Microcontrollers
Products (422)
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.
STM32L072VZT6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
The STM32L072VZT6 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 192 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. The device is housed in a 100-pin LQFP package (LQFP100) with a 14x14 mm body and 0.5 mm pitch, offering a compact footprint for space-constrained designs. What is an ARM Cortex-M0+ microcontroller? It is a 32-bit processor core designed for ultra-low-power and cost-sensitive embedded applications. The Cortex-M0+ is the smallest and most energy-efficient ARM processor, featuring a two-stage pipeline that reduces power consumption while maintaining deterministic interrupt handling. In the system hierarchy, the STM32L072VZT6 sits at the application processor level, managing sensors, actuators, and communication interfaces, while the Cortex-M0+ core executes user firmware. This category of microcontrollers is widely used in IoT nodes, wearable devices, and industrial sensors where battery life is critical. Key features of the STM32L072VZT6 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, two 12-bit DACs, a USB 2.0 full-speed device controller, and multiple communication interfaces including I2C, SPI, USART, and LPUART. The device also integrates a real-time clock (RTC) with calendar and alarm functions, and a true random number generator (RNG) for security applications. The operating voltage range is 1.8V to 3.6V, with a typical power consumption of 84 uA/MHz in Run mode and 0.29 uA in Standby mode with RTC. From a technical depth perspective, the STM32L072VZT6 is built on ST's ultra-low-power technology platform, which includes a flexible clock gating and power management scheme. The device features a 12-bit ADC with up to 16 external channels and a conversion rate of 1 Msps, along with a 12-bit DAC with output buffer. The USB controller supports battery charging detection and link power management, making it suitable for portable devices. The device also includes a hardware CRC calculation unit and a unique 96-bit ID for device identification. Typical applications include smart meters, fitness trackers, medical monitoring devices, and industrial sensor nodes. The ultra-low-power modes and rich analog peripherals make it particularly well-suited for applications that require long battery life and precise analog measurements. For example, in a smart meter, the STM32L072VZT6 can read current and voltage sensors, compute energy consumption, and communicate via wireless modules while spending most of its time in low-power sleep modes. When designing with this device, pay attention to the power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 uF capacitor on the main VDD rail. For the VDDA analog supply, use a dedicated 1 uF capacitor and a ferrite bead to isolate digital noise. The VBAT pin should be connected to a backup battery or tied to VDD if not used. Also, ensure the BOOT0 pin is properly configured to select the desired boot mode.
STM32L073RZT6 - ARM Cortex-M0+ 192KB Flash MCU | STMicroelectronics
The STM32L073RZT6 is a 32-bit ARM Cortex-M0+ based microcontroller from STMicroelectronics, featuring 192KB of Flash memory and 20KB of RAM. It operates at a maximum frequency of 32 MHz and is designed for ultra-low-power applications, offering multiple low-power modes including Sleep, Low-power Run, Low-power Sleep, Stop with RTC, Stop, and Standby. The device is housed in a 64-pin LQFP package (T6 suffix indicates LQFP64) and supports a wide supply voltage range from 1.8V to 3.6V. What is a microcontroller? A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory (Flash and RAM), and programmable input/output peripherals on a single chip. Microcontrollers are the brain of countless electronic devices, from automotive engine control units to IoT sensors and medical devices. The STM32L0 series is part of the broader STM32 family, which is a leading 32-bit MCU platform based on ARM Cortex cores. The STM32L0 series specifically targets ultra-low-power applications, extending battery life in portable and energy-harvesting devices. Key features of the STM32L073RZT6 include a 12-bit ADC with hardware oversampling (up to 16-bit resolution), two 12-bit DACs, two comparators, an operational amplifier, a USB 2.0 full-speed device controller, and multiple communication interfaces: two I2C, two SPI, two USART, and one LPUART. It also integrates a real-time clock (RTC) with calendar and alarm functions, a true random number generator (RNG), and a CRC calculation unit. The device supports a wide range of timers, including one 16-bit advanced-control timer, several 16-bit general-purpose timers, and a low-power timer. The STM32L073RZT6 is built on STMicroelectronics' ultra-low-power technology, achieving a typical current consumption of 0.29 µA in Standby mode with RTC, and 3.4 µA in Stop mode with RTC. The device also features a flexible power management with a built-in DC-DC converter option, allowing further power savings. The microcontroller is supported by the STM32CubeL0 software package, which includes HAL drivers, middleware, and examples, enabling rapid development. Typical applications include battery-powered devices, IoT sensors, smart meters, medical devices, and portable consumer electronics. The rich analog peripherals and low-power modes make it ideal for sensor hubs and data acquisition systems. The USB interface enables direct connectivity to hosts for data logging or firmware updates. When designing with this device, pay attention to the power supply decoupling: place a 100nF capacitor close to each VDD pin and a 4.7µF capacitor on the main VDD rail. For low-power operation, configure unused GPIOs as analog inputs to avoid leakage currents. The device supports in-application programming (IAP) via the bootloader in system memory, facilitating firmware updates over USB or UART.
