STM32L4A6VGT6 - 80MHz Cortex-M4 MCU | STMicroelectronics
MPN： STM32L4A6VGT6 ✓ 啟用中STM32L4A6VGT6 概覽
A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, volatile data memory, peripherals, and communication interfaces on one package. The STM32L4 belongs to the MCU hierarchy within embedded processors and semiconductor control devices. Its Cortex-M4 architecture executes firmware efficiently while programmable timers, communication peripherals, and analog interfaces support real-time sensing, communications, and actuator control.
Principal features include an 80 MHz operating frequency, 1 MB of Flash program storage, 320 KB of SRAM, 32-bit processing, and a hardware floating-point unit. USB OTG supports connected USB device and host-oriented designs, while the LCD interface targets embedded human-machine interfaces. AES hardware acceleration improves encrypted-data throughput without assigning cryptography to the central processing unit.
The STM32L4A6VGT6 is especially useful when moderate processing performance and energy-conscious operation are required without moving to a larger package. Its 100-pin LQFP (14x14 mm) format exposes substantially more I/O than smaller MCU packages, supporting multiple external peripherals and mixed-signal interfaces. The Arm Cortex-M4 core and integrated floating-point hardware also provide a practical balance between computational capability, embedded software ecosystem, and board complexity.
Typical applications include industrial sensor controllers, USB-connected data acquisition units, secure access-control equipment, low-power environmental monitors, compact human-machine interfaces, and connected battery-powered instruments. In these systems, the microcontroller can execute control logic, process sensor data, operate timers, and manage communications while retaining a broad set of peripheral interfaces.
PCB design should follow the manufacturer pinout and reference-manual guidance for decoupling, clock stability, reset circuitry, and exposed interface routing. Confirm every peripheral assignment, power-domain requirement, and alternate-function selection in the STM32L4A6xG documentation before finalizing the schematic and PCB footprint.
This product page combines manufacturer device positioning, distributor identification, package and memory details, drop-in same-family options, application guidance, and design-focused engineering notes to support faster component evaluation and sourcing decisions.
直接替換替代品，適用於 STM32L4A6VGT6 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STM32L4A6VGT6 （相同外形與佔位） — 差異在於 Display Interface, Package.
STM32L4A6VGT7
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L4A6VGT8
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L4A6VGT6 最大額定值與電氣特性
| Product Type | 32-bit ultra-low-power microcontroller |
| Processor Core | Arm Cortex-M4 32-bit RISC core |
| Maximum CPU Frequency | 80 MHz |
| Flash Memory | 1 MB |
| Flash Organization | 1M x 8 bits |
| SRAM | 320 KB |
| Floating-Point Unit | Hardware FPU |
| Operating Voltage Options | 1.8 V, 2.5 V, or 3.3 V |
| USB Interface | USB OTG |
| Display Interface | LCD controller |
| Security Accelerator | AES hardware encryption |
| 封裝 | 100-pin LQFP (14 x 14 mm) |
| 安裝類型 | Surface mount |
| Delivery Format | Tray |
STM32L4A6VGT6 100-pin lqfp (14 x 14 mm) 腳位配置指南
STM32L4A6VGT6（100-pin lqfp (14 x 14 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： STM32L4A6VGT6.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32L4A6VGT6 適用於 6 應用s: Industrial Sensor and Control Hub, USB Data Acquisition Device, Secure Access-Control Terminal, Low-Power Environmental Monitor, Compact Human-Machine Interface, Connected Battery-Powered Instrument.
Industrial Sensor and Control Hub
The STM32L4A6VGT6 fits industrial sensing systems that must combine multiple inputs, local logic, and communications within one controller. Its 80 MHz Arm Cortex-M4 core and hardware floating-point unit accelerate filtering and control calculations, while 1 MB of Flash supports firmware, protocol handlers, and data tables. The 320 KB SRAM accommodates acquisition buffers and working state without requiring an external memory device. In a distributed sensor hub, the 100-pin LQFP package also provides access to a broad selection of GPIO and peripheral functions for digital inputs, analog channels, communication links, and local actuator outputs.
USB Data Acquisition Device
STM32L4A6VGT6 is well suited to USB-connected acquisition equipment where measurements are collected locally and transferred to a host computer. The 80 MHz Cortex-M4 core can process sensor data while USB OTG provides a native device interface, reducing reliance on an external USB controller. With 1 MB of Flash and 320 KB of SRAM, firmware, calibration tables, sample buffers, and protocol code can be consolidated on the MCU. Designers should reserve USB routing space for controlled-impedance routing and follow the manufacturer guidance for supply, clock, and decoupling.
Secure Access-Control Terminal
The STM32L4A6VGT6 supports secure access-control terminals that combine credential reading, local decision logic, and user feedback. Its AES hardware encryption accelerates cryptographic operations compared with software-only implementations, while the Cortex-M4 core can manage protocol handling, event logging, and display or indicator control. The 1 MB Flash capacity allows room for firmware, certificates, configuration, and logs, and the 100-pin package provides many I/O options. Security design must still include secure boot, key protection, debug-access policy, and update procedures appropriate to the product threat model.
Low-Power Environmental Monitor
STM32L4A6VGT6 fits compact environmental monitors that periodically sample sensors and remain active for long periods between readings. Its ultra-low-power STM32L4 architecture is appropriate for battery-operated equipment, while the 80 MHz Cortex-M4 core handles filtering, compensation, and local decision-making without a separate processor. The 320 KB SRAM provides space for measurement buffers and protocol state, and 1 MB of Flash supports application firmware and calibration tables. Duty cycling, peripheral clock gating, and regulator settings should be selected together because each affects both responsiveness and total energy consumption.
Compact Human-Machine Interface
STM32L4A6VGT6 can serve as the controller for a compact LCD-based operator interface because it combines an 80 MHz Cortex-M4 core with dedicated LCD-controller support. The processor can manage screen updates, keypad or touch input, status indicators, and application logic, while 1 MB of Flash and 320 KB of SRAM support graphical resources and protocol handling. Its 100-pin LQFP package also leaves ample connections for display and control peripherals. Display timing, interface voