STM32L476ZGT6 - 80MHz Cortex-M4 1MB MCU | STMicroelectronics
部品番号: STM32L476ZGT6 ✓ 生産中STM32L476ZGT6 概要
A microcontroller is a programmable system-on-chip that integrates a processor core, memory, peripherals, and communication interfaces into one compact device. The STM32L4 family belongs to the STM32 ultra-low-power portfolio and is designed for embedded systems requiring broad peripheral connectivity, deterministic control, and low-power operation. Within that hierarchy, the Cortex-M4 core provides general-purpose embedded processing while the STM32L476 device adds extensive connectivity and low-power peripherals.
Principal features include up to 80 MHz operation, 100 DMIPS performance, a single-precision hardware FPU, 1 MB of Flash, 128 KB of SRAM, and USB OTG FS connectivity. The 144-pin LQFP package exposes substantially more I/O than smaller packages, making the device suitable for systems that need parallel interfaces, multiple communication peripherals, LCD control, or a high pin count. Its 20 mm by 20 mm body also provides adequate routing space for a multilayer PCB.
The Cortex-M4 architecture combines a 32-bit RISC core with DSP extensions and the hardware floating-point unit. This allows efficient control-loop execution, digital filtering, audio-oriented signal processing, and other workloads that benefit from single-precision arithmetic. At the same time, the STM32L476 family supports low-power operating modes that help reduce energy consumption during idle and active-control phases in embedded products.
Typical applications include industrial control and automation equipment, human-machine interfaces with LCD displays, USB-connected data loggers, connected sensors, building-control terminals, and compact embedded systems requiring both substantial memory and a large GPIO count. USB OTG FS can support peripheral connectivity, while the LCD interface and extensive pin availability simplify designs that otherwise require additional interface controllers.
PCB design should follow the manufacturer pin-definition and land-pattern guidance for the 144-pin LQFP package. Place decoupling capacitors close to the appropriate supply pins, keep sensitive analog and high-speed routing away from switching nodes, and verify that the selected external components support the device's power and clock requirements. Firmware should also be qualified for the intended operating conditions rather than validated only in a nominal laboratory setup.
This page combines the official device description and datasheet characteristics with application guidance, package considerations, and same-footprint alternatives for engineers evaluating an STM32L476 design. It is intended to accelerate part selection while keeping memory, core, package, and peripheral compatibility requirements explicit.
ドロップイン代替品: STM32L476ZGT6 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
STM32L476ZGT7
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM32L476ZET6
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM32L476ZCT6
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM32L476ZGT6 最大定格＆電気的特性
| Product Type | 32-bit ultra-low-power microcontroller |
| Processor Core | Arm Cortex-M4 with FPU |
| Architecture | 32-bit RISC |
| Maximum CPU Frequency | 80 MHz |
| Peak Performance | 100 DMIPS |
| Flash Memory | 1 MB |
| SRAM | 128 KB |
| USB Interface | USB OTG FS |
| Display Support | LCD controller |
| External SMPS Support | Supported |
| パッケージ | 144-pin LQFP |
| Package Body Size | 20 mm x 20 mm |
| 実装タイプ | Surface mount |
STM32L476ZGT6 20 mm x 20 mm ピン配置ガイド
STM32L476ZGT6 (20 mm x 20 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: STM32L476ZGT6.
詳細は データシート をご参照ください。
主な用途
STM32L476ZGT6 の用途: 6 件s: Industrial Automation Controller, LCD Human-Machine Interface, USB Connected Data Logger, Connected Sensor Node, Building Control Terminal, Digital Signal Control Platform.
Industrial Automation Controller
The STM32L476ZGT6 fits industrial automation controllers that combine real-time supervision with numerous peripheral connections. Its Cortex-M4 core operates up to 80 MHz and delivers 100 DMIPS, allowing control tasks and communication routines to share processing time without moving routine logic into external hardware. The 1 MB Flash provides room for application code, configuration, and update data, while 128 KB of SRAM supports working state and protocol buffers. The 144-pin LQFP exposes more I/O than compact MCU packages, which can reduce the need for interface expanders when connecting sensors, actuators, and field buses. During design-in, verify each peripheral instance, interrupt priority, and pin assignment against the manufacturer datasheet.
おすすめ
LCD Human-Machine Interface
The STM32L476ZGT6 is suitable for an LCD-based human-machine interface because the device includes LCD controller support alongside an 80 MHz Cortex-M4 core. The processor can refresh a display, interpret controls, update status graphics, and service serial communications without requiring a separate display controller. Its 144-pin LQFP package also offers a generous pin budget for display signals, touch-control inputs, indicators, and communication peripherals. The 128 KB of SRAM helps support display buffers and application state, while 1 MB of Flash accommodates interface assets and firmware. Engineers should confirm electrical levels, panel timing, and pin multiplexing in the manufacturer documentation before finalizing the display subsystem.
おすすめ
USB Connected Data Logger
The STM32L476ZGT6 supports USB-connected data logging because USB OTG FS is integrated with substantial Flash and SRAM. A logger can maintain application code in 1 MB of Flash, buffer sampled records in 128 KB of SRAM, and transfer data through USB while retaining control of the acquisition path. The 144-pin LQFP package provides additional GPIO for storage control, status indicators, sensors, and communications beyond what the USB interface requires. For field deployment, design the USB path with appropriate protection, validate enumeration across the intended host environment, and confirm current consumption in the selected low-power states. The exact USB electrical and firmware requirements should be taken from the official family datasheet.