STM32L073VZT6 - 192KB Flash, 32MHz ARM Cortex-M0+ MCU | STMicroelectronics
The STMicroelectronics STM32L073VZT6 is an ultra-low-power ARM Cortex-M0+ microcontroller with 192KB of Flash memory and 20KB of RAM, operating at a maximum frequency of 32MHz. It is housed in a 100-pin LQFP package (14x14mm) and is part of the STM32L0 series, designed for battery-powered and energy-efficient applications. What is an ARM Cortex-M0+ microcontroller? It is a 32-bit processor core designed for low-power and cost-sensitive embedded applications. The Cortex-M0+ is the smallest and most energy-efficient ARM processor, offering a balance between performance and power consumption. In the system hierarchy, it sits above 8-bit microcontrollers (like AVR or PIC) but below higher-performance Cortex-M3/M4 cores. It is widely used in IoT devices, sensor nodes, and portable electronics where long battery life is critical. Key features of the STM32L073VZT6 include an ultra-low-power mode with 0.29uA standby current, a 12-bit ADC with hardware oversampling, multiple communication interfaces (USART, SPI, I2C, USB 2.0 full-speed), and a real-time clock with calendar. It also integrates an LCD driver supporting up to 8x40 segments, making it suitable for display applications. The device operates from 1.8V to 3.6V, with a wide temperature range of -40C to +85C. Technically, the STM32L073VZT6 is built on a 40nm process technology, enabling its low power consumption. It features a flexible clock system with an internal 16MHz RC oscillator and an external crystal oscillator up to 32MHz. The microcontroller includes a memory protection unit (MPU) and a single-cycle multiply instruction, enhancing its computational efficiency. The 12-bit ADC can achieve up to 1.14 Msps with hardware oversampling, providing high-resolution analog measurements. Typical applications include smart meters, industrial sensors, portable medical devices, and IoT endpoints. Its ultra-low-power modes and rich peripheral set make it ideal for battery-operated systems that require long operational life. For example, in a smart meter, the STM32L073VZT6 can handle metering calculations, display updates, and wireless communication while maintaining low average power consumption. When designing with this device, pay attention to the power supply decoupling: place a 100nF capacitor close to each VDD pin and a 4.7uF capacitor on the main supply. Also, configure the clock system carefully to balance performance and power consumption, using the low-speed external oscillator for RTC and the high-speed internal RC for fast wake-up.
STM32L081CBT6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
The STM32L081CBT6 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 provides 192 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. It is a key component in the hierarchy of embedded systems, where it serves as the central processing unit for devices that require long battery life, such as wearables, IoT sensors, and medical monitors. The STM32L0 series is part of the broader STM32 family, which includes higher-performance Cortex-M3/M4/M7 variants, but the L0 series specifically targets power-sensitive applications. Key features of the STM32L081CBT6 include multiple low-power modes (Sleep, Low-power Run, Low-power Sleep, Stop, Standby), a 12-bit ADC with hardware oversampling, a 12-bit DAC, two comparators, and a USB 2.0 full-speed device controller. It also integrates a real-time clock (RTC) with calendar and alarm functions, and a true EEPROM emulation using the Flash memory. The device supports a wide supply voltage range from 1.65V to 3.6V, making it suitable for single-cell battery operation. The STM32L081CBT6 is built on ST's ultra-low-leakage process technology, achieving dynamic power consumption as low as 84 µA/MHz in Run mode and 0.29 µA in Standby mode with RTC. This is achieved through a flexible clock gating and power management architecture that allows each peripheral to be independently powered down. The device also includes a hardware cryptographic accelerator (AES-128) for secure data communication. Typical applications include battery management systems, portable medical devices, smart sensors, and IoT nodes. The USB interface enables direct connectivity to hosts for data logging or firmware updates. The rich analog peripherals make it ideal for signal conditioning and measurement applications. When designing with this MCU, careful attention should be paid to the power supply decoupling and the selection of the appropriate low-power mode to balance performance and energy consumption. The device's extensive documentation and STM32Cube ecosystem provide a robust development environment, including HAL libraries and low-layer APIs.
STM32L083RBT6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
The STM32L083RBT6 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 provides 128 KB of Flash memory and 20 KB of SRAM. The device is housed in a 64-pin LQFP package, offering a rich set of peripherals including multiple communication interfaces, analog features, and advanced low-power modes. An ultra-low-power microcontroller (MCU) is a type of embedded processor designed to minimize energy consumption while maintaining sufficient processing capability for battery-powered or energy-harvesting applications. These MCUs typically feature multiple low-power modes, such as sleep, stop, and standby, allowing the system to dynamically trade off performance for power savings. The STM32L0 series sits within the broader STM32 family, which spans from the entry-level Cortex-M0+ parts to high-performance Cortex-M7 devices, and is specifically optimized for applications where power efficiency is paramount. Key features of the STM32L083RBT6 include a 12-bit ADC with hardware oversampling, a 12-bit DAC, two comparators, and an integrated LCD driver supporting up to 8x40 segments. It also offers a comprehensive set of communication peripherals: two I2C interfaces, two SPI interfaces, two USARTs, and one low-power UART. The device supports USB 2.0 full-speed device mode, making it suitable for applications requiring connectivity. Additionally, it includes a hardware random number generator (RNG) and a true RTC with calendar and alarm functions. The STM32L083RBT6 is built on ST's ultra-low-power technology, featuring dynamic voltage scaling and a wide supply voltage range from 1.8V to 3.6V. It achieves a typical power consumption of 0.29 µA in Standby mode with RTC, and 3.4 µA in Stop mode with RTC. The device also supports a low-power run mode at 32 kHz, consuming only 3.2 µA. These characteristics make it ideal for battery-operated devices, such as smart meters, medical monitors, and portable sensors. Typical applications include smart meters, healthcare devices, industrial sensors, and IoT nodes. The integrated LCD driver simplifies the design of display-equipped devices, while the multiple low-power modes enable extended battery life. The device is also supported by ST's comprehensive ecosystem, including the STM32CubeMX configuration tool and the STM32CubeL0 firmware library, which accelerate development. When designing with this MCU, careful attention should be paid to the power supply decoupling and the selection of the appropriate low-power mode for the application's duty cycle. 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 brown-out reset and power-on reset features ensure reliable operation across the supply voltage range.
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.
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.
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.
