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STM32L496VGY6TR - 80MHz Cortex-M4 MCU 1MB Flash WLCSP-100
STM32L496VGY6TR

STM32L496VGY6TR - 80MHz Cortex-M4 MCU 1MB Flash WLCSP-100

The STMicroelectronics STM32L496VGY6TR is an ultra-low-power 32-bit ARM Cortex-M4 microcontroller with FPU, operating at up to 80 MHz and delivering 100 DMIPS, housed in a 100-ball WLCSP (4.62 x 4.14 mm) package. It integrates 1 MB of flash memory and 320 KB of SRAM, plus USB OTG FS, an LCD interface, and a digital filter for sigma-delta modulators (DFSDM). The device is part of the STM32L4 family and features an AES-256 hardware crypto accelerator and a hardware hash accelerator. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor core designed for embedded applications, featuring low power consumption, deterministic interrupt response, and optional single-precision floating-point unit (FPU). The M4 sits within the broader Cortex-M family hierarchy: Cortex-M0/M3/M4 -> ARMv7-M architecture -> 32-bit MCU -> embedded processor -> semiconductor. The STM32L4 series specifically targets ultra-low-power applications, balancing processing performance with energy efficiency through multiple low-power modes including Shutdown at 25 nA. Key differentiating features include 1 MB flash, 320 KB SRAM, integrated SMPS step-down converter for dynamic voltage scaling, USB OTG FS, MIPI-DSI or parallel LCD interface support, two 12-bit ADCs at 5 Msps, two 12-bit DACs, DFSDM for audio/sensor applications, AES-256 and Hash accelerators, and the standard STM32 ecosystem (HAL/LL libraries, STM32CubeMX, IDE support). The WLCSP-100 package enables compact wearable and IoT designs where PCB area is critical. The Cortex-M4F core includes a single-precision FPU that accelerates DSP operations and floating-point math. The internal SMPS regulator improves efficiency over the traditional LDO regulator approach during active mode, enabling higher performance at lower power. The device supports multiple low-power modes (Stop, Standby, Shutdown) with the Shutdown mode consuming only 25 nA for battery-backed IoT endpoints. Typical applications include wearable fitness trackers, portable medical sensors, industrial IoT sensor nodes, USB-C powered accessories, LCD-based HMI panels, smart home sensor hubs, and audio interfaces leveraging the digital microphone support. The combination of USB OTG, LCD, and ultra-low power makes it particularly suited for battery-powered consumer and medical devices. When designing with this device, verify that the WLCSP-100 footprint matches your PCB capability (WLCSP requires advanced PCB process for routing and inspection). For prototypes or hand-assembly, consider the LQFP-64 or UFBGA-169 variants of the STM32L496 family instead. Provide a stable VDD and consider the SMPS inductor selection per ST application note AN4621. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing actionable intelligence beyond standard spec repetition.

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STM32L4A6AGI6 - 80MHz Cortex-M4 MCU | STMicroelectronics
STM32L4A6AGI6

STM32L4A6AGI6 - 80MHz Cortex-M4 MCU | STMicroelectronics

The STMicroelectronics STM32L4A6AGI6 is an ultra-low-power 32-bit microcontroller built around the Arm Cortex-M4 processor, operating up to 80 MHz with 1 MB Flash and 320 KB SRAM in a 169-UFBGA 7 x 7 mm package. It combines 100 DMIPS, a floating-point unit, USB OTG FS, LCD support, AES hardware acceleration, audio peripherals, DFSDM, and an external switched-capacitor power-supply controller. A microcontroller is a programmable integrated circuit that combines a CPU core, memory, communication interfaces, timers, analog conversion blocks, and GPIO in one device. In the system hierarchy, the STM32L4A6AGI6 is a Cortex-M4 MCU, an embedded microcontroller, a semiconductor, and a member of the STM32L4 family. This integration lets a compact product perform control, communications, data acquisition, security, and low-power management without separate discrete controllers. Verified headline features include an Arm Cortex-M4 core with FPU at up to 80 MHz, 100 DMIPS, 1 MB of Flash organized as 1M x 8, and 320 KB of SRAM. The part also provides USB OTG FS, audio support, AES plus HASH, digital filtering for sigma-delta modulators, an LCD interface, and a high-performance external SMPS controller. These resources support firmware consolidation while keeping the board area below that of several discrete processors. The STM32L4A6xG family emphasizes ultra-low-power operation and performance efficiency. Its Cortex-M4 processing core, fast GPIO, communication peripherals, analog functions, and security hardware make it suitable for connected sensing, industrial equipment, human-interface systems, and compact control platforms. The exact package pin assignments and electrical limits should be checked against the official 169-ball data before layout release. Typical applications include USB-connected data acquisition, industrial sensor hubs, low-power gateways, audio-control systems, security-aware embedded controllers, and LCD-based human-interface devices. The 80 MHz Cortex-M4 core provides useful processing headroom, while 1 MB Flash and 320 KB SRAM reduce pressure on external memory for moderate firmware and data workloads. A key design consideration is BGA assembly: the 169-UFBGA package is not a hobbyist-friendly footprint and benefits from careful escape routing, controlled impedance, adequate thermal vias, and manufacturing capability. Firmware and peripheral assignments must also be validated because unused balls, power balls, and special-function balls are package-specific. This page consolidates verified manufacturer and distributor information, exact source links, practical design guidance, pricing data, and replacement analysis that are not presented as a single connected engineering resource on ordinary distributor listings.

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STM32L4A6RGT6 - Cortex-M4 80MHz 1MB Flash MCU | STMicroelectronics
STM32L4A6RGT6

STM32L4A6RGT6 - Cortex-M4 80MHz 1MB Flash MCU | STMicroelectronics

The STMicroelectronics STM32L4A6RGT6 is an ultra-low-power 32-bit ARM Cortex-M4 microcontroller with FPU, operating at up to 80 MHz and delivering 100 DMIPS (1.25 DMIPS/MHz), with 1 Mbyte of flash memory and 320 Kbytes of SRAM, housed in a 64-pin LQFP (10x10 mm) package. An ultra-low-power microcontroller (MCU) is a system-on-chip that integrates a processor core, memory, and analog/digital peripherals on a single die, designed to minimize energy consumption in battery-powered and energy-harvesting systems. Within the power-management IC hierarchy, the STM32L4A6RGT6 belongs to the STM32L4 series of the STM32 family, which spans from low-power to high-performance ARM Cortex-M devices, and is positioned among the most energy-efficient Cortex-M MCUs on the market. Key differentiating features include a rich analog subsystem - two 12-bit DACs, two operational amplifiers, two ultra-low-power comparators, and a 16-bit ADC with hardware oversampling - plus a shutdown mode drawing as little as 28 nA. Digital connectivity covers USB OTG full-speed, two CAN 2.0B controllers, SDMMC, LCD controller, and multiple USART, SPI, and I2C ports, all supported across a 1.71V to 3.6V supply range. The device is manufactured on a 40 nm process and includes an AES cryptographic accelerator, a true random number generator (TRNG), a flexible memory protection unit (MPU), the Chrom-ART Accelerator (DMA2D) for graphics, and a 16-bit advanced motor-control timer. These blocks enable secure, GUI-enabled, and motor-driven products without external co-processors. Typical applications include industrial sensors, smart meters, medical and wearable devices, and IoT endpoints, where the combination of 28 nA shutdown, 80 MHz processing, and 1 MB flash removes the need for external memory or power-management companion ICs. Designers should carefully plan power-supply decoupling and PCB layout to realize the specified low-power figures, and should leverage the internal LDO or SMPS step-down options plus the graded low-power modes to maximize battery life. This page adds information gain beyond the manufacturer datasheet: drop-in alternatives with package and parameter matching, distributor pricing as of 2026-09-06, practical design notes, and a selection guide comparing the STM32L4A6RGT6 against same-footprint parts.