おすすめ
Connected Sensor Node
The STM32L476ZGT6 suits connected sensor nodes that need local signal handling, protocol support, and flexible I/O. Its Cortex-M4 processor operates up to 80 MHz with hardware floating-point support, which is useful for filtering and scaling sensor measurements before communication. The 1 MB Flash and 128 KB of SRAM provide space for firmware, calibration information, and short-term measurement buffering, while the 144-pin LQFP can support several sensors and local actuators. Low-power modes help match the ultra-low-power family positioning for battery-operated equipment. Developers should budget acquisition latency, active time, sleep current, and peripheral shutdown behavior in the complete power profile rather than inferring battery life from the maximum clock frequency alone.
おすすめ
Building Control Terminal
The STM32L476ZGT6 can serve as the central controller in a building-control terminal that coordinates sensors, relay outputs, local displays, and field communications. Its large 144-pin LQFP package reduces pin multiplexing pressure compared with smaller devices, and the 80 MHz Cortex-M4 core provides adequate responsiveness for periodic control tasks. The 1 MB of embedded Flash allows longer application code and diagnostic data than lower-density STM32L476 variants, while 128 KB of SRAM supports communication stacks and state machines. For HVAC or access-control products, validate the operating-temperature grade, isolation strategy, relay drive circuitry, and low-power behavior. The MCU is suitable as a controller platform, but external circuitry remains necessary for high-voltage or high-current interfaces.
おすすめ
Digital Signal Control Platform
The STM32L476ZGT6 can act as a digital signal control platform when a design benefits from an 80 MHz Cortex-M4 with FPU and DSP extensions. It is appropriate for active filtering, motor-control supervisory functions, signal analysis, and mixed analog-to-digital control systems that do not require a dedicated DSP. The hardware FPU reduces the software burden of single-precision calculations, while 1 MB of Flash and 128 KB of SRAM support moderately complex algorithms and control state. Its 144-pin package offers extensive connectivity for sensors and power converters. Real-time performance must be demonstrated using the final clock tree, memory configuration, and peripheral load; the 100 DMIPS figure should not be treated as the throughput of every algorithm.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STM32L476ZGT6 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STM32L476ZGT7 | STM32L476ZET6 | STM32L476ZCT6 |
|---|---|---|---|---|
| Package | 144-pin LQFP, 20 mm x 20 mm | 144-pin LQFP | 144-pin LQFP | 144-pin LQFP |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Processor Core | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Peak Performance | 100 DMIPS | 100 DMIPS | 100 DMIPS | 100 DMIPS |
| Flash Memory | 1 MB | 1 MB | 512 KB | 256 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB |
| USB Interface | USB OTG FS | USB OTG FS | USB OTG FS | USB OTG FS |
| Display Support | LCD controller | LCD controller | LCD controller | LCD controller |
| Temperature Grade | T6 grade | T7 grade | T6 grade | T6 grade |
主な差別化要因
- Largest Flash configuration among the compared STM32L476 144-pin options （vs STM32L476ZET6)
- Additional memory headroom over the 256 KB density variant （vs STM32L476ZCT6)
- T6 and T7 temperature-grade choices preserve the same 144-pin footprint （vs STM32L476ZGT7)
設計ノート
Design the supply network around the voltage limits, current requirements, and sequencing rules in the STM32L476xx datasheet. Place the required bulk and high-frequency decoupling capacitors at the corresponding power pins, with the shortest practical return paths to the ground plane. The family supports an external SMPS configuration, but regulator topology and component values must follow the manufacturer guidance rather than being inferred from generic low-power MCU examples.
Use the official 144-pin LQFP land pattern and pin numbering without rotating or mirroring the footprint. The package is 20 mm by 20 mm, so preserve adequate solder-mask and courtyard clearance. Place decoupling, oscillator, and programming-access components on the same PCB side where practical, and route high-current or switching signals away from sensitive analog and communication areas to reduce coupling into the MCU.
Before assigning the 144 available pins, create a peripheral matrix covering USB OTG FS, LCD, communications, timers, and debug functions. The large package offers many routing options, but alternate-function conflicts and port-sharing requirements can still prevent a valid allocation. Review every exposed pin against the current manufacturer pin table, mark unused pins according to device requirements, and preserve programming and recovery access in the production layout.
Do not treat the 100 DMIPS figure as guaranteed application throughput or assume that a smaller STM32L476 memory variant can hold identical firmware without review. The STM32L476ZET6 provides half the Flash of the target and the STM32L476ZCT6 provides one quarter, so linker placement, bootloader assumptions, and update mechanisms may need adjustment. Likewise, a package-compatible MCU does not guarantee identical peripheral behavior unless the exact part is confirmed.
The maximum 80 MHz operating frequency is not a continuous thermal target for every enclosure. Estimate local dissipation from the selected clock, active time, supply voltage, and GPIO load, then verify the junction and board temperature with the manufacturer's electrical limits. Keep exposed thermal pathways unobstructed, control airflow where needed, and revalidate temperature behavior when the ambient range, enclosure, or supply voltage changes.
コンプライアンス情報
The available manufacturer and distributor pages do not provide explicit compliance results for this exact orderable MPN. Confirm RoHS, REACH, AEC-Q100 qualification, lead-free status, halogen-free status, and conflict-minerals declarations with STMicroelectronics before regulatory submission.