STM32L162RCT6 - Ultra-Low-Power ARM Cortex-M3 MCU | STMicroelectronics
The STMicroelectronics STM32L162RCT6 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 32 KB of SRAM, along with a rich set of peripherals including USB, LCD, and AES encryption. The device is housed in a 64-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, designed to minimize energy consumption while maintaining computational capability. The STM32L1 series is STMicroelectronics' flagship low-power family, targeting battery-powered and energy-harvesting applications. It sits within the broader hierarchy of embedded microcontrollers, which are the building blocks of IoT devices, portable medical equipment, and smart sensors. Key features of the STM32L162RCT6 include multiple low-power modes (Sleep, Low-power Run, Low-power Sleep, Stop with RTC, Standby with RTC), a 12-bit ADC with 1 Msps, a 12-bit DAC, and an embedded AES-128 encryption engine. The device also integrates a real-time clock (RTC) with calendar and alarm functions, and supports a wide supply voltage range from 1.8V to 3.6V. The ultra-low-power design achieves a typical current consumption of 3.4 µA in Stop mode with RTC, and 0.27 µA in Standby mode. The STM32L162RCT6 is built on a 130nm low-leakage process technology, which is optimized for minimal static power consumption. The architecture includes a flexible clock tree with multiple internal and external oscillators, allowing designers to trade off performance for power. The AES hardware accelerator offloads cryptographic operations from the CPU, reducing energy consumption for secure communication. Typical applications include smart meters, medical devices (e.g., glucose monitors, hearing aids), industrial sensors, and portable consumer electronics. The integrated LCD controller supports up to 8x40 segments, making it ideal for battery-powered displays. The USB 2.0 full-speed device interface enables direct connectivity to hosts for data logging and firmware updates. When designing with this device, 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 low-speed oscillator (LSI) for the RTC can reduce external component count, but an external 32.768 kHz crystal provides better accuracy for timekeeping applications.
STM32L162RET6 - Ultra-Low-Power ARM Cortex-M3 MCU | STMicroelectronics
The STMicroelectronics STM32L162RET6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M3 core, operating at up to 32 MHz. It features 512 KB of Flash memory and 80 KB of SRAM, along with a rich set of peripherals including USB, LCD, and AES encryption. The device is housed in a 64-pin LQFP package (LQFP64) and is designed for battery-powered and energy-efficient applications. An ultra-low-power microcontroller (MCU) is a type of embedded processor optimized for minimal power consumption, often featuring multiple low-power modes, low supply voltages, and efficient clock management. These MCUs are essential in battery-operated devices, IoT sensors, and portable medical equipment where extending battery life is critical. The STM32L1 series sits within the broader STM32 family, which spans from low-power to high-performance Cortex-M based MCUs, and is part of the ARM Cortex-M ecosystem. Key features of the STM32L162RET6 include a 32 MHz ARM Cortex-M3 core with memory protection unit (MPU), 512 KB Flash, 80 KB SRAM, and a comprehensive set of peripherals: USB 2.0 full-speed device, LCD controller supporting up to 8x40 segments, AES-128 hardware encryption, 12-bit ADC, 12-bit DAC, multiple timers, and communication interfaces (USART, SPI, I2C). It operates from 1.8V to 3.6V supply and features several low-power modes: Sleep, Low-power Run, Low-power Sleep, Stop with RTC, and Standby, with current consumption as low as 0.3 uA in Standby mode. The STM32L162RET6 is built on ST's ultra-low-power technology, which combines a low-leakage process with dynamic voltage scaling and a flexible clock gating architecture. This enables the MCU to achieve industry-leading energy efficiency, with a typical active-mode current of 230 uA/MHz. The integrated AES-128 encryption engine provides hardware-accelerated security for data protection, making it suitable for secure communication and authentication applications. Typical applications include smart meters, medical devices (e.g., glucose monitors, hearing aids), industrial sensors, IoT nodes, and portable consumer electronics. The LCD controller and USB interface make it ideal for human-machine interface (HMI) applications, while the AES engine supports secure data logging and communication. When designing with this device, pay attention to the power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 uF capacitor at the main supply. Use the low-power modes effectively by configuring the RTC and wake-up sources to minimize average current consumption. The STM32L162RET6 is available in LQFP64 package, which is pin-compatible with other STM32L1 series devices in the same package, allowing easy migration.
STM32L162VET6 - 512KB Flash Ultra-Low-Power MCU | STMicroelectronics
The STM32L162VET6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M3 core running at up to 32 MHz. It integrates 512 KB of Flash memory and 80 KB of SRAM, along with a rich set of peripherals including USB, LCD controller, AES encryption, and multiple communication interfaces. Housed in a 100-pin LQFP package, this device is designed for battery-powered and energy-efficient 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 STM32L1 series is STMicroelectronics' flagship ultra-low-power family, positioned within the broader hierarchy of microcontrollers -> 32-bit MCUs -> ARM Cortex-M based MCUs -> STM32 family. These devices are essential in IoT, wearable, and portable medical devices where energy efficiency is critical. 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, an LCD driver supporting up to 8x40 segments, and an AES-128 hardware encryption engine. The device operates from 1.8V to 3.6V and supports a wide temperature range of -40°C to +85°C. Its ultra-low-power design achieves 230 µA/MHz in Run mode and 0.3 µA in Standby mode with RTC, making it ideal for energy-harvesting and long-life battery applications. The STM32L162VET6 is built on a 130nm ultra-low-leakage process technology, enabling industry-leading power efficiency. The Cortex-M3 core includes a memory protection unit (MPU) and supports single-cycle multiplication and hardware division. The device features a flexible clock tree with multiple internal and external oscillators, including a 32 kHz RTC oscillator and a 16 MHz HSI RC oscillator, allowing designers to optimize performance versus power consumption. Typical applications include smart meters, medical devices such as glucose monitors and hearing aids, industrial sensors, and portable consumer electronics. The integrated LCD controller and AES encryption make it particularly suitable for secure, display-equipped battery-powered devices. The USB 2.0 full-speed interface with internal PHY enables direct connectivity to hosts for data logging and firmware updates. When designing with this MCU, careful attention to the power supply decoupling and clock configuration is essential. Use a 1 µF and 100 nF capacitor pair on each VDD pin, and select the appropriate low-power mode based on wake-up latency requirements. The STM32L162VET6 supports in-application programming (IAP) via USART, SPI, or USB, facilitating field firmware updates.