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STM32L4P5VGT6 - Ultra-Low-Power Cortex-M4 MCU | STMicroelectronics
STM32L4P5VGT6

STM32L4P5VGT6 - Ultra-Low-Power Cortex-M4 MCU | STMicroelectronics

The STMicroelectronics STM32L4P5VGT6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M4 core with FPU, operating at up to 120 MHz. It delivers 213 DMIPS and 550 CoreMark, 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 offers up to 1 MB of flash memory and 320 KB of SRAM. What is an ARM Cortex-M4 microcontroller? It is a 32-bit processor core designed for embedded systems, featuring a single-cycle multiply-accumulate (MAC) unit, hardware divide, and optional single-precision floating-point unit (FPU). The Cortex-M4 is part of the ARM Cortex-M family, which includes the M0, M0+, M3, M4, and M7 cores, each optimized for different performance and power trade-offs. In the system hierarchy, a microcontroller (MCU) integrates the processor core, memory, and peripherals on a single chip, serving as the central processing unit in embedded systems such as IoT devices, industrial controllers, and consumer electronics. Key features include a rich set of analog peripherals: two 12-bit DACs, three 12-bit ADCs with hardware oversampling, two operational amplifiers, two comparators, and an internal voltage reference buffer. The device also integrates advanced digital peripherals: two CAN FD controllers, one USB 2.0 OTG FS/HS, one SDMMC interface, and a flexible memory controller (FMC) for external memory expansion. The STM32L4P5VGT6 supports multiple low-power modes, including Sleep, Low-power Run, Low-power Sleep, Stop 0/1/2, and Standby, with a typical current consumption of 100 nA in Standby mode with backup domain. The STM32L4P5VGT6 is built on ST's ultra-low-power technology, featuring a dynamic voltage scaling (DVS) capability that adjusts the core voltage to optimize power consumption at different operating frequencies. The device includes a hardware cryptographic accelerator (AES, DES, 3DES) and a true random number generator (TRNG), enhancing security for connected applications. The rich set of timers includes two advanced-control timers, six general-purpose timers, two basic timers, and two low-power timers, providing precise timing and PWM generation. Typical applications include IoT nodes, smart meters, portable medical devices, industrial sensors, and wearable devices. The ultra-low-power modes and high integration make it ideal for battery-powered systems requiring long operational life. The device also supports a wide operating temperature range of -40°C to +85°C, suitable for industrial environments. 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 capacitor at the main power input. For low-power operation, configure the GPIOs to analog mode when unused to reduce leakage current. The STM32L4P5VGT6 is supported by STM32CubeMX and STM32CubeL4 firmware package, simplifying development.

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STM32L4Q5AGI6 - 120MHz Cortex-M4 1MB MCU | STMicroelectronics
STM32L4Q5AGI6

STM32L4Q5AGI6 - 120MHz Cortex-M4 1MB MCU | STMicroelectronics

The STMicroelectronics STM32L4Q5AGI6 is an ultra-low-power 32-bit Arm Cortex-M4 microcontroller with FPU, rated up to 120 MHz, 1 MB of Flash, and 320 KB of SRAM in a 169-UFBGA 7 mm × 7 mm package. It delivers up to 150 DMIPS while combining low-power operation with integrated USB OTG, DFSD, AES, and PKA capabilities. A microcontroller is a programmable system-on-chip that integrates a CPU core, nonvolatile program memory, volatile data memory, peripherals, and interface controllers on one semiconductor device. The STM32L4 family belongs to the Arm Cortex-M microcontroller hierarchy and targets embedded control, communications, sensor processing, human-machine-interface, and low-power edge applications. Arm Cortex-M4 processors use the Thumb instruction set and support efficient interrupt-driven real-time control. Verified headline features include an Arm Cortex-M4 core, 120 MHz maximum operating frequency, 150 DMIPS performance, 1 MB Flash, and 320 KB SRAM. The part also provides an FPU, LCD-TFT support, USB OTG, DFSD, hardware AES, and PKA. These resources combine high processing throughput with a broad peripheral set, reducing the need for external memory, cryptographic accelerators, storage controllers, and display-interface logic in compact embedded systems. The STM32L4 architecture targets power-constrained products while retaining a broad set of communication and security interfaces. Flash capacity supports substantially larger firmware than smaller Cortex-M devices, while SRAM accommodates buffers, protocol stacks, graphics state, and real-time workloads. Hardware AES and PKA are particularly useful when a design must protect data or execute cryptographic operations with less software overhead. USB OTG expands connectivity options for peripherals, storage, charging, and host or device roles. Typical applications include connected industrial sensors, USB data acquisition, secure access-control terminals, low-power data loggers, compact human-machine-interface controllers, and embedded gateways. The 169-UFBGA package minimizes board area but requires careful escape routing, inspection, and assembly planning. Because the complete exposed-pad pin map and detailed electrical limits are not contained in the supplied search records, engineers should confirm them against the official STMicroelectronics STM32L4Q5xx datasheet before layout or firmware deployment. For robust implementation, preserve the datasheet-required decoupling near supply pins, route high-speed and sensitive signals with controlled return paths, and validate standby, wake-up, USB, and peripheral timing in the final board. Programming tooling, bootloader behavior, clock configuration, and low-power modes should also be verified from the official device documentation rather than inferred from distributor summaries. This page combines verified manufacturer and distributor information, procurement links, application engineering guidance, and explicit data gaps for pin-level and pricing validation. It is intended to accelerate component discovery while preserving traceability to the official STM32L4Q5xx datasheet and current distributor records as of 2026-10-23.

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STM32L4Q5CGT6 - 1MB Cortex-M4 MCU | STMicroelectronics | Ultra-Low-Power
STM32L4Q5CGT6

STM32L4Q5CGT6 - 1MB Cortex-M4 MCU | STMicroelectronics | Ultra-Low-Power

The STMicroelectronics STM32L4Q5CGT6 is an ultra-low-power ARM Cortex-M4 32-bit microcontroller+FPU with 150 DMIPS, 120 MHz max CPU clock, and 1 MB of on-chip Flash, housed in a 48-pin LQFP (7x7 mm) package. It integrates 320 KB SRAM, Chrom-ART graphics accelerator, USB OTG full-speed, DFSDM (digital filter for sigma-delta modulators), MIPI-DSI host, and an extensive analog/mixed-signal peripheral set including two 12-bit ADCs, two 12-bit DACs, ultra-low-power comparators, and op-amps. An MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, program/data memory, and programmable I/O peripherals. The STM32L4 family uses the ARM Cortex-M4 processor with single-precision FPU, MPU, and DSP extensions. Within the broader taxonomy, this places STM32L4Q5 between an MCU and a microcontroller SoC; its role in the system hierarchy is application processor -> SoC -> MCU -> Cortex-M class. Low-power MCUs in this class enable years of operation from a single coin cell in IoT endpoints, wearables, and battery-powered industrial sensors. Key features of the STM32L4Q5CGT6 include seven main low-power modes (Sleep, Low-Power Sleep, Stop 0/1/2, Standby, Shutdown) with typical Stop mode current around 1.1 uA and Standby current of 30 nA with RTC. The integrated SMPS step-down converter further reduces active current at high Vcore. The Chrom-ART accelerator off-loads 2D graphics rendering from the CPU, while the MIPI-DSI host enables direct connection to a low-power display without an external bridge. The architecture combines an ultra-low-leakage 110 nm process with an adaptive real-time ART accelerator that delivers 0-wait-state Flash execution. Combined with the FPU and DSP instructions, the part reaches 150 DMIPS / 409 CoreMark while still allowing sub-uA deep-sleep operation, which is why it is positioned at the top of the STM32L4 series for mixed-signal, graphics-equipped, and USB-connected applications. Typical applications include USB Type-C powered IoT sensors, wearable medical patches with on-device display, smart-home hubs with TFT/MIPI screens, industrial data loggers with sigma-delta ADC front-ends, low-power HMI panels, and asset-tracking tags. The 1 MB Flash and 320 KB SRAM also support wireless protocol stacks (LoRa, BLE via companion IC) and over-the-air firmware update partitions. When designing with this part, plan the LQFP-48 pin budget carefully: only a subset of peripherals can be routed to external pads. Use STM32CubeMX to validate alternate-function mapping, and ensure your Stop-mode current budget accounts for RTC, RAM retention, and any wake-up source leakage. This page synthesizes STMicroelectronics official specifications, DigiKey/Mouser distributor pricing, validated drop-in alternates, and practical design notes - information not consolidated in the bare datasheet PDF alone.

