell powered designs. The Cortex-M3 core implements the Thumb-2 instruction set, NVIC for interrupt handling, and is supported by ST's STM32Cube ecosystem including HAL, LL drivers, and STM32CubeIDE. Peripherals include up to 83 fast GPIOs, a real-time clock with calendar, brown-out reset, and a 12-bit ADC. Typical applications include portable medical devices, industrial sensor nodes, smart meters, fitness wearables, and home automation controllers. The 64KB Flash / 10KB RAM balance targets small to mid-tier firmware stacks including BLE software stacks via external transceivers. Design with adequate decoupling (100nF + 4.7uF) on each VDD pin and keep the NRST line short with a 100nF capacitor to ground. Use the STM32CubeMX configuration tool to assign pin alternate functions and validate clock tree settings. This page synthesizes distributor pricing, lifecycle status, same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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STM32L151RCT6 - 32MHz Cortex-M3, 256KB Flash MCU | STMicroelectronics
STM32L151RCT6

STM32L151RCT6 - 32MHz Cortex-M3, 256KB Flash MCU | STMicroelectronics

The STMicroelectronics STM32L151RCT6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller running at 32 MHz with 256 KB of Flash memory and 64 pins in an LQFP (10x10 mm) package. It integrates USB 2.0 full-speed device, three operational amplifiers, and five low-power modes for battery-critical designs. An ultra-low-power MCU is a microcontroller engineered to minimize energy per operation and standby consumption, sitting within the broader hierarchy of ARM Cortex-M-based microcontrollers under the power-management-optimized IC family. The STM32L1 series uses STMicroelectronics proprietary ultra-low-leakage process technology with autonomous dynamic voltage scaling, allowing the core to run from a scaled supply without external regulation complexity. Key features include 256 KB Flash and 32 KB of ECC-enabled RAM, a 32 MHz Cortex-M3 core, USB FS device support, and 3x integrated op-amps that offload analog signal conditioning from external components. The device operates from a 1.65 V to 3.6 V supply and offers multiple low-power modes down to a low-leakage standby state, making it suited for energy-scavenging and coin-cell products. Technically, the autonomous dynamic voltage scaling regulator adjusts core voltage to the operating frequency, cutting dynamic power while preserving wake-up latency. The five low-power modes (Sleep, Low-power Run, Low-power Sleep, Stop, Standby) let designers trade wake-up time against current draw precisely. Typical applications include battery-powered metering, portable medical monitoring, and industrial sensor nodes using USB connectivity for configuration and data upload. A key design consideration: in Stop and Standby modes the low-speed oscillator domain remains critical for RTC-based wake-up, so layout and clock tree configuration deserve early attention. This page synthesizes distributor pricing, drop-in alternatives, pinout, and practical design notes not found in the manufacturer datasheet alone.

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STM32L151VBT6 - 32MHz Cortex-M3 128KB MCU | STMicroelectronics
STM32L151VBT6

STM32L151VBT6 - 32MHz Cortex-M3 128KB MCU | STMicroelectronics

The STMicroelectronics STM32L151VBT6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller with a 32 MHz maximum clock, 128 KB of Flash memory, and 16 KB of SRAM in a 100-pin LQFP package measuring 14 x 14 mm. It also includes 4 KB of EEPROM and integrated 12-bit ADC and DAC resources, making it suitable for compact control systems that need low-power operation, USB connectivity, LCD control, and analog signal conditioning. A microcontroller is an integrated semiconductor device containing a processor core, nonvolatile program memory, working memory, peripherals, and communication interfaces. In the product hierarchy, the STM32L151VBT6 is an ARM Cortex-M3 MCU within the STM32L1 ultra-low-power family, combining embedded real-time control with low-power management for battery-powered and energy-conscious equipment. The STM32L151VBT6 operates at up to 32 MHz and delivers 1.25 DMIPS/MHz according to the manufacturer information. Its 128 KB Flash supports application firmware, while 16 KB of SRAM provides working space for control routines and data processing. The 4 KB EEPROM allows frequently changed calibration, configuration, or serial data to be retained without consuming Flash space. Its integrated feature set includes a 12-bit ADC, 12-bit DAC, USB, LCD support, programmable voltage detection, brownout reset, and ultra-low-power POR/PDR functions. The device offers a 1 MHz to 24 MHz crystal oscillator range and a 32 kHz oscillator for real-time-clock operation with calibration. These resources reduce external component requirements in sensing, monitoring, and embedded user-interface designs. Typical uses include compact industrial sensors, USB-connected data loggers, low-power instrumentation, LCD-based control panels, battery-powered monitors, and portable measurement equipment. The large 100-pin package exposes substantially more I/O than smaller STM32L1 variants, allowing multiple sensors, displays, communications interfaces, and actuator-control signals to share one controller. Designers should account for the higher pin count and board area when choosing this option, but the LQFP-100 format is particularly useful for through-hole prototyping and automated assembly. Firmware must configure the clock tree, low-power modes, USB transceiver, analog peripherals, and alternate-function routing before the full device capability becomes available. The pin-description and alternate-function tables in the manufacturer datasheet should be used for every PCB assignment. This product page combines the manufacturer-described device characteristics with practical application guidance, footprint selection advice, and electrically focused alternatives. These engineering-oriented details help teams distinguish the STM32L151VBT6 from lower-pin-count, higher-memory, or functionally adjacent STM32L1 devices before committing to a board design.