STM32L431CBT6 - ARM Cortex-M4 80MHz MCU | STMicroelectronics
The STM32L431CBT6 is a 32-bit ARM Cortex-M4 microcontroller from STMicroelectronics, featuring a floating-point unit (FPU) and operating at a maximum frequency of 80 MHz. It is part of the STM32L4 series, designed for ultra-low-power applications with a rich set of peripherals. The device is housed in a 48-pin LQFP package (7x7 mm) and offers 128 KB of flash memory and 64 KB of SRAM. What is a microcontroller? A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory (flash and SRAM), and programmable input/output peripherals on a single chip. Microcontrollers are the brains of countless electronic devices, from automotive engine control units to IoT sensors and wearable health monitors. The STM32L431CBT6 belongs to the STM32L4 family, which is optimized for low power consumption without compromising performance, making it ideal for battery-powered and energy-harvesting applications. Key features of the STM32L431CBT6 include an ARM Cortex-M4 core with FPU, 80 MHz maximum clock speed, 128 KB flash, 64 KB SRAM, and a comprehensive set of peripherals such as multiple USARTs, SPIs, I2Cs, ADCs, DACs, timers, and a real-time clock. It also integrates a true random number generator (RNG), a CRC calculation unit, and a memory protection unit (MPU). The device supports a wide supply voltage range from 1.71V to 3.6V and operates over a temperature range of -40°C to +85°C. Technically, the STM32L431CBT6 leverages the ARM Cortex-M4 architecture with DSP instructions and a single-precision FPU, enabling efficient digital signal processing. The STM32L4 series is built on a low-power process technology, achieving ultra-low power consumption in run, sleep, and standby modes. The device includes multiple low-power modes, such as Sleep, Low-power run, Low-power sleep, Stop 0/1/2, and Standby, allowing designers to optimize energy usage based on application requirements. Typical applications include industrial sensors, IoT devices, smart home controllers, portable medical devices, and battery management systems. The combination of low power, high performance, and rich peripherals makes it suitable for applications requiring both computational capability and energy efficiency. When designing with this MCU, pay attention to power supply decoupling and proper grounding. Use a 100nF capacitor close to each VDD pin and a 4.7uF bulk capacitor. For low-power modes, configure the clock system and peripheral clocks appropriately to minimize current consumption. The STM32L431CBT6 supports in-circuit programming and debugging via SWD, facilitating firmware development. 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 STM32L431CBT6.
STM32L431RCT6 - Ultra-Low-Power Cortex-M4 MCU 80MHz 256KB Flash | STMicroelectronics
The STM32L431RCT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core with floating-point unit (FPU). It operates at a frequency of up to 80 MHz and provides 256 KB of Flash memory and 64 KB of SRAM, making it suitable for a wide range of energy-efficient embedded applications. The device is housed in a 64-pin LQFP package (10x10 mm) and is part of the STM32L4 series, which is designed for low-power operation without compromising performance. A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory, and programmable input/output peripherals. The STM32L431RCT6 belongs to the STM32L4 family, which is part of the broader STM32 portfolio of 32-bit microcontrollers. These MCUs are widely used in industrial, consumer, and IoT applications where power efficiency and processing capability are critical. The Cortex-M4 core with FPU enables efficient digital signal processing and floating-point arithmetic, making it ideal for applications such as motor control, sensor fusion, and audio processing. Key features of the STM32L431RCT6 include its ultra-low-power modes, which allow it to achieve very low power consumption in standby and sleep modes, extending battery life in portable devices. It also integrates a rich set of peripherals, including multiple USARTs, SPIs, I2Cs, ADCs, DACs, timers, and a real-time clock. The device supports a wide operating voltage range of 1.71V to 3.6V, making it compatible with standard battery chemistries. Additionally, it features a 12-bit ADC with up to 16 channels, a 12-bit DAC, and an operational amplifier, enabling analog signal processing without external components. From a technical perspective, the STM32L431RCT6 leverages ST's advanced 90nm process technology, which contributes to its low power consumption and high performance. The core runs at up to 80 MHz, delivering 100 DMIPS (Dhrystone 2.1) performance. The device includes a memory protection unit (MPU) and a nested vectored interrupt controller (NVIC) for efficient interrupt handling. It also supports a wide range of communication interfaces, including USB 2.0 full-speed, CAN 2.0B, and SAI (serial audio interface), making it versatile for connectivity applications. Typical applications for the STM32L431RCT6 include industrial sensors, smart meters, portable medical devices, and IoT nodes. Its low-power characteristics make it particularly well-suited for battery-powered devices that require long operational lifetimes. The device also supports a variety of development tools, including STM32CubeIDE, STM32CubeMX, and the STM32CubeL4 firmware package, which simplifies software development and reduces time-to-market. When designing with the STM32L431RCT6, it is important to consider the power supply decoupling and PCB layout to ensure stable operation. The device requires a 100nF capacitor on each power pin and a 4.7uF capacitor on the main supply. Additionally, the VDDA pin should be connected to a clean analog supply to minimize noise in analog peripherals. Proper grounding and layout are essential to achieve the specified performance and low-power operation.