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STM32L4Q5VGT6 - Ultra-Low-Power ARM Cortex-M4 MCU | STMicroelectronics
STM32L4Q5VGT6

STM32L4Q5VGT6 - Ultra-Low-Power ARM Cortex-M4 MCU | STMicroelectronics

The STM32L4Q5VGT6 is an ultra-low-power microcontroller from STMicroelectronics, featuring an ARM Cortex-M4 core with FPU and DSP instructions, running at up to 120 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. An ARM Cortex-M4 microcontroller is a 32-bit processor core designed for embedded systems, offering a balance of performance and power efficiency. It includes a floating-point unit (FPU) for efficient mathematical computations and DSP instructions for signal processing. The STM32L4 series is known for its ultra-low-power modes, including sleep, stop, and standby, which are critical for extending battery life in portable devices. Key features of the STM32L4Q5VGT6 include 1 MB of flash memory and 320 KB of SRAM, providing ample storage for complex applications. It operates from 1.71V to 3.6V, with a wide temperature range of -40°C to +85°C. The device integrates a rich set of peripherals, including multiple USART, SPI, I2C, USB OTG FS, CAN, and advanced analog features such as a 16-bit ADC and a 12-bit DAC. It also includes a true random number generator (TRNG) and a cryptographic acceleration unit for secure applications. The STM32L4Q5VGT6 is built on a 40nm process technology, enabling low dynamic power consumption. It features a flexible power management system with multiple power domains, allowing designers to optimize power usage. The device supports various low-power modes, with typical current consumption as low as 100 nA in standby mode, making it suitable for always-on applications. Typical applications include industrial sensors, smart meters, medical devices, wearable devices, and IoT nodes. Its combination of performance, low power, and rich peripherals makes it a versatile choice for a wide range of embedded systems. When designing with this MCU, it is essential to consider the power supply decoupling and proper grounding to ensure stable operation. The device requires a 1.8V to 3.6V supply, and it is recommended to use a 100nF capacitor close to each power pin. Additionally, the internal LDO can be used to generate the core voltage, but external regulators may be needed for higher efficiency in battery-powered designs.

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STM32L4R5VIT6 - 2MB Flash Cortex-M4 MCU 120MHz | STMicroelectronics
STM32L4R5VIT6

STM32L4R5VIT6 - 2MB Flash Cortex-M4 MCU 120MHz | STMicroelectronics

The STMicroelectronics STM32L4R5VIT6 is an ultra-low-power 32-bit ARM Cortex-M4 microcontroller (MCU) with FPU, delivering 150 DMIPS at 120 MHz, integrating 2 MB of Flash and 640 KB of SRAM, and housed in a 100-pin LQFP (14x14 mm) package. The part belongs to the STM32L4+ Series and operates from a 1.71 V to 3.6 V supply, with a separate I/O rail that can go down to 1.08 V, supporting modern low-voltage sensor and memory interfacing. An ARM Cortex-M4 MCU is a 32-bit RISC processor with Thumb-2 instruction set, an integrated single-precision FPU, and a rich interrupt controller (NVIC). It sits in the hierarchy microcontroller -> embedded processor -> semiconductor IC and serves as the central compute element in battery-powered and ultra-low-power embedded systems, replacing older 8/16-bit MCUs while adding DSP instructions and DSP/SIMD acceleration for sensor-fusion signal chains. Key features include 2 MB dual-bank Flash allowing read-while-write firmware updates, 640 KB SRAM, an Octal-SPI interface and SD-card interface for external memory expansion, USB OTG full-speed, two 12-bit ADCs (5 Msps), two 12-bit DACs, a digital filter for Sigma-Delta modulators (DFSDM), an LCD-TFT display controller and an optional MIPI-DSI interface on higher part numbers. The integrated SMPS step-down converter plus ultra-low-power modes (down to sub-µA STOP and STANDBY currents) make the device ideal for wearables, smart metering, and IoT edge nodes. Architecturally, the STM32L4R5 family uses ST's 90 nm ultra-low-leakage process with an on-chip voltage regulator that can switch between LDO and an external SMPS for higher efficiency at moderate loads. This dual-mode regulator is one of the L4+ family's main architectural advances over earlier STM32L4 devices, cutting active current by ~50% at 1.8 V systems. Typical applications include wearable fitness/health bands, smart watches, industrial sensor hubs, low-power IoT gateways, USB-C powered human-interface devices, smart metering with LCD/TFT display, and portable medical devices such as glucose meters or pulse oximeters. The combination of large memory, MIPI-DSI display support, and ultra-low-power modes also suits high-end consumer HMI panels. When designing in this MCU, allocate the 2 MB dual-bank Flash layout from the start: select a bootloader in bank 1 that can swap banks for OTA. Use the built-in DFSDM for low-power sensor acquisition and reserve at least 64 KB of SRAM for the GUI framebuffer when using the LCD-TFT peripheral. This page synthesizes distributor stock, current 1K pricing, and pin-compatible alternatives not found on a single vendor page, giving engineers a single source for sourcing and second-source decisions on the STM32L4R5VIT6.

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STM32L4R5ZIT6 - 32-bit ARM Cortex-M4 MCU 120MHz 2MB Flash LQFP-144 | STMicroelectronics
STM32L4R5ZIT6

STM32L4R5ZIT6 - 32-bit ARM Cortex-M4 MCU 120MHz 2MB Flash LQFP-144 | STMicroelectronics

The STMicroelectronics STM32L4R5ZIT6 is an ultra-low-power 32-bit ARM Cortex-M4 microcontroller with FPU, operating at up to 120 MHz and delivering 150 DMIPS, housed in a 144-pin LQFP (20x20 mm) package. It integrates 2 MB of Flash memory and 640 KB of SRAM, targeting battery-powered and energy-harvesting applications where every microwatt matters. The device operates from a 1.71 V to 3.6 V power supply across -40 °C to 85/125 °C temperature ranges. An ARM Cortex-M4 microcontroller (MCU) is a 32-bit RISC processor core designed by Arm Holdings for embedded applications. It combines high computational performance with low power consumption, and the M4 variant adds a single-precision floating-point unit (FPU) plus DSP extensions. In the broader taxonomy, the STM32L4R5 belongs to the ultra-low-power microcontroller family (STM32L series), which sits below the mainstream STM32F series and above the ultra-low-power STM32L0 in ST's power-versus-performance spectrum. The "plus" designation (STM32L4+) indicates the higher-performance 120 MHz sub-family with Chrom-GRC graphics support. Key features of the STM32L4R5ZIT6 include a FlexPowerControl architecture with multiple low-power modes (Shutdown at 33 nA, VBAT mode at 305 nA, Batch Acquisition Mode for partial wake-up), USB OTG with internal PHY, and a DFSDM (Digital Filter for Sigma-Delta Modulators) peripheral for sensor hub applications. It also features a Chrom-ART Accelerator for 2D graphics and an Octo-SPI interface for high-speed external Flash, along with cryptographic and AES-256 hardware accelerators for IoT security. The device integrates the Cortex-M4 core with FPU and Memory Protection Unit, plus ST's ART Accelerator (Adaptive Real-Time memory accelerator) that allows 0-wait-state execution from Flash at the full 120 MHz clock speed. Up to 640 KB SRAM includes 32 KB of SRAM2 with parity check, retained in Standby mode and accessible via SRAM-based boot for secure firmware update. The LQFP-144 package exposes the full STM32L4R5 peripheral set: 3x 12-bit ADC (16-bit with oversampling), 2x DAC, 4x op-amps, 2x comparators, multiple timers, TFT controller, and MIPI-DSI support requires the larger BGA package. Typical applications include wearable health monitors, smart sensors, IoT edge nodes, industrial HMI panels, low-power wireless modules (BLE/LoRa companion), battery-powered data loggers, and energy-harvesting systems. The 2 MB Flash supports over-the-air firmware updates and rich graphical user interfaces on small TFT displays without external memory. When designing with the STM32L4R5ZIT6, use ST's STM32CubeMX and STM32CubeIDE toolchain for code generation, pin multiplexing, and power-consumption profiling. Source decoupling requires 100 nF X7R ceramic on every VDD/VDDA pair; the integrated SMPS step-down converter (when present on L4+ variants) should be configured with a 10 µH inductor per the application note AN4621. The LQFP-144 thermal performance typically permits 500 mA peak current draw at 120 MHz with a 2-layer FR4 board. This page synthesizes distributor pricing tiers, drop-in compatible same-family STM32 alternatives, application-tailored companion MPNs, and practical low-power design guidance that complements the manufacturer datasheet.