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STM32L151VCT6 - 256KB Flash Cortex-M3 MCU | STMicroelectronics
STM32L151VCT6

STM32L151VCT6 - 256KB Flash Cortex-M3 MCU | STMicroelectronics

The STMicroelectronics STM32L151VCT6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller with 256 Kbytes of Flash, 32 Kbytes of SRAM, and a 32 MHz CPU, housed in a 100-pin LQFP (14x14 mm) package. According to the ST product page, this device is part of the STM32L1 family, integrates USB FS, three rail-to-rail operational amplifiers, a 12-bit ADC, multiple timers, and standard communication peripherals. What is an ultra-low-power MCU? An ultra-low-power microcontroller is a class of embedded processor specifically designed to minimize active and standby current consumption so that battery-powered products can operate for months or years on a single cell. The technology hierarchy is: MCU -> microcontroller -> embedded processor -> semiconductor IC. The STM32L1 family extends ST's mainstream STM32 architecture into energy-harvesting, metering, medical, and IoT segments where quiescent current in the microampere range and flexible low-power modes are critical. Key features highlighted in the datasheet include seven low-power modes (including Stop and Standby with RTC), a wide 1.65-3.6 V supply range, up to 83 general-purpose I/Os, a 12-bit 1 Msps ADC, two 12-bit DACs, USB 2.0 Full-Speed device, three op-amps, two comparators, and a real-time clock with calendar. The integrated voltage regulator and power-on reset simplify external circuitry, while the Cortex-M3 core supports Thumb-2 instruction set for high code density. The STM32L151VCT6 uses a 32 kHz and an internal 16 MHz high-speed RC oscillator with PLL, eliminating external crystals in many designs. JTAG and SWD debug interfaces support standard toolchains including Keil MDK, IAR EWARM, and STM32CubeIDE. AES 128-bit hardware encryption is included in this density variant of the STM32L1 line for secure connectivity use cases. Typical applications include battery-operated sensor nodes, USB peripherals (HID, CDC), portable medical devices, smart-home IoT endpoints, energy-harvesting designs, and industrial metering. The combination of USB, op-amps, and low-power modes is particularly attractive for compact measurement instruments that must communicate with a host PC. When designing with the STM32L151VCT6, select decoupling capacitors of 100 nF near each VDD pin plus a 4.7 uF bulk capacitor. Verify unused pins are tied to a defined logic level to avoid parasitic current paths. The LQFP-100 footprint has 0.5 mm pitch - use 4-layer PCB with controlled impedance for USB D+/D- traces. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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STM32L151VCT6A - 256KB Flash 32MHz Cortex-M3 MCU | STMicroelectronics
STM32L151VCT6A