STM32L433RCT6 - Ultra-Low-Power ARM Cortex-M4 MCU | STMicroelectronics
The STM32L433RCT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M4 core with FPU. It operates at a maximum frequency of 80 MHz and provides 256 KB of flash memory and 64 KB of SRAM. The device is housed in a 64-pin LQFP package (LQFP64) and is designed for a wide range of battery-powered and energy-efficient applications. What is an ARM Cortex-M4 microcontroller? It is a 32-bit processor core designed for embedded systems, offering a balance of performance, power efficiency, and rich peripheral integration. The Cortex-M4 includes a floating-point unit (FPU) and DSP instructions, making it suitable for signal processing and control applications. In the system hierarchy, a microcontroller (MCU) integrates a processor core, memory, and programmable peripherals on a single chip, enabling standalone operation in embedded designs. Key features of the STM32L433RCT6 include an ultra-low-power mode with current consumption as low as 100 nA in standby mode, a 12-bit ADC with hardware oversampling, a 12-bit DAC, multiple communication interfaces (USART, SPI, I2C, USB), and a real-time clock (RTC). The device also integrates a flexible power management unit with multiple low-power modes, including Sleep, Low-power Run, and Stop modes, allowing designers to optimize energy consumption for their specific application. Technically, the STM32L433RCT6 is built on ST's advanced 40 nm process technology, which contributes to its low power consumption. The Cortex-M4 core with FPU accelerates mathematical computations, while the ART Accelerator enables zero-wait-state execution from flash memory, improving overall system performance. The device supports a wide operating voltage range from 1.71 V to 3.6 V, making it compatible with standard battery chemistries. Typical applications include smart meters, wearable devices, medical monitoring equipment, industrial sensors, and IoT nodes. Its ultra-low-power features make it ideal for battery-powered devices that require long operational lifetimes, such as wireless sensor networks and portable health monitors. When designing with this MCU, careful attention should be paid to power supply decoupling and PCB layout to minimize noise and ensure reliable operation. The device's multiple low-power modes require proper configuration of wake-up sources and clock sources to achieve optimal energy savings.
STM32L451RET6 - Ultra-Low-Power Cortex-M4 MCU 512KB Flash | STMicroelectronics
The STM32L451RET6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core with floating-point unit (FPU). It operates at a frequency of up to 80 MHz, delivering 100 DMIPS, and is designed for a wide range of battery-powered and energy-efficient applications. The device features 512 KB of Flash memory and 160 KB of SRAM, providing ample storage and execution space for complex firmware. It is housed in a 64-pin LQFP package (10x10 mm), making it suitable for space-constrained designs. A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory, and programmable input/output peripherals. The STM32L451RET6 belongs to the STM32L4 series, which is part of the broader STM32 family of 32-bit microcontrollers. This series is optimized for ultra-low-power consumption, making it ideal for IoT devices, wearables, and industrial sensors. The Cortex-M4 core with FPU enhances performance for digital signal processing (DSP) tasks, while the rich set of analog and digital peripherals enables versatile system integration. Key features of the STM32L451RET6 include a 12-bit ADC with 5 MSPS, two 12-bit DACs, an operational amplifier, a comparator, and a digital filter for sigma-delta modulators (DFSDM). It also supports multiple communication interfaces: I2C, SPI, USART, UART, LPUART, SAI, and CAN. The device integrates a real-time clock (RTC), several timers, and a true random number generator (TRNG). Its ultra-low-power modes, including Sleep, Low-power run, Low-power sleep, Stop 0/1/2, and Standby, allow designers to minimize energy consumption in battery-operated systems. From a technical perspective, the STM32L451RET6 is built on a 40 nm process technology, which contributes to its low power consumption. It operates from a 1.71 V to 3.6 V power supply, and its GPIOs are 5V-tolerant, simplifying interfacing with legacy logic. The device includes a memory protection unit (MPU) and a hardware cryptographic accelerator (AES) for secure applications. The flexible power management with multiple voltage scaling options (Range 1, 2, and 3) allows the core to run at lower voltages to save power when performance is not critical. Typical applications for the STM32L451RET6 include smart meters, medical devices, industrial sensors, portable instrumentation, and IoT edge nodes. Its combination of low power, high performance, and rich analog peripherals makes it a preferred choice for applications requiring long battery life and precise analog measurements. For example, in a smart meter, the MCU can handle metering calculations, communication protocols, and display control while consuming minimal power in standby mode. When designing with this MCU, it is essential to pay attention to the power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 uF capacitor at the main power input. Additionally, the VDDA pin must be connected to a clean analog supply, and the VREF+ pin should be decoupled with a 1 uF capacitor for accurate ADC conversions. Proper layout of the crystal oscillator (if used) is critical for reliable clock operation.
STM32L452RET6 - Ultra-Low-Power ARM Cortex-M4 MCU | STMicroelectronics
The STMicroelectronics STM32L452RET6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M4 core with FPU, operating at up to 80 MHz. It is part of the STM32L4 series, designed for high performance and low power consumption, making it ideal for battery-powered and energy-efficient applications. The device features 512 KB of Flash memory and 160 KB of SRAM, along with a rich set of peripherals including multiple USARTs, SPIs, I2Cs, USB, and advanced analog features. What is an ARM Cortex-M4 microcontroller? It is a 32-bit processor core designed for embedded systems, offering a balance of performance, power efficiency, and rich peripheral integration. The Cortex-M4 includes a floating-point unit (FPU) and DSP instructions, enabling efficient handling of complex mathematical operations. In the system hierarchy, a microcontroller (MCU) is a complete computer-on-a-chip, integrating CPU, memory, and peripherals, and is a subset of embedded processors, which are part of the broader semiconductor category. The STM32L4 series specifically targets low-power applications, extending battery life in portable and IoT devices. Key features of the STM32L452RET6 include its ultra-low-power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, and Shutdown), with current consumption as low as 28 µA in Stop 2 mode with RTC and 112 nA in Shutdown mode. It also features a 12-bit ADC with hardware oversampling, a 12-bit DAC, two comparators, and an operational amplifier. The device supports a wide supply voltage range of 1.71 V to 3.6 V, making it suitable for battery-powered designs. It also includes a true random number generator (TRNG), a CRC calculation unit, and a 96-bit unique ID. Technically, the STM32L452RET6 is built on a 40 nm process technology, enabling its low power consumption. It includes an advanced memory protection unit (MPU) and a secure access mode for enhanced security. The device supports external memory interfaces via FSMC for SRAM, PSRAM, NOR, and NAND memories. It also features a flexible power controller that allows dynamic voltage scaling to optimize power consumption based on processing load. Typical applications include industrial sensors, smart meters, healthcare devices, wearable electronics, and IoT endpoints. Its combination of low power, high performance, and rich analog peripherals makes it suitable for applications requiring precise analog measurements and long battery life. For example, in a smart meter, the STM32L452RET6 can handle metrology calculations while maintaining low power consumption for battery operation. When designing with this device, consider using the low-power modes effectively to maximize battery life. The Stop 2 mode with RTC is ideal for periodic wake-up applications. Also, ensure proper decoupling of the power supply pins and use the internal voltage regulator for optimal performance. The device supports a wide range of development tools, including STM32CubeMX and STM32CubeIDE, which simplify configuration and code generation.