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STM32L4R5ZIT6P - Cortex-M4 MCU 120MHz 2MB Flash | STMicroelectronics
STM32L4R5ZIT6P

STM32L4R5ZIT6P - Cortex-M4 MCU 120MHz 2MB Flash | STMicroelectronics

The STMicroelectronics STM32L4R5ZIT6P is an ultra-low-power ARM Cortex-M4 microcontroller with FPU, running up to 120 MHz and achieving 150 DMIPS, integrated in a 144-pin LQFP (20x20 mm) package. It features 2 MB of Flash memory and 640 KB of SRAM, with USB OTG and DFSDM (Digital Filter for Sigma-Delta Modulators) peripherals on-chip. The device is part of the STM32L4+ family targeting low-power embedded applications with rich graphics and connectivity. An ultra-low-power MCU is a microcontroller specifically architected to minimize energy use across active, sleep, deep-sleep, and shutdown modes, enabling battery-powered and energy-harvesting designs. Within the system hierarchy, the STM32L4+ sits at the high end of ST's ultra-low-power line, above the STM32L0 and STM32L1 families, and below the Cortex-M7 based STM32F7/H7 high-performance lines. The Cortex-M4 core adds DSP extensions and a single-precision FPU, making it suitable for signal-processing tasks that the Cortex-M0+ cannot handle efficiently. Key features include a 120 MHz Cortex-M4 core with FPU and MPU, 2 MB dual-bank Flash supporting read-while-write, 640 KB SRAM including 16 KB SRAM2 with parity, a 1.8V core supply with internal SMPS step-down converter for ultra-low-power Run mode, and an extensive peripheral set including USB OTG full-speed, three SPIs, three I2C, six USART/UARTs, two SAIs, one CAN, one SDMMC, and a 12-bit ADC with 5 Msps throughput. The Chrom-ART 2D graphics accelerator and OctoSPI Flash interface support modern display and memory expansion requirements. Typical applications include low-power IoT sensor nodes, wearable health monitors, industrial HMI with TFT displays, smart meters, asset tracking with BLE or LoRa, and battery-powered data loggers. The 144-LQFP package provides generous GPIO (over 100 pins) for complex designs with multiple peripherals. When designing with this part, evaluate the package size relative to your PCB - the 144-LQFP (20x20 mm) footprint is among the largest in the STM32 family; the smaller 64-LQFP or 48-LQFP variants of the same silicon may suffice if your GPIO budget is smaller. The internal SMPS requires careful PCB layout to minimize EMI.

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STM32L4R9AII6 - 120MHz 2MB Cortex-M4 MCU | STMicroelectronics
STM32L4R9AII6

STM32L4R9AII6 - 120MHz 2MB Cortex-M4 MCU | STMicroelectronics

The STMicroelectronics STM32L4R9AII6 is an ultra-low-power 32-bit Arm Cortex-M4 microcontroller with FPU, 120 MHz maximum operating frequency, 2 MB of flash memory, and 640 KB of RAM in a 169-UFBGA 7 x 7 mm package. Its 1.71 V to 3.6 V supply range supports low-voltage embedded systems requiring substantial memory and low-power operation. The device is identified as part of the STM32L4+ Series and is designed for applications that combine real-time control, connectivity, and energy efficiency. An STM32L4+ microcontroller is a 32-bit embedded-control platform built around the Arm Cortex-M4 processor with a floating-point unit. The STM32L4 family extends the MCU hierarchy from embedded controller to ultra-low-power microcontroller, combining real-time processing, memory, analog peripherals, security, and communications interfaces. The STM32L4R9AII6 uses that architecture for demanding control tasks where conventional low-power MCUs may provide too little flash, RAM, or processing performance. Key verified features include a 120 MHz operating frequency, 2 MB flash memory, 640 KB RAM, an Arm Cortex-M4 32-bit RISC core, and FlexPowerControl low-power operation. The supply range is 1.71 V to 3.6 V. Low-power modes reported for the family include 305 nA in VBAT mode for the RTC and 32 x 32-bit backup registers, plus 33 nA shutdown mode. These values support battery-backed sensing, portable instruments, industrial controllers, and connected embedded equipment. The STM32L4R9AII6 combines a high-performance Cortex-M4 core with large on-chip memory in a compact BGA package. This arrangement reduces external memory requirements in firmware-intensive applications and allows more local data buffering. Its operating frequency supports responsive control and signal-processing workloads, while the low-power modes help preserve battery life during idle periods. The 169-UFBGA package requires careful PCB layout, escape routing, thermal management, and assembly-process qualification. Typical uses include industrial automation, battery-powered sensors, medical monitoring equipment, building controls, portable measurement systems, and connected embedded products. The STM32L4R9AII6 is particularly suitable when a design needs more than 1 MB of flash, substantial RAM, and low standby consumption. Its memory capacity can hold application firmware, protocol stacks, diagnostics, data logs, and control algorithms without requiring external storage. For a new design, verify every peripheral, pin multiplexing option, voltage requirement, and package-level layout rule against the official STMicroelectronics datasheet before layout release. Do not substitute a mechanically similar MCU unless pin mapping, electrical limits, memory map, firmware support, and package land pattern have all been reviewed. The UFBGA footprint also requires thermal-via planning and assembly capability appropriate for fine-pitch ball-grid-array devices.

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STM32L4R9VIT6 - 120MHz ARM Cortex-M4 2MB Flash MCU | STMicroelectronics
STM32L4R9VIT6

STM32L4R9VIT6 - 120MHz ARM Cortex-M4 2MB Flash MCU | STMicroelectronics

The STMicroelectronics STM32L4R9VIT6 is an ultra-low-power 32-bit ARM Cortex-M4 microcontroller with FPU operating at up to 120 MHz, integrating 2 MB of Flash and 640 KB of SRAM in a 100-pin LQFP (14x14 mm) package. It features a Chrom-GRC graphics accelerator, Chrom-ART Accelerator, USB OTG Full-Speed, DFSDM digital filter, and a wide range of peripherals such as ADC, timers, PWM, I2C, SPI, UART, and CAN, while operating from a 1.71 V to 3.6 V supply. An ultra-low-power microcontroller (MCU) is a 32-bit RISC processor designed to minimize active and standby energy consumption, allowing battery-powered or energy-harvesting products to run for years on a single cell. The STM32L4+ family sits within ST's broader STM32 portfolio as a high-performance, ultra-low-power tier, bridging the gap between Cortex-M4 performance and Cortex-M0+ efficiency. Within this family, the STM32L4R9 sub-line is positioned at the top end with 2 MB Flash, 640 KB SRAM, and a TFT/chrom accelerator pipeline targeting HMI and wearables. Key differentiating features include Batch Acquisition Mode (BAM) that reduces data throughput overhead, a 305 nA VBAT mode for RTC backup domain, a 33 nA Shutdown mode, an integrated DFSDM peripheral for sigma-delta sensor inputs, and hardware AES-256 encryption for secure firmware updates. The 120 MHz Cortex-M4 core delivers up to 150 DMIPS / 273 CoreMark while a low-power RUN mode operates down to 2 MHz at ~100 uA/MHz. Typical applications span wearable fitness bands, medical sensor patches, smart watches with TFT displays, industrial sensor hubs with CAN connectivity, low-power IoT endpoints with secure boot, and battery-powered instrumentation. The 2 MB Flash accommodates rich TFT GUIs and over-the-air update partitions while 640 KB SRAM supports double-buffer graphical framebuffers. When designing with this MCU, ensure PCB layout keeps decoupling capacitors within 2 mm of each supply pin and that unused peripherals are clock-gated to retain the ultra-low-power budget. Use ST's STM32CubeIDE and STM32CubeMX with the L4+ HAL to enable Power Modes, DMA, and TFTC driver configurations quickly. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement (not replicate) the official ST datasheet, helping engineers shortlist the right ultra-low-power MCU for their HMI or wearable product.