STM32L151VCT6A - 256KB Flash 32MHz Cortex-M3 MCU | STMicroelectronics

The STMicroelectronics STM32L151VCT6A is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller with 256KB of Flash memory, 32KB of SRAM, and a 32MHz CPU, housed in a 100-pin LQFP (14x14mm) package. The 'A' suffix denotes the industrial-grade operating temperature range (-40C to +85C) and tape-and-reel packaging. As part of the STM32L1 family, it targets battery-powered and energy-harvesting applications where every microamp counts. A microcontroller (MCU) is a single-chip computer integrating a CPU core, volatile memory (SRAM), non-volatile memory (Flash), and programmable peripherals into one package. The STM32L1 series specifically occupies the 'ultra-low-power' tier of the MCU taxonomy - sitting between general-purpose Cortex-M0/M3 microcontrollers and dedicated signal-processing MCUs - and is hierarchically classified as: microcontroller -> embedded processor -> semiconductor. The L1 family uses ST's proprietary ultra-low-leakage process and an innovative autonomous dynamic voltage scaling (DVS) topology. Key features include 4KB of true EEPROM (a rare find on Cortex-M MCUs), 12-bit ADC, 12-bit DAC, multiple low-power modes (Standby, Stop, Sleep) drawing as little as 1.4 uA in Stop mode with RTC retention, and a built-in USB 2.0 Full-Speed controller with on-chip transceiver. The 100-LQFP package exposes up to 83 GPIO across multiple 5V-tolerant ports, plus USART, SPI, I2C, USB, CAN, and timers. The Cortex-M3 core delivers 1.25 DMIPS/MHz (Dhrystone MIPS) while supporting Thumb-2 instructions for code density. The integrated voltage regulator dynamically scales the internal core voltage based on clock frequency, enabling the dynamic voltage scaling that defines the L1 family. Five low-power modes - Sleep, Low-Power Sleep, Stop with RTC, Standby, and Standby with RTC - allow energy budgets as low as 9 uA/MHz active and 1.4 uA Stop. Typical applications include wearable fitness bands, portable medical sensors, wireless sensor nodes, smart meters, industrial remote controls, and battery-backed IoT devices. The 256KB Flash is sufficient for RTOS-based designs using FreeRTOS or for BLE/ZigBee stacks when paired with a network co-processor. The integrated 4KB EEPROM eliminates the need for external EEPROM in many designs, simplifying BOM and lowering cost. When designing with the STM32L151VCT6A, choose the LQFP-100 footprint for hand-rework-friendly prototypes and migration to other L1 family parts. Verify your Stop-mode current budget against the 1.4 uA typical figure (it rises to several uA with RTC enabled). For 1.8V-3.6V supply, internal voltage regulation is automatic; at lower voltages the integrated POR/PDR handles brownout reset. This page synthesizes distributor pricing from DigiKey and Mouser, drop-in alternatives within the same LQFP-100 package, and practical design notes not found in the manufacturer datasheet - giving engineers a faster path from part selection to prototype.

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STM32L151VCT6D - 32MHz Cortex-M3 MCU 256KB Flash | STMicroelectronics
STM32L151VCT6D

STM32L151VCT6D - 32MHz Cortex-M3 MCU 256KB Flash | STMicroelectronics

The STMicroelectronics STM32L151VCT6D is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller with 256 Kbytes of Flash, 32 Kbytes of SRAM, and 8 Kbytes of true EEPROM, packaged in a 100-pin LQFP (14x14 mm). Operating at up to 32 MHz, it integrates USB 2.0 Full-Speed, three operational amplifiers, a 12-bit ADC and DAC, an LCD controller, and a wide range of peripherals designed for battery-powered and energy-harvesting applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable I/O peripherals. The Cortex-M3 architecture used in the STM32L151 family provides a 32-bit instruction set with deterministic interrupt handling, sitting in the broader hierarchy ARM Cortex-M -> 32-bit MCU -> embedded processor -> semiconductor. Within ST's portfolio, the STM32L1 series is positioned in the ultra-low-power (ULP) tier, competing with the MSP430 (Texas Instruments) and the EFM32 (Silicon Labs) families. Key specifications include the 256 Kbyte Flash program memory, 32 Kbyte SRAM, 8 Kbyte EEPROM, an operating voltage range of 1.65 V to 3.6 V, a maximum CPU speed of 32 MHz, and an extended industrial temperature range of -40 C to +105 C. The integrated 12-bit ADC delivers up to 1 Msps with multiple channels, while the 12-bit DAC supports low-power waveform generation. Three on-chip op-amps enable direct analog signal conditioning without external components, simplifying sensor-interface designs. The 100-pin LQFP package provides ample GPIO for complex peripheral routing. USB 2.0 Full-Speed with on-chip PHY, multiple USART/UART/SPI/I2C interfaces, and an 8x40 (or 4x44) segment LCD controller make this device well suited for human-machine interfaces and connected sensor nodes. Deep power modes (Standby, Stop with RTC) reach sub-microamp currents, enabling multi-year battery life in metering and IoT applications. Typical applications include industrial wireless sensor nodes, portable medical monitors, smart meters, home automation gateways, asset-tracking tags, and ultra-low-power data loggers. The integrated op-amps are commonly used to amplify signals from thermocouples, photodiodes, and Wheatstone-bridge sensors. When designing with this device, take advantage of the integrated op-amps to reduce BOM and PCB area, but verify that the op-amp bandwidth and rail-to-rail input range meet your sensor signal requirements. The on-chip EEPROM (rather than emulated EEPROM in Flash) provides 100 k erase/write cycles endurance, simplifying data logging. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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STM32L151VDT6 - Ultra-Low-Power ARM Cortex-M3 MCU | STMicroelectronics
STM32L151VDT6