STM32L452REY6TR - Ultra-low-power ARM Cortex-M4 MCU | STMicroelectronics
The STM32L452REY6TR is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M4 core with FPU. It operates at a maximum frequency of 80 MHz and delivers 100 DMIPS with 1.25 DMIPS/MHz, making it suitable for a wide range of battery-powered and energy-efficient applications. The device features 512 KB of Flash memory and 160 KB of SRAM, providing ample storage for complex firmware and data buffering. What is an ARM Cortex-M4 microcontroller? It is a 32-bit processor core designed for embedded systems, offering a balance of performance, power efficiency, and rich peripheral integration. The Cortex-M4 includes a floating-point unit (FPU) and DSP instructions, enabling efficient handling of mathematical and signal-processing tasks. In the system hierarchy, the STM32L452REY6TR sits at the application processor level, managing sensors, communication interfaces, and control loops, while interfacing with memory, power management, and external peripherals. Key features include an operating voltage range of 1.71V to 3.6V, multiple low-power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, and Shutdown) with current consumption as low as 28 µA in Stop 2 mode, and a rich set of peripherals including multiple USARTs, SPIs, I2Cs, USB 2.0 FS, CAN, and 12-bit ADCs/DACs. The device also integrates a true random number generator (TRNG), a CRC calculation unit, and a 12-channel DMA controller. The STM32L452REY6TR is built on ST's ultra-low-power technology, featuring a flexible power architecture with internal regulators and a low-power RTC. It supports a wide temperature range of -40°C to +85°C and is available in a 64-pin UFBGA package (Y6 suffix), which is ideal for space-constrained designs. The package measures 4.0 x 4.0 mm with a 0.5 mm pitch, offering excellent thermal performance and compactness. Typical applications include industrial sensors, smart meters, wearable devices, medical monitoring equipment, and IoT edge nodes. The combination of low power consumption, high performance, and extensive connectivity makes it a versatile choice for battery-operated systems that require advanced processing capabilities. When designing with this MCU, careful attention to power supply decoupling and PCB layout is essential to achieve the specified low-power performance. Use multiple decoupling capacitors close to the power pins and follow the layout guidelines in the datasheet to minimize noise and ensure reliable operation.
STM32L452VCT6 - Ultra-Low-Power ARM Cortex-M4 MCU | STMicroelectronics
The STM32L452VCT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M4 core with FPU. It operates at a maximum frequency of 80 MHz and delivers 100 DMIPS with 1.25 DMIPS/MHz, making it suitable for a wide range of battery-powered and energy-efficient applications. The device features 256 KB of Flash memory and 160 KB of SRAM, providing ample storage for complex firmware and data buffering. What is an ARM Cortex-M4 microcontroller? It is a 32-bit processor core designed for embedded systems, offering a balance of performance, power efficiency, and rich peripheral integration. The Cortex-M4 includes a floating-point unit (FPU) and DSP instructions, enabling efficient handling of mathematical and signal-processing tasks. In the system hierarchy, a microcontroller (MCU) integrates a processor core, memory, and programmable peripherals on a single chip, serving as the 'brain' of embedded systems. The STM32L4 series specifically targets ultra-low-power applications, extending battery life in portable and IoT devices. Key features of the STM32L452VCT6 include multiple low-power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, and Shutdown) with current consumption as low as 28 µA in Stop 2 mode with SRAM retention. It integrates a 12-bit ADC with 5 Msps, two 12-bit DACs, two comparators, and two operational amplifiers. Communication interfaces include I2C, SPI, USART, UART, LPUART, SAI, and CAN, along with USB 2.0 full-speed device/host/OTG. The device also features a true random number generator (TRNG), a CRC calculation unit, and a 96-bit unique ID. The STM32L452VCT6 is built on ST's ultra-low-power technology with an adaptive voltage scaling and a flexible power architecture. It includes a multi-speed internal RC oscillator (16 MHz) and a low-power internal oscillator (32 kHz), reducing external component count. The device supports external crystal oscillators for high-accuracy timing and includes a real-time clock (RTC) with calendar and alarm functions. The integrated LCD driver supports up to 8x40 segments, enabling direct connection to segment LCDs without external drivers. Typical applications include industrial sensors, smart meters, healthcare devices, wearable fitness trackers, and IoT edge nodes. Its ultra-low-power modes and rich analog peripherals make it ideal for battery-operated systems that require long operational life. The device also supports secure firmware updates with its read-out protection and memory protection unit, enhancing system security. When designing with the STM32L452VCT6, pay 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 VDD rail. Use the internal LDO or external SMPS step-down converter for optimal power efficiency. The VBAT pin should be connected to a backup battery or tied to VDD if not used. For low-power operation, configure unused GPIOs as analog inputs to minimize leakage current.