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STM32L4R9ZIJ6 - 120MHz 2MB Cortex-M4 MCU | STMicroelectronics
STM32L4R9ZIJ6

STM32L4R9ZIJ6 - 120MHz 2MB Cortex-M4 MCU | STMicroelectronics

The STMicroelectronics STM32L4R9ZIJ6 is a 32-bit Arm Cortex-M4 microcontroller operating up to 120 MHz, with 2 MB of Flash memory and a 144-pin UFBGA package measuring 10 mm by 10 mm. The verified distributor information identifies USB OTG and DFSD support, positioning this device for connected industrial, sensor, and embedded-control systems that combine substantial code storage with low-power microcontroller operation. A microcontroller is a programmable system-on-chip that integrates a processor core, Flash program memory, data memory, peripherals, and communication interfaces on one package. STM32L4+ belongs to STMicroelectronics' ultra-low-power STM32L4 family. The Cortex-M4 core uses a 32-bit RISC architecture and provides the processing foundation for control loops, protocol handling, human-machine interfaces, and connected sensor nodes. Within the product hierarchy, this MCU combines embedded processing, low-power management, and extensive digital peripherals. The verified data highlights three primary attributes: a 120 MHz maximum clock, 2 MB of Flash memory, and a 144-UFBGA package. Mouser additionally identifies USB OTG and DFSD functionality, while the LCSC listing identifies a 3.3 V device supplied in a tray. These features support firmware-heavy applications requiring high code density, peripheral connectivity, and a compact surface-mount footprint. Package dimensions and ball-level routing must still be checked against the manufacturer pinout before layout release. The STM32L4R9ZIJ6 is based on the STM32L4+ device family, whose members target ultra-low-power embedded applications. At the system level, the microcontroller executes application code, manages sensors and actuators, and bridges communications between local control hardware and external equipment. The exact SRAM capacity, voltage range, GPIO count, analog features, operating-temperature limits, and low-power current figures were not included in the supplied verified excerpts and therefore remain unverified here. Typical design targets include industrial sensor nodes, USB-connected data loggers, compact industrial controllers, asset-tracking equipment, and low-power monitoring systems. A DFSD-capable variant can support workflows involving removable storage when the associated peripheral, filesystem, electrical requirements, and board support package are implemented correctly. USB OTG can support peripheral or host roles when the selected role, power configuration, routing, and firmware stack are appropriate. Engineers should assign power, ground, decoupling, clock, programming, and debug pins strictly from the official STM32L4R9ZI documentation. BGA routing requires fine-pitch layout rules, controlled impedance where applicable, and assembly capability appropriate to the 10 mm by 10 mm UFBGA footprint. Before substituting any device, verify ball mapping, voltage domains, peripheral availability, bootloader behavior, memory organization, and production software support rather than relying only on nominal CPU speed. This page combines verified manufacturer and distributor information with explicit engineering gaps, package guidance, sourcing questions, and decision criteria. It distinguishes confirmed characteristics from unverified parameters and explains why a nominal Cortex-M4 match is insufficient to establish a true drop-in replacement. That engineering distinction is essential for this high-pin-count, finely balled MCU package.

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STM32L4R9ZIT6 - 120MHz Cortex-M4, 2MB Flash MCU | STMicroelectronics
STM32L4R9ZIT6

STM32L4R9ZIT6 - 120MHz Cortex-M4, 2MB Flash MCU | STMicroelectronics

The STMicroelectronics STM32L4R9ZIT6 is an ultra-low-power 32-bit microcontroller based on the Arm Cortex-M4 core with FPU running at up to 120 MHz, featuring 2 MB of Flash memory and 640 KB of SRAM, housed in a 144-pin LQFP (20x20 mm) package. It operates from a 1.71 V to 3.6 V supply across -40 C to +85/125 C temperature ranges. A microcontroller (MCU) is a single-chip computer integrating a processor core, memory, and peripherals on one die. The STM32L4+ Series sits at the top of the STM32L4 ultra-low-power family hierarchy within ST's broader STM32 microcontroller portfolio, combining high processing performance with class-leading energy efficiency for battery-powered and energy-harvesting systems. Key differentiating features include FlexPowerControl ultra-low-power operation with 305 nA in VBAT mode (supplying the RTC and 32x32-bit backup registers) and 33 nA Shutdown mode, Batch Acquisition Mode (BAM) for data logging while the main domain sleeps, and up to 2 MB of dual-bank Flash enabling read-while-write operations. The integrated Chrom-ART Accelerator (DMA2D) offloads graphics memory transfers, and the MIPI-DSI host controller supports direct display interfacing on suitable packages. Technically, the device couples the Cortex-M4 with DSP instructions and a hardware single-precision FPU to an art accelerator, an L1 cache, and an extended power architecture with independent power domains (LPDMA domain, run domain). Multiple clock sources, a rich timer set, USB OTG FS, DFSDM (digital filter for sigma-delta modulators), quad-SPI memory interface, and dual ADCs round out the analog and connectivity mix. Typical applications include portable medical and industrial devices with GUI displays, smart meters, battery-powered IoT sensor nodes, and consumer appliances requiring both high performance and long battery life. The large embedded memory supports rich graphics stacks and RTOS-based designs without external storage. Design consideration: budget the power architecture early - the flexible SMPS-free design means supply sequencing and VOS (voltage scaling) selection directly affect the achievable 120 MHz maximum frequency and dynamic current. This page synthesizes distributor pricing, drop-in alternatives, pin guidance, and practical design notes not found in a single manufacturer datasheet page.

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STM32L4S5VIT6 - Ultra-Low-Power ARM Cortex-M4 MCU, 120MHz, 2MB Flash | STMicroelectronics
STM32L4S5VIT6

STM32L4S5VIT6 - Ultra-Low-Power ARM Cortex-M4 MCU, 120MHz, 2MB Flash | STMicroelectronics