STM32L151VDT6 - Ultra-Low-Power ARM Cortex-M3 MCU | STMicroelectronics

The STMicroelectronics STM32L151VDT6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M3 core, operating at up to 32 MHz. It features 384 KB of Flash memory and 48 KB of SRAM, making it suitable for a wide range of battery-powered and energy-efficient applications. The device is housed in a 100-pin LQFP package (14x14 mm) and supports a supply voltage range of 1.8V to 3.6V. 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 typically integrates multiple low-power modes, such as sleep, stop, and standby, to reduce power draw during idle periods. In the system hierarchy, an ultra-low-power MCU falls under the category of microcontrollers, which are part of embedded systems and integrated circuits. The STM32L1 series is specifically optimized for applications where battery life is critical, such as portable medical devices, smart sensors, and wireless communication nodes. Key features of the STM32L151VDT6 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 1 Msps, two 12-bit DACs, and a wide range of communication interfaces including USART, SPI, I2C, USB, and CAN. The device also integrates a real-time clock (RTC) with calendar and alarm functions, and a true EEPROM emulation capability. Technically, the STM32L151VDT6 is built on a 130nm process technology, which contributes to its low power consumption. The core operates at 1.8V to 3.6V, and the device can run at up to 32 MHz. The Flash memory is organized with 4x64 KB sectors, and the SRAM is 48 KB. The device supports a wide operating temperature range of -40°C to +85°C, making it suitable for industrial applications. Typical applications include portable medical devices (e.g., glucose meters, pulse oximeters), smart meters, wireless sensor nodes, and industrial control systems. The ultra-low-power modes allow the MCU to operate for years on a single coin cell battery in applications with low duty cycles. When designing with this device, it is important to consider the power supply decoupling: place a 100nF capacitor close to each VDD pin and a 4.7uF capacitor at the main power input. Additionally, the VBAT pin should be connected to a backup battery or a capacitor to maintain RTC operation during main power loss.

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STM32L151ZET6 - 32MHz Cortex-M3 512KB MCU | STMicroelectronics
STM32L151ZET6

STM32L151ZET6 - 32MHz Cortex-M3 512KB MCU | STMicroelectronics

The STMicroelectronics STM32L151ZET6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller operating at up to 32 MHz, with 512 KB of embedded Flash memory, 80 KB of SRAM, USB, and two operational amplifiers, housed in a 144-LQFP 20 x 20 mm package. The verified distributor data identifies a 2.5 V to 3.3 V supply arrangement, 115 GPIO, 12-bit and 12-bit conversion resources, and an industrial temperature range of -40 °C to +85 °C. A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripherals, and communication interfaces on one device. The STM32L1 family belongs to the broader hierarchy of microcontroller, embedded processor, semiconductor, and electronic-component categories. The STM32L151ZET6 is intended for designs that require substantial embedded memory, a large pin count, low-power operation, USB connectivity, and analog signal conditioning in a single package. The STM32L151ZET6 combines a 32 MHz ARM Cortex-M3 processor with 512 KB of Flash and 80 KB of SRAM. Its 144-pin LQFP package provides 115 GPIO according to the verified listing, enabling extensive connections to sensors, actuators, human-interface interfaces, communications equipment, and external memory or peripheral devices. The integrated USB interface and dual operational amplifiers reduce the need for separate support components in suitable USB-enabled and analog designs. The STM32L1 architecture is positioned for low-power embedded systems where energy efficiency and control capability are both important. Its supply range, conversion resources, GPIO count, and memory capacity make it suitable for industrial control, data acquisition, USB peripherals, communications equipment, and embedded instrumentation. The large 144-LQFP footprint is useful when the design requires many discrete I/O connections and offers straightforward assembly in through-hole-compatible production processes. Because the verified data does not include the complete electrical limits, peripheral map, watchdog details, clock-tree configuration, or a manufacturer-authoritative pinout, those values should be confirmed in the STMicroelectronics device documentation before schematic capture or PCB release. The 115-GPIO figure, 512 KB Flash, 80 KB SRAM, 32 MHz maximum CPU frequency, USB capability, dual operational amplifiers, and -40 °C to +85 °C range are directly reflected in the supplied distributor information. Pricing shown here reflects the quoted distributor unit price as of 2026-10-30 and may change with quantity and market conditions. This page combines verified sourcing data, practical application fit, package information, and a conservative comparison of available drop-in information. The replacement search identified STM32L152ZET6 as the closest documented same-package family alternative, while the broader cross-reference results caution that pin compatibility alone does not guarantee code, timing, or peripheral equivalence.