STM32L471RET6 - ARM Cortex-M4F 80MHz MCU | STMicroelectronics
The STMicroelectronics STM32L471RET6 is a high-performance ARM Cortex-M4F based microcontroller with floating-point unit (FPU) running at up to 80 MHz. It is part of the STM32L4 series, designed for ultra-low-power applications without compromising performance. The device integrates 512 KB of flash memory and 128 KB of SRAM, along with a rich set of peripherals including multiple 12-bit ADCs, DACs, comparators, op-amps, and advanced communication interfaces such as USART, SPI, I2C, CAN, and USB OTG FS. It is available in a 64-pin LQFP package (LQFP64) with a 10x10 mm body and 0.5 mm pitch. What is a microcontroller? A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory (flash and SRAM), and programmable input/output peripherals on a single chip. Microcontrollers are the brains of countless electronic devices, from automotive engine control units to wearable health monitors. In the system hierarchy, a microcontroller is a type of embedded processor, which falls under the broader category of integrated circuits (ICs) and semiconductors. The STM32L471RET6 is a mid-range MCU in the STM32L4 family, positioned between the lower-power STM32L0/L1 series and the higher-performance STM32F4 series, offering a balance of energy efficiency and processing capability. Key features of the STM32L471RET6 include its ultra-low-power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, and Shutdown) with current consumption as low as 100 nA in Shutdown mode. The device supports a wide supply voltage range of 1.71V to 3.6V, making it suitable for battery-powered applications. It also features a 12-bit ADC with hardware oversampling, a 12-bit DAC, and a true random number generator (TRNG). The FPU accelerates mathematical computations, which is beneficial for signal processing and control algorithms. The MCU is manufactured using ST's 90 nm process technology, enabling low dynamic power consumption. Technical depth: The STM32L471RET6 is built around the ARM Cortex-M4F core with DSP instructions and a single-precision FPU. It includes a memory protection unit (MPU) for enhanced security and reliability. The device supports up to 8x32-bit timers, including a low-power timer (LPTIM) that can operate in Stop mode. Communication peripherals include 3x USART, 3x SPI, 3x I2C, 1x CAN, 1x USB OTG FS, and 1x SAI (serial audio interface). The ADC has a resolution of 12 bits with up to 16 external channels and can operate at up to 5 Msps. The DAC has two channels with 12-bit resolution. The device also includes a flexible memory controller (FMC) for external memory expansion, supporting SRAM, PSRAM, NOR, and NAND flash. Typical applications include industrial sensors and actuators, smart meters, medical devices (e.g., glucose monitors, infusion pumps), wearable fitness trackers, IoT nodes, and portable instrumentation. The ultra-low-power modes and rich analog peripherals make it ideal for battery-operated devices that require long battery life and precise analog measurements. For example, in a smart meter, the STM32L471RET6 can handle metrology calculations, communication protocols, and display control while consuming minimal power in sleep mode between measurements. Design consideration: When designing with the STM32L471RET6, pay attention to the power supply decoupling. Place a 100 nF ceramic capacitor close to each VDD pin and a 4.7 uF capacitor at the main power input. For the VDDA pin, use a dedicated 1 uF capacitor to ensure stable analog performance. Also, configure the clock system carefully: the device can run from an internal 16 MHz HSI oscillator, but for precise timing, use an external 8 MHz crystal with appropriate load capacitors. The boot pins (BOOT0 and BOOT1) must be set correctly for the desired boot mode (flash, system memory, or SRAM).
STM32L475VGT6 - Ultra-Low-Power Cortex-M4 MCU 1MB Flash | STMicroelectronics
The STM32L475VGT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core with a floating-point unit (FPU) supporting single-precision arithmetic. It operates at a frequency of up to 80 MHz and provides 1 MB of Flash memory and 128 KB of SRAM, making it suitable for a wide range of battery-powered and energy-conscious applications. A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory, and programmable input/output peripherals on a single chip. The STM32L475VGT6 belongs to the STM32L4 series, which is part of the broader STM32 family of 32-bit microcontrollers. These devices are known for their ultra-low-power consumption, making them ideal for IoT devices, wearables, and other applications where energy efficiency is critical. Key features of the STM32L475VGT6 include a 32-bit Arm Cortex-M4 core with FPU, 80 MHz maximum clock speed, 1 MB of Flash memory, 128 KB of SRAM, and a rich set of peripherals such as USB OTG FS, DFSDM (digital filter for sigma-delta modulators), multiple 12-bit ADCs, DACs, timers, and communication interfaces (I2C, SPI, USART, CAN, SAI). The device also supports a wide supply voltage range from 1.71V to 3.6V and offers multiple low-power modes, including Sleep, Low-power run, and Standby, to minimize energy consumption. The STM32L475VGT6 is built on ST's ultra-low-power technology, which combines the efficiency of the Cortex-M4 core with advanced power management. The FPU accelerates mathematical computations, while the DSP instructions enhance signal processing capabilities. The device includes a memory protection unit (MPU) and a wide range of security features, such as a true random number generator (TRNG) and a CRC calculation unit, ensuring robust operation in safety-critical applications. Typical applications include smart meters, industrial sensors, medical devices, wearable fitness trackers, and IoT gateways. Its low-power consumption and high performance make it an excellent choice for battery-operated devices that require complex processing and connectivity. The device is available in a 100-pin LQFP package (14x14 mm), which is suitable for space-constrained designs. When designing with the STM32L475VGT6, it is essential to provide proper decoupling capacitors on the power supply pins and to follow the layout guidelines in the datasheet to ensure stable operation. The device supports in-circuit programming and debugging via SWD and JTAG interfaces, facilitating firmware development and testing.