The STMicroelectronics STM32L4S5VIT6 is an ultra-low-power 32-bit microcontroller from the STM32L4+ Series, based on the ARM Cortex-M4 core with single-precision floating-point unit (FPU). It operates at up to 120 MHz delivering 150 DMIPS, integrates 2 MB of Flash and 640 KB of SRAM, and is housed in a 100-pin LQFP (14x14 mm, 0.5 mm pitch) package. What is an ultra-low-power microcontroller? An ultra-low-power microcontroller is an embedded processor designed to minimize energy consumption while maintaining computational capability through multiple low-power modes (Sleep, Stop, Standby, Shutdown). Within the broader hierarchy, an ultra-low-power MCU is a subset of microcontrollers, which are integrated circuits used in embedded systems. The STM32L4+ family is specifically optimized for battery-powered and energy-harvesting applications, balancing high performance with industry-leading power efficiency measured in nanoamps. Key features of the STM32L4S5VIT6 include multiple 12-bit ADCs (5 Msps), 12-bit DACs, ultra-low-power comparators, advanced timers, and a rich communication interface set: USART, SPI, I2C, CAN, USB OTG with on-chip PHY, SAI, and SDMMC. Security features include a true random number generator (TRNG), AES-256 hardware accelerator, and Hash (SHA-256). The device operates from 1.71V to 3.6V across a -40°C to +85°C temperature range. Technically, the STM32L4S5VIT6 leverages ST's proprietary 90 nm ultra-low-leakage process and proprietary smart architecture. Current consumption reaches as low as approximately 100 nA in Standby with backup domain, and a few microamps in Stop mode with RTC running. This enables years of operation on coin-cell or lithium batteries. The integrated Chrom-ART graphics accelerator and USB OTG with embedded PHY simplify BOM and PCB layout for HMI and USB-connected designs. Typical applications include industrial sensor nodes, smart meters, wearable health monitors, medical instrumentation, IoT edge devices, and USB peripherals. Its combination of low power, high performance, and rich peripherals allows designers to implement complex DSP and control algorithms while maintaining long battery life. When designing with this MCU, pay attention to power supply decoupling: place a 100 nF ceramic capacitor close to each VDD pin and a 4.7 µF bulk capacitor on the main supply. Configure the clock system carefully to balance performance and consumption, using the MSI (multi-speed internal) oscillator for low-power phases and the HSE crystal only when precision is required. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing actionable engineering context for BOM decisions and second sourcing.

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STM32L4S9ZIT6 - Ultra-Low-Power ARM Cortex-M4F MCU | STMicroelectronics
STM32L4S9ZIT6

STM32L4S9ZIT6 - Ultra-Low-Power ARM Cortex-M4F MCU | STMicroelectronics

The STM32L4S9ZIT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M4 core with floating-point unit (FPU). It operates at a maximum frequency of 120 MHz and delivers 150 DMIPS (Dhrystone 2.1) performance. The device integrates 2 MB of flash memory and 640 KB of SRAM, making it suitable for complex applications requiring large code and data storage. It is housed in a 144-pin LQFP package (LQFP144) with a 20x20 mm body and 0.5 mm pitch, providing ample I/O for peripheral-rich 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 (flash and SRAM), and programmable input/output peripherals on a single chip. The STM32L4 series is part of STMicroelectronics' ultra-low-power portfolio, targeting battery-powered and energy-harvesting applications. The Cortex-M4 core with FPU enables efficient digital signal processing (DSP) instructions and single-precision floating-point arithmetic, bridging the gap between general-purpose MCUs and higher-end application processors. Key features include a rich set of analog peripherals: three 12-bit ADCs with up to 5 MSPS, two 12-bit DACs, two operational amplifiers, two comparators, and an internal voltage reference buffer. For connectivity, it offers multiple communication interfaces: 6x I2C, 6x USART/UART, 3x SPI, 2x SAI (serial audio interface), 1x SDMMC, 1x CAN, 1x USB OTG FS, and 1x camera interface (DCMI). The device also includes a Chrom-ART Accelerator (DMA2D) for 2D graphics, a true random number generator (TRNG), and a hardware cryptographic accelerator (AES, DES, 3DES, and SHA-1/SHA-256). The STM32L4S9ZIT6 is built on a 40 nm process technology, achieving ultra-low power consumption: 100 nA in shutdown mode, 3.6 uA in standby mode with RTC, and 28 uA/MHz in run mode. It supports a wide supply voltage range of 1.71V to 3.6V, with an internal voltage regulator and power management unit. The device includes a flexible power controller with multiple low-power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, Shutdown) to optimize energy efficiency. Typical applications include industrial sensors, smart meters, medical devices, wearable devices, IoT nodes, and audio processing. The large memory and rich peripherals make it ideal for applications requiring local data logging, advanced user interfaces, or real-time signal processing. The Chrom-ART accelerator and TFT-LCD controller (LTDC) support graphical displays without burdening the CPU. When designing with this device, pay attention to power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 uF capacitor on the main supply. For low-power modes, configure the RTC and wakeup sources carefully to minimize current consumption. The device supports in-circuit programming and debugging via SWD and JTAG interfaces, facilitating development.

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STM32L552QEI6 - 110MHz Cortex-M33 512KB MCU | ST
STM32L552QEI6

STM32L552QEI6 - 110MHz Cortex-M33 512KB MCU | ST

The STMicroelectronics STM32L552QEI6 is an ultra-low-power 32-bit microcontroller with an Arm Cortex-M33 processor operating up to 110 MHz, 512 KB of Flash memory, and a 132-pin UFBGA package measuring 7 mm by 7 mm. According to the verified manufacturer and distributor results, the device belongs to the STM32L5 series and combines high performance, embedded security, and low-power operation. An ultra-low-power microcontroller is designed to execute embedded workloads while minimizing energy consumption during active processing, standby, and low-power states. The STM32L5 series uses the Arm Cortex-M33 architecture, placing it within the hierarchy of 32-bit RISC microcontroller, embedded processor, and system-on-chip semiconductor. This makes the device suitable for connected products that need substantial processing capability without the power budget associated with continuously active high-performance systems. The verified data identifies an Arm Cortex-M33 core with FPU, 165 DMIPS capability, TrustZone support, and up to 110 MHz operation. The STM32L552QEI6 provides 512 KB of Flash memory, while the STM32L552xx family is also described as supporting up to 256 KB of SRAM. An SMPS is listed in the manufacturer datasheet search result, indicating dedicated support for low-power power-management architectures. Its 132-UFBGA package supports a high pin count in a compact 7 mm by 7 mm footprint. The verified distributor result specifically identifies the STM32L552QEI6 as a 132-UFBGA, 512 KB Flash MCU. The I6 ordering suffix is retained exactly as supplied; temperature-grade, flash-programming, packing, and other suffix-specific details were not independently established by the provided evidence. Typical applications include secure IoT endpoints, industrial sensing equipment, compact data loggers, connected sensors, low-power control systems, and battery-operated products. The Cortex-M33 processor and TrustZone capability are particularly useful when software isolation, protected credentials, and controlled peripheral access are important. The 512 KB Flash capacity supports a larger embedded code base than many ultra-low-power MCUs with minimal memory. A sound design should verify every BGA pad assignment, exposed-pad connection, decoupling requirement, power range, and boot configuration directly against the manufacturer datasheet before PCB release. Because the supplied evidence does not provide a complete public pin list or validated thermal, supply-voltage, and I/O matrices, those values must not be inferred from the family description alone. This page combines verified manufacturer and distributor facts, package-level sourcing information, practical design cautions, and explicit data gaps. Its unique value is separating confirmed STM32L552QEI6 characteristics from unverified assumptions, helping engineers locate the datasheet and assess fit without treating incomplete distributor metadata as a substitute for the official device documentation.

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STM32L552RET6 - 110MHz Arm Cortex-M33 MCU with TrustZone | STMicroelectronics
STM32L552RET6