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STM32L152C8U6 - 32MHz Cortex-M3 64KB MCU | STMicroelectronics
STM32L152C8U6

STM32L152C8U6 - 32MHz Cortex-M3 64KB MCU | STMicroelectronics

The STMicroelectronics STM32L152C8U6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller rated at 32 MHz, with 64 KB of Flash memory and 48-pin UFQFPN packaging at 7 mm by 7 mm. The listing identifies an MCU rather than a discrete power device, so its main design value is integrated control, communication, analog conversion, and low-power management. A microcontroller is a semiconductor that executes embedded firmware from nonvolatile Flash memory and coordinates a system’s sensors, communications, timers, and actuators. The STM32L1 series belongs to the ARM Cortex-M3 microcontroller hierarchy and combines processor performance, memory, serial interfaces, analog peripherals, and power-management functions on one integrated circuit. This makes the STM32L152C8U6 suitable for compact embedded products that need several peripherals without a discrete processor. Verified distributor information identifies a 32-bit architecture, 32 MHz operating frequency, 64 KB Flash, and 48-pin UFQFPN package. Search results also describe the family as ultra-low power and list RTC, LCD, USB, USART, I2C, SPI, timers, ADC, DAC, and comparators. A secondary result snippet additionally reports 128 KB Flash, 16 KB SRAM, and 4 KB EEPROM for STM32L152-family documentation, but that conflicts with the exact-part DigiKey result identifying this orderable MPN as 64 KB; the exact MPN listing is therefore used. The peripheral mix makes the device useful for USB-connected sensing, industrial data acquisition, meter and instrument control, low-power monitoring, and LCD-based user interfaces. Its 32 MHz Cortex-M3 core provides a common ARM software ecosystem, while ADC, DAC, and comparator resources can reduce the need for external signal-conditioning or conversion components. Firmware compatibility, peripheral availability, and electrical limits must still be checked against the exact STM32L152C8U6 datasheet. A critical design consideration is that the 48-pin UFQFPN package exposes an exposed thermal and electrical pad whose connection requirements must follow the manufacturer land pattern. Decoupling, exposed-pad soldering, clock stability, and analog grounding should be planned before PCB release. Because the supplied source snippets do not provide a complete verified pin list, no guessed pin assignments are used here. This page consolidates exact distributor and manufacturer-source facts, identifies uncertainty where snippets conflict, and avoids treating generic STM32L1 family features as exact specifications unless the provided evidence identifies them for STM32L152C8U6. It also distinguishes verified sourcing information from parameters requiring confirmation in the full manufacturer datasheet.

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STM32L152QCH6 - 32MHz 256KB Flash USB MCU | STMicroelectronics
STM32L152QCH6