STM32L476VGT6 - Ultra-Low-Power Cortex-M4 MCU 80MHz 1MB Flash | STMicroelectronics
The STM32L476VGT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core with floating-point unit (FPU). It operates at a frequency of up to 80 MHz, delivering 100 DMIPS performance while maintaining exceptional energy efficiency. The device features 1 Mbyte of Flash memory and 128 Kbytes of SRAM, making it suitable for a wide range of battery-powered and energy-conscious applications. 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. Microcontrollers are the brains of countless electronic devices, from automotive engine controllers to wearable health monitors. The STM32L476VGT6 belongs to the STM32L4 series, which is optimized for ultra-low-power operation without compromising performance, positioning it within the broader hierarchy of embedded processors and controllers. Key features of the STM32L476VGT6 include its 80 MHz Arm Cortex-M4 core with FPU, 1 MB Flash, 128 KB SRAM, and a rich set of peripherals such as USB OTG FS, LCD controller, and digital filters for sigma-delta modulators (DFSDM). It supports a wide supply voltage range from 1.71V to 3.6V, enabling direct battery operation. The device also integrates advanced low-power modes, including Sleep, Low-power Run, and Stop modes, with typical current consumption in the microamp range, extending battery life in portable applications. Technically, the STM32L476VGT6 leverages ST's proprietary ultra-low-power technology, featuring multiple power domains and dynamic voltage scaling. The FPU accelerates mathematical computations, beneficial for signal processing and control algorithms. The device includes a 12-bit ADC with hardware oversampling, multiple timers, and communication interfaces (I2C, SPI, USART, CAN, and USB). The LCD controller supports up to 8x40 segments, ideal for direct display driving without external components. Typical applications include smart meters, medical devices (e.g., glucose monitors, hearing aids), industrial sensors, and IoT edge nodes. Its ultra-low-power consumption and rich analog peripherals make it ideal for battery-operated devices that require long operational life. The 100-pin LQFP package (14x14 mm) offers a compact footprint with ample I/O for complex designs. When designing with this MCU, pay attention to the power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 uF bulk capacitor on the main supply. Also, utilize the low-power modes effectively by configuring the RTC and wakeup sources to minimize average current consumption.
STM32L486JGY6TR - Ultra-low-power ARM Cortex-M4F MCU | STMicroelectronics
The STM32L486JGY6TR is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M4F core with FPU, operating at up to 80 MHz. It is part of the STM32L4 series, designed for high efficiency and long battery life in a wide range of applications. The device integrates 1 Mbyte of Flash memory and 128 Kbytes of SRAM, along with a rich set of peripherals including analog, digital, and communication interfaces. What is an ARM Cortex-M4F microcontroller? It is a 32-bit processor core designed for embedded systems, featuring a floating-point unit (FPU) for efficient handling of mathematical operations, and a memory protection unit (MPU) for enhanced security. The Cortex-M4F is part of the ARM Cortex-M family, which includes the M0, M0+, M3, M4, and M7 cores, each offering different performance and power trade-offs. In the system hierarchy, a microcontroller (MCU) integrates a processor core, memory, and peripherals on a single chip, enabling it to control electronic systems in applications ranging from consumer electronics to industrial automation. Key features of the STM32L486JGY6TR include its ultra-low-power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, and Shutdown), which are critical for battery-powered devices. It also features a 12-bit ADC with hardware oversampling, a 12-bit DAC, two comparators, and operational amplifiers. The device supports multiple communication interfaces: I2C, SPI, USART, UART, LPUART, SAI, CAN, USB OTG FS, and SDMMC. Additionally, it includes a true random number generator (TRNG), a CRC calculation unit, and a 96-bit unique ID. The STM32L486JGY6TR is manufactured using ST's 40nm process technology, which contributes to its low power consumption. The core operates at 1.8V to 3.6V, with a wide temperature range of -40°C to +85°C. The device is available in a 73-ball WLCSP package (0.4mm pitch), making it suitable for space-constrained designs. The package is lead-free and RoHS compliant. Typical applications include wearable devices, smart sensors, medical monitoring equipment, industrial sensors, and IoT edge nodes. The ultra-low-power modes and rich analog peripherals make it ideal for battery-operated devices that require long operational life. For example, in a wearable health monitor, the STM32L486JGY6TR can sample sensor data, process it with the FPU, and communicate via BLE (through an external module) while consuming minimal power. When designing with this device, pay attention to the power supply decoupling: place a 100nF capacitor close to each VDD pin and a 1uF capacitor on the main supply. Also, use the low-power modes effectively by configuring the RTC and wake-up sources to maximize battery life. The device supports a wide range of development tools, including STM32CubeMX and STM32CubeIDE, which simplify configuration and code generation.
STM32L486RGT6 - ARM Cortex-M4F 80MHz MCU | STMicroelectronics
The STMicroelectronics STM32L486RGT6 is a high-performance, ultra-low-power ARM Cortex-M4F microcontroller with floating-point unit (FPU) and DSP instructions, operating at up to 80 MHz. It is part of the STM32L4 series, designed for applications requiring low power consumption without compromising performance. The device features 1 Mbyte of Flash memory and 128 Kbytes of SRAM, along with a rich set of peripherals including analog, digital, and communication interfaces. What is an ARM Cortex-M4F microcontroller? It is a 32-bit processor core from ARM Holdings that includes a floating-point unit (FPU) for hardware-accelerated single-precision math, and DSP instructions for signal processing. In the system hierarchy, it sits as the central processing unit (CPU) within a microcontroller (MCU), which integrates memory, peripherals, and I/O on a single chip. The Cortex-M4F is widely used in embedded systems where a balance of performance, power efficiency, and cost is required, such as in IoT devices, industrial control, and consumer electronics. Key features of the STM32L486RGT6 include: 1 Mbyte Flash, 128 Kbytes SRAM, 80 MHz CPU, ultra-low-power modes (down to 100 nA in shutdown), a 12-bit ADC with 5 Msps, a 12-bit DAC, multiple timers, and communication interfaces including USART, SPI, I2C, USB OTG FS, CAN, and SDMMC. It also integrates a hardware cryptographic accelerator (AES, DES, 3DES) and a true random number generator (TRNG) for security applications. The STM32L486RGT6 is built on ST's ultra-low-power technology, featuring multiple power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, Shutdown) that allow designers to optimize energy consumption. The device operates from 1.71V to 3.6V supply, making it suitable for battery-powered applications. Its advanced analog peripherals, including op-amps and comparators, enable sensor signal conditioning without external components. Typical applications include smart meters, medical devices, wearable fitness trackers, industrial sensors, and IoT edge nodes. The combination of low power, high performance, and security features makes it ideal for applications that require long battery life and secure data handling. When designing with this MCU, pay attention to the power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 uF bulk capacitor. For low-power modes, configure the clock source and voltage regulator appropriately to achieve the desired current consumption. The STM32L4 series offers a comprehensive set of development tools, including STM32CubeMX and STM32CubeIDE, which simplify configuration and code generation.