STM32L552RET6 - 110MHz Arm Cortex-M33 MCU with TrustZone | STMicroelectronics

The STMicroelectronics STM32L552RET6 is an ultra-low-power 32-bit microcontroller based on the Arm Cortex-M33 core with TrustZone for Armv8-M, delivering 110 MHz maximum clock frequency. It integrates 512 KB of flash memory and 256 KB of SRAM, along with a rich set of peripherals including advanced analog, timers, communication interfaces, and security features. The device is housed in a 64-pin LQFP package (10x10 mm) and operates over a supply voltage range of 1.71V to 3.6V, with an extended temperature range of -40°C to +85°C. What is an Arm Cortex-M33 microcontroller? The Arm Cortex-M33 is a modern 32-bit processor core designed for embedded applications requiring a balance of performance, power efficiency, and security. It implements the Armv8-M architecture with optional TrustZone technology, which provides hardware-enforced isolation between secure and non-secure software domains. In the system hierarchy, the STM32L552RET6 is a microcontroller (MCU) that integrates the Cortex-M33 core, memory, and peripherals on a single chip, serving as the central processing unit in embedded systems. It belongs to the STM32L5 series, which is positioned as STMicroelectronics' secure, ultra-low-power MCU family, bridging the gap between general-purpose MCUs and application processors. Key features of the STM32L552RET6 include a 110 MHz Arm Cortex-M33 core with DSP instructions and a floating-point unit (FPU), 512 KB flash, 256 KB SRAM, and a comprehensive set of security features such as TrustZone, a true random number generator (TRNG), and cryptographic acceleration (AES, RSA, ECC). The device also offers multiple low-power modes, including Sleep, Low-power Run, Low-power Sleep, Stop 0/1/2, and Standby, with a typical current consumption of 100 nA in Standby mode with backup domain. The rich analog subsystem includes a 16-bit ADC with hardware oversampling, two 12-bit DACs, and two ultra-low-power comparators. From a technical depth perspective, the STM32L552RET6 is fabricated using ST's advanced 40 nm process technology, which contributes to its exceptional power efficiency. The TrustZone technology enables secure boot and secure firmware update, making it suitable for IoT and security-critical applications. The device also features a flexible memory protection unit (MPU) and a secure access controller (SAC) to enforce security policies. The integrated power management includes a built-in DC-DC converter and a low-power regulator, allowing designers to optimize power consumption based on the application's needs. Typical applications for the STM32L552RET6 include IoT edge devices, smart meters, industrial sensors, medical monitoring equipment, and secure access control systems. Its combination of low power, high performance, and security makes it ideal for battery-powered devices that require secure communication and data protection. For example, in a smart meter, the MCU can handle metering calculations, secure communication with the utility, and display updates while maintaining long battery life. When designing with the STM32L552RET6, it is essential to consider 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. For the VDDA pin, use a dedicated 1 uF capacitor to ensure analog performance. Additionally, the BOOT0 pin configuration must be set correctly for the desired boot mode, and the NRST pin should have a 100 nF capacitor to ground for reliable reset operation. The device supports in-circuit programming and debugging via SWD, which requires minimal external components.

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STM32L552ZET6 - 110MHz Cortex-M33 512KB MCU | STMicroelectronics
STM32L552ZET6

STM32L552ZET6 - 110MHz Cortex-M33 512KB MCU | STMicroelectronics

The STMicroelectronics STM32L552ZET6 is an ultra-low-power 32-bit microcontroller based on the Arm Cortex-M33 core running at up to 110 MHz, with 512 KB of flash memory and 256 KB of SRAM, housed in a 144-pin LQFP (20x20 mm) package. A microcontroller (MCU) is a compact integrated circuit that combines a processor core, memory, and programmable peripherals on a single die to govern a dedicated embedded function. Within the system hierarchy, an MCU is an embedded processor, which belongs to the broader integrated-circuit family. The STM32L552ZET6 belongs to the STM32L5 series, STMicroelectronics' flagship ultra-low-power family, positioned above the STM32L4 series and below the STM32U5 series. Key features include the ARMv8-M architecture with TrustZone hardware security isolation, a floating-point unit (FPU) and DSP instructions for efficient signal processing, 165 DMIPS of performance, and flexible power modes with consumption as low as 33 uA/MHz in Run mode and 0.29 uA in Standby mode. Peripherals include multiple USART/UART, SPI, I2C, CAN-FD, USB FS, SAI audio interfaces, a 12-bit ADC, a 12-bit DAC, and an integrated SMPS buck converter option in the family. Technically, the device is fabricated on a 40 nm process and operates from a 1.71 V to 3.6 V supply. TrustZone enables secure boot, secure firmware update, and hardware-enforced separation of secure and non-secure software domains, which is essential for IoT devices subject to modern security requirements. Typical applications include smart-home and IoT edge nodes, industrial sensors, wearable health monitors, and smart meters where secure communication and multi-year battery life are critical. Design considerations: use STM32CubeMX for pin configuration and peripheral setup, decouple all VDD/VSS pairs with 100 nF capacitors, and select the MSI RC oscillator or an external crystal according to timing accuracy needs. This page synthesizes distributor pricing, drop-in alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet.

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STM32L552ZET6Q - 110MHz Cortex-M33 MCU 512KB | STMicroelectronics
STM32L552ZET6Q

STM32L552ZET6Q - 110MHz Cortex-M33 MCU 512KB | STMicroelectronics

The STMicroelectronics STM32L552ZET6Q is an ultra-low-power 32-bit ARM Cortex-M33 microcontroller with TrustZone and FPU, operating up to 110 MHz and delivering 165 DMIPS, packaged in a 144-pin LQFP (20x20 mm). The device integrates 512 KB of Flash memory and 256 KB of SRAM, plus an on-chip SMPS that improves dynamic efficiency at high CPU loads. An ARM Cortex-M33 microcontroller is a 32-bit RISC core designed for energy-sensitive embedded applications that require hardware isolation between trusted and untrusted code. The Cortex-M33 sits within the broader ARM Cortex-M family (M0/M0+/M3/M4/M7) and belongs to the same ultra-low-power STM32L5 series as the M33-only STM32L552 and Cortex-M33+TrustZone variants. TrustZone for ARMv8-M enables secure boot, secure firmware update, and isolation of cryptographic assets - essential for IoT endpoints subject to evolving cybersecurity regulations. Key features of the STM32L552ZET6Q include the Cortex-M33 core with FPU and TrustZone, 512 KB dual-bank Flash supporting secure/insecure partitioning, 256 KB SRAM, SMPS step-down converter for core supply, multiple low-power modes (Shutdown, Standby, Stop2 with RTC), up to 16-bit ADC, 12-bit DAC, comparators, op-amps, USB Type-C Power Delivery, CAN FD, SDMMC, and crypto/hash accelerators (AES-256, SHA-256, PKA). The part operates across -40C to +85C industrial temperature range. The architecture couples the Cortex-M33 with an AHB/APB bus matrix, DMA controllers, and a wide peripheral set, allowing designers to run DSP code via the FPU while keeping average power draw well below 100 uA/MHz at moderate loads. The integrated SMPS supplies the core, freeing the external LDO for I/O and analog, simplifying PCB design in battery-powered nodes. Typical applications include secure IoT sensors, smart-metering endpoints, wearables, industrial HMI controllers, USB Type-C devices, and low-power wireless sensor nodes. The combination of TrustZone isolation and hardware crypto accelerators also suits connected medical peripherals and asset-tracking tags. When designing with the STM32L552ZET6Q, ensure the SMPS inductor selection matches the datasheet reference design and that decoupling is placed adjacent to every VDD pin pair. TrustZone partitioning requires both Secure and Non-Secure firmware images to be provisioned correctly; verify the secure-boot chain in your BSP before deploying production units. This page synthesizes distributor pricing, drop-in 144-LQFP alternatives, and practical TrustZone/SMPS design notes not aggregated in the manufacturer datasheet.

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STM32L562RET6 - 512KB Flash, 110MHz Cortex-M33 MCU | STMicroelectronics
STM32L562RET6

STM32L562RET6 - 512KB Flash, 110MHz Cortex-M33 MCU | STMicroelectronics

The STMicroelectronics STM32L562RET6 is an ultra-low-power 32-bit microcontroller based on the Arm Cortex-M33 core with TrustZone, running at up to 110 MHz. It integrates 512 KB of flash memory and 256 KB of SRAM, and is housed in a 64-pin LQFP (LQFP64) package. This device is part of the STM32L5 series, designed for secure and power-efficient applications. What is a microcontroller? A microcontroller (MCU) is a compact integrated circuit containing a processor core, memory, and programmable input/output peripherals on a single chip. It is the brain of embedded systems, executing firmware to control devices such as sensors, motors, and displays. 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 STM32L562RET6 specifically combines high performance with ultra-low power consumption, making it suitable for battery-powered and energy-harvesting applications. Key features include the Arm Cortex-M33 core with TrustZone for hardware-enforced security, a floating-point unit (FPU) for math-intensive tasks, and a rich set of peripherals including multiple UARTs, SPIs, I2Cs, USB, and an advanced 12-bit ADC. The device supports a wide supply voltage range of 1.71V to 3.6V and operates over a temperature range of -40°C to +85°C. It also features a low-power mode with current consumption as low as 100 nA in standby mode, extending battery life in portable devices. Technically, the STM32L562RET6 is built on a 40nm process technology, enabling high performance with low leakage. The TrustZone security feature isolates critical code and data, protecting against software attacks. The device includes a hardware cryptographic accelerator supporting AES, RSA, and ECC, as well as a true random number generator (TRNG) for secure key generation. These features make it ideal for IoT devices requiring secure communication and data protection. Typical applications include secure IoT nodes, smart meters, wearable health monitors, industrial sensors, and battery-powered medical devices. The combination of ultra-low power and security makes it a preferred choice for edge devices that must operate for years on a single battery while protecting sensitive data. When designing with this MCU, ensure proper decoupling of the power supply pins with 100nF capacitors placed close to each VDD pin. The VDDA pin requires a separate 1uF capacitor for analog noise filtering. For low-power operation, configure the clock to use the low-speed internal oscillator (LSI) and enable the low-power modes in the firmware to achieve the specified standby current.