STM32L152QCH6 - 32MHz 256KB Flash USB MCU | STMicroelectronics

The STMicroelectronics STM32L152QCH6 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller operating at 32 MHz with 256 KB of Flash memory in a 132-UFBGA package measuring 7 x 7 mm. It is designed for embedded applications that require USB connectivity, low-power operation, and a compact surface-mount footprint. What is an ultra-low-power microcontroller? An ultra-low-power MCU is a semiconductor controller designed to complete its processing function while consuming minimal energy, especially during sleep, stop, and standby modes. The STM32L1 MCU family combines an ARM Cortex-M3 processor, embedded memory, peripheral interfaces, and power-management capabilities into one device. STM32L152QCH6 belongs to the STM32L15 low-power MCU family and is suited to portable, industrial, sensor, and connected embedded systems. Verified product information identifies a 32-bit ARM Cortex-M3 core, a maximum stated operating frequency of 32 MHz, 256 KB of Flash, USB connectivity, and an 8 microsecond wake-up time. These features support responsive low-power operation while retaining sufficient processing capability for protocol handling, control logic, data acquisition, and low-power communications. The 132-UFBGA package provides a compact 7 x 7 mm solution for space-constrained boards. The STM32L152QCH6 is part of the STM32L15 ultra-low-power platform. Its USB capability makes it relevant to devices requiring a standards-based USB interface, while the microcontroller architecture supports real-time embedded control. Compared with a general-purpose microcontroller, the low-power focus is useful when the duty cycle is intermittent or when battery life, standby consumption, and wake-up behavior are important design objectives. Typical applications include USB-connected sensor nodes, compact industrial controllers, low-power data loggers, medical and diagnostic equipment, portable monitoring devices, and embedded systems that need a small Cortex-M3 controller. The device can serve as a system controller when the application requires USB connectivity and low-power behavior rather than high multimedia processing. Designers should verify the exact pinout, power requirements, clock configuration, USB routing, decoupling, and programming workflow against the STMicroelectronics datasheet before layout or firmware deployment. Because the supplied verified data does not include a complete manufacturer pin table, package dimensions beyond the stated 7 x 7 mm package, or a verified unit-price schedule, those details should not be inferred. The part should be selected only after checking the complete electrical and mechanical requirements for the target design.

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STM32L152R6T6A - 32KB Flash Cortex-M3 MCU w/ USB & LCD
STM32L152R6T6A

STM32L152R6T6A - 32KB Flash Cortex-M3 MCU w/ USB & LCD

The STMicroelectronics STM32L152R6T6A is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller with 32 KB of Flash, 32 MHz CPU, integrated LCD driver and full-speed USB 2.0 connectivity, housed in a 64-pin LQFP (10x10 mm) package. It is part of the STM32L1 ultra-low-power family with the "-A" automotive suffix, supporting 1.65 V to 3.6 V supply operation and embedding up to 10 KB of SRAM plus 4 KB of true EEPROM. An ARM Cortex-M3 microcontroller is a 32-bit RISC processor core designed for embedded applications that require deterministic real-time response, low interrupt latency, and high code density through the Thumb-2 instruction set. In the broader taxonomy, the STM32L152 sits at the intersection of microcontroller (MCU), ultra-low-power MCU, mixed-signal MCU (with LCD + USB), and 32-bit MCU. The STM32L1 family is the silicon ancestor of the STM32L0, L4, L4+, U5 and H5 lines, all sharing ST's ultra-low-power工艺 philosophy and the Cortex-M lineage. Key differentiating features include five low-power modes (Sleep, Low-Power Sleep, Stop with RTC, Standby with RTC, and Stop without RTC) reaching 1.4 µA in Stop-with-RTC, an integrated LCD driver for up to 8x40 segments directly driving glass, a 12-bit ADC and 12-bit DAC, multiple timers, and a USB 2.0 full-speed device/host/OTG controller. The embedded voltage regulator, multiple DMA controllers, and the standard STM32 peripheral set (USART, SPI, I2C, USB, GPIO) make it a system-in-package for many battery-powered designs. Architecturally, the Cortex-M3 core runs up to 32 MHz with 1.25 DMIPS/MHz, paired with ST's ultra-low-power工艺 and a 1.8 V internal core domain. The ART Accelerator (no instruction-cache pre-fetch on L1, but a flash-accelerator block) keeps execution deterministic from Flash, and the MPU supports up to 8 regions. Compared with the older STM32F1 series, the L1 trades raw MHz for dramatically lower active and standby power. Typical applications include battery-powered metering (gas/water/heat) with direct LCD readout, portable medical sensors, fitness wearables, GPS asset trackers, and industrial sensor nodes requiring USB-CDC for service. The integrated LCD driver saves a costly external charge-pump driver and lets a single chip display digits on a static, multiplexed or capacitive-effect glass. When designing with this device, choose the LQFP-64 (R suffix in the line-up) over QFN if you need hand-rework-friendly pins or expect hand-prototype workflows; QFN variants are footprint-compatible at the die level but require careful PCB thermal design. Verify the LCD glass type (static, 1/2, 1/3, 1/4 duty, and bias) and segment count early in the schematic phase - the LCD peripheral supports up to 8 commons, but pin budget and alternate-function remap must be planned. This page synthesizes distributor pricing, drop-in alternatives across the STM32L1 line, automotive-grade sibling MPNs, and practical low-power design notes that go beyond what is on the ST datasheet alone.

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STM32L152ZCT6 - 32MHz Cortex-M3 256KB MCU | STMicroelectronics
STM32L152ZCT6

STM32L152ZCT6 - 32MHz Cortex-M3 256KB MCU | STMicroelectronics

STMicroelectronics STM32L152ZCT6 is a 32-bit ARM Cortex-M3 microcontroller with a 32 MHz operating frequency, 256 KB of flash memory, and a 144-pin LQFP package measuring 20 mm by 20 mm. The STM32L152 series combines an ultra-low-power microcontroller platform with USB and LCD connectivity, making the device suitable for embedded systems that require a combination of low-power operation, serial connectivity, and a relatively high pin count. A microcontroller is a programmable system-on-chip containing a processor core, memory, and peripherals such as communications interfaces, timers, and analog converters. The STM32L152 belongs to the STM32L1 low-power MCU family, with the Cortex-M3 core providing a 32-bit RISC processing architecture. Its 256 KB program memory is organized as 256K by 8 bits, while the 144-pin package provides access to a broad selection of GPIO and peripheral functions. The verified product data identifies a maximum core frequency of 32 MHz, an operating supply value of 3 V, USB and LCD support, and a fast 8 microsecond wake-up time. These features distinguish the part for portable instruments, connected embedded controls, industrial data-acquisition equipment, and human-machine-interface designs. The USB interface can support direct host or device connectivity, while LCD connectivity reduces the component count required for display-based products. The Cortex-M3 core executes 32-bit instructions and operates at 32 MHz. The STM32L152 is positioned as an ultra-low-power platform, making power-conscious operation a central design consideration alongside processing performance. The manufacturer datasheet should be consulted for detailed clock-tree limits, peripheral electrical characteristics, GPIO alternate-function assignments, current consumption, and operating-temperature limits that are not included in the supplied distributor summaries. Typical uses include USB-connected portable measurement devices, industrial control panels with LCD feedback, data loggers, low-power sensor nodes, and embedded human-machine interfaces. The 144-pin LQFP package offers extensive I/O capacity compared with smaller MCU packages, although its 20 mm by 20 mm footprint requires more PCB area than QFN alternatives. The package also provides exposed leads that simplify visual inspection and rework compared with fine-pitch no-lead packages. Designers should verify every assigned pin against the STM32L152ZCT6 pinout and alternate-function tables before PCB release. Pay particular attention to USB signal routing, analog inputs, oscillator connections, supply pins, and debugging functions. Because only summarized source data is available here, voltage tolerances, RAM capacity, GPIO count, ADC channels, and package-specific thermal limits must be confirmed from the manufacturer datasheet rather than inferred from the product family. This product page consolidates verified distributor specifications, pricing, package information, practical design guidance, and same-footprint family alternatives. It also distinguishes confirmed values from parameters that still require datasheet verification, helping engineers make procurement and design decisions without relying on unsupported assumptions.

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STM32L152ZDT6 - 32MHz Cortex-M3 USB MCU | ST
STM32L152ZDT6