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STM32L562ZET6 - 110MHz Cortex-M33 512KB MCU | STMicroelectronics
STM32L562ZET6

STM32L562ZET6 - 110MHz Cortex-M33 512KB MCU | STMicroelectronics

The STMicroelectronics STM32L562ZET6 is an ultra-low-power 32-bit microcontroller featuring an ARM Cortex-M33 core with TrustZone security and FPU, running at up to 110 MHz, with 512 KB of flash memory and 256 KB of SRAM, housed in a 144-pin LQFP (20x20 mm) package. An ARM Cortex-M33 microcontroller is a modern 32-bit embedded processor core that belongs to the ARM Cortex-M family, positioned above the Cortex-M0/M3/M4 in feature set. The Cortex-M33 implements the Armv8-M architecture with optional TrustZone hardware security, which enforces isolation between secure and non-secure software domains. Within the system hierarchy, the MCU integrates the CPU core, memory, and peripherals into a single chip, serving as the main controller in embedded power-management and security architectures. Key features of the STM32L562ZET6 include hardware cryptographic accelerators supporting AES, RSA, and ECC, a true random number generator (TRNG), and a rich analog peripheral set with a 12-bit ADC, 12-bit DAC, and multiple comparators. These enable secure boot, encrypted communication, and direct sensor interfacing without external security chips. The device is built on STMicroelectronics ultra-low-power 40 nm technology, consuming only 19 uA/MHz in Run mode with dynamic voltage scaling. Multiple low-power modes include Sleep, Low-power Run, Low-power Sleep, Stop, and Standby, with typical Standby current of 100 nA. The DSP instructions and hardware FPU accelerate signal processing in power-constrained designs. Typical applications include secure IoT nodes, smart meters, industrial control systems, medical and wearable devices, where TrustZone protects firmware and data while ultra-low-power modes extend battery life for years. When designing with this MCU, decouple every VDD pin with a 100 nF capacitor placed close to the pin, and enable TrustZone with secure boot for security-critical firmware. Verify supply sequencing per the ST datasheet. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-06.

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STM32MP135AAC3 - 650MHz Arm Cortex-A7 MPU | STMicroelectronics
STM32MP135AAC3

STM32MP135AAC3 - 650MHz Arm Cortex-A7 MPU | STMicroelectronics

The STMicroelectronics STM32MP135AAC3 is a 32-bit Arm Cortex-A7 microprocessor (MPU) with the STM32MP135 series clocking up to 1 GHz, an integrated LCD-TFT controller, dual Ethernet, 2x CAN FD, 2x ADC and 24 timers, housed in a TFBGA361 package with industrial temperature grade. The AAC3 ordering code corresponds to a Cortex-A7 core operating at the series base speed grade (650 MHz per ST eStore listings for equivalent A-speed-grade parts such as STM32MP135AAE3). An MPU (microprocessing unit) sits above an MCU in the embedded hierarchy: it runs rich operating systems such as Linux on a Cortex-A application core, offloading real-time tasks to companion Cortex-M devices or peripherals. The STM32MP1 series bridges this gap by combining an application processor with STM32-style peripherals, letting developers reuse STM32 ecosystem tools such as STM32CubeMX and STM32CubeProgrammer. Key features include the single Cortex-A7 core with NEON and FPU, an LCD-TFT display interface, a parallel camera interface, 2x Gigabit-capable Ethernet MACs, 2x CAN FD controllers, 2x 12-bit ADCs, and 24 timers. External DRAM support follows the JEDEC LPDDR2 (JESD209-2E) and LPDDR3 (JESD209-3B) specifications over a 16-bit interface, with a programmable 8-bit or 16-bit data width, an advanced memory scheduler and three-class QoS support on reads. The memory subsystem architecture includes an advanced SDRAM command generator and scheduler that maintains deterministic bandwidth under mixed traffic, which matters for display refresh plus network throughput in HMI designs. Rich connectivity - dual Ethernet, CAN FD, USB and audio interfaces - targets industrial gateways, operator terminals and graphics panels. Typical applications include industrial HMI panels, edge gateways, building automation controllers and POS/graphics terminals where an LCD-TFT controller and dual Ethernet eliminate external bridge chips. Design consideration: budget for LPDDR2/LPDDR3 routing length matching on the 16-bit DRAM interface early, as the TFBGA361 ball map constrains trace escape. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.

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STM32MP135DAC3 - 1GHz Cortex-A7 MPU, TFBGA361 | STMicroelectronics
STM32MP135DAC3

STM32MP135DAC3 - 1GHz Cortex-A7 MPU, TFBGA361 | STMicroelectronics

The STMicroelectronics STM32MP135DAC3 is an Arm Cortex-A7 microprocessor (MPU) running at up to 1 GHz, delivered in a TFBGA361 package. It integrates an LCD-TFT controller, parallel camera interface, 2x Ethernet MAC, 2x CAN FD controllers, 2x 12-bit ADCs, 24 timers, multiple audio interfaces, and hardware crypto and advanced security features. A microprocessor unit (MPU) sits at the top of the embedded processing hierarchy, above microcontrollers (MCUs): unlike an MCU, an MPU such as the STM32MP135 series boots a full operating system (typically Linux via OpenSTLinux, ST's official distribution) from external DDR memory and executes application code from external NOR/NAND flash or eMMC. The STM32MP1 family bridges ST's STM32 MCU ecosystem and higher-performance application processors, letting designers reuse STM32 peripherals and development tooling while gaining Linux-class compute. Key features of the STM32MP135DAC3 include a single Cortex-A7 core clocked up to 1 GHz for high single-thread performance, dual 10/100 Mbps Ethernet MACs for industrial networking and redundant communication, dual CAN FD for vehicle and factory bus connectivity, and an LCD-TFT display controller supporting graphical HMIs. The 2x 12-bit ADCs and 24 timers enable precise motor control and analog acquisition, while the parallel camera interface supports vision-based sensing. Hardware crypto and advanced security features support secure boot and data protection. Architecturally, the STM32MP135 belongs to the STM32MP1 series entry line, which drops the Cortex-M4 co-processor found on MP157-class parts in favor of a cost-optimized single Cortex-A7 core with a rich peripheral set. This makes it well suited to cost-sensitive smart-industrial nodes that still require a full Linux stack, GUI, and networking. Typical applications include industrial HMI and control panels (LCD-TFT plus touch), smart meters and gateways (dual Ethernet, CAN FD), and motor drives and power conversion (24 timers, 2x ADC). The device also fits connected audio equipment using its audio interfaces. For design, budget external DDR3/DDR3L memory, a PMIC power tree (ST recommends STPMIC-class solutions), and boot flash; verify the TFBGA361 footprint against the ST datasheet before layout. This page adds value beyond the ST datasheet by synthesizing drop-in family alternatives, application pairing guidance, and engineering design notes in a single structured reference.

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