STM32L152ZDT6 - 32MHz Cortex-M3 USB MCU | ST

STMicroelectronics STM32L152ZDT6 is an ultra-low-power 32-bit microcontroller with an Arm Cortex-M3 core, a maximum 32 MHz operating frequency, 384 KB of Flash memory, USB connectivity, and 144 leads in an LQFP 20 x 20 mm package. It combines an 8 μs wake-up time with low-power operating modes for responsive, energy-conscious embedded systems. The STM32L152ZDT6 also provides an RTC, LCD support, analog functions, 10 serial ports, and a memory interface within a single integrated circuit. What is an ultra-low-power microcontroller? An ultra-low-power microcontroller is a semiconductor controller designed to execute firmware while minimizing energy consumption, particularly during idle, sleep, and standby periods. In the device hierarchy, the STM32L152ZDT6 is an Arm Cortex-M3 microcontroller, a 32-bit reduced-instruction-set processor platform, within the STM32 family of embedded processors and the broader category of embedded semiconductors. Its combination of USB connectivity, real-time-clock capability, analog functions, and low-power wake-up makes it suitable for connected embedded equipment that must balance responsiveness with restricted energy budgets. Key features include the 32 MHz Arm Cortex-M3 processor, 384 KB of Flash memory, and integrated USB connectivity. The 10 serial ports support multiple communication tasks without requiring a separate protocol controller. An RTC provides timekeeping for data logging, alarms, and scheduled operations, while LCD support can simplify instrument and human-interface designs. The manufacturer material also identifies analog functions, a memory interface, seven low-power modes, and an 8 μs wake-up time as defining characteristics of the STM32L152xD family. Technically, the STM32L152ZDT6 belongs to the STM32L1 low-power microcontroller family and supports operation at up to 32 MHz. Its extensive peripheral integration reduces the number of external devices required in USB-connected embedded products. The 144-LQFP package also provides a large pin count, supporting the family connectivity, analog, timing, and memory-interface functions. The supplied source data confirms the 384 KB Flash configuration but does not specify RAM capacity, exact analog converter performance, pin assignments, or detailed absolute maximum ratings; these values must be confirmed in the manufacturer documentation. Typical applications include low-power USB data loggers, industrial sensing nodes, battery-powered instruments, LCD-equipped control panels, and connected embedded accessories. In each case, the combination of USB, RTC, serial interfaces, analog functions, and fast wake-up can reduce board complexity. Designers should also evaluate whether the 384 KB Flash configuration is sufficient for the firmware image, USB stack, bootloader, diagnostics, and application data before committing to a PCB layout. A key design consideration is that firmware, USB enumeration, clock configuration, and low-power state transitions must be coordinated to obtain the intended energy profile. USB connection can influence whether the device remains in a low-power state, so the application should use the manufacturer's clock, GPIO, and low-power recommendations. Decoupling, exposed-pad or thermal considerations, and signal routing should be designed from the complete package documentation rather than inferred from the distributor summaries. This page consolidates verified distributor and manufacturer information, a 144-LQFP package identity, pricing evidence, application guidance, and a documented scarcity of verified drop-in alternatives. It also separates confirmed STM32L152ZDT6 characteristics from parameters that still require engineering verification, helping procurement and design teams make traceable engineering decisions without treating generic STM32 alternatives as automatic replacements.

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STM32L162QCH6 - 32MHz Cortex-M3 MCU | STMicroelectronics
STM32L162QCH6

STM32L162QCH6 - 32MHz Cortex-M3 MCU | STMicroelectronics

The STMicroelectronics STM32L162QCH6 is an ultra-low-power, 32-bit ARM Cortex-M3 microcontroller with 256 KB of Flash memory, 32 MHz processing, and a 132-pin UFBGA package. It is designed for embedded systems that need a combination of low-power operation, USB connectivity, LCD support, analog conversion, cryptography, and a broad set of serial interfaces. An ultra-low-power microcontroller is a semiconductor device designed to minimize energy consumption during active operation, standby, and low-power modes. STM32L1 devices belong to the broader hierarchy of ARM Cortex-M3 microcontrollers, embedded processors, and semiconductor control components. This makes the STM32L162QCH6 relevant to battery-powered instruments, industrial controls, medical equipment, connected sensors, and compact human-interface systems. Verified listing data identifies a 32-bit Cortex-M3 core operating at 32 MHz, 256 KB Flash, 32 KB SRAM, and 8 KB EEPROM. The device also includes USB, LCD, ADC, DAC, and AES-128 hardware acceleration according to the available technical summaries. Its 2.5 V to 3.3 V supply description reflects a low-voltage embedded platform intended for efficient digital control and mixed-signal designs. The STM32L162QCH6 provides 132 package connections, allowing integration of multiple I/O resources and communication peripherals on a compact surface-mount footprint. The verified distributor listing identifies the package as 132-UFBGA, while another result describes the same device as a 132-pin package. The package pinout and exact electrical limits should be confirmed against the manufacturer datasheet before PCB release. Typical applications include USB-connected portable instruments, low-power sensor nodes, LCD-based user interfaces, industrial monitoring systems, and secure embedded controllers. Compared with a general-purpose Cortex-M3 MCU, the STM32L162 family is positioned around low-power operation and integrated features such as LCD, USB, DAC, and AES-128 support. Designers should preserve the manufacturer-recommended decoupling, clock, reset, and exposed-power connections. USB signal routing requires controlled impedance and short traces, while low-power and analog sections should be separated carefully to reduce noise coupling. Validate final firmware against the exact order code and package variant. This page consolidates verified distributor specifications, sourcing information, application guidance, and drop-in-alternative validation limits for STM32L162QCH6. It is intended to support engineering comparison, procurement review, and preliminary design work rather than replace the manufacturer datasheet or qualification process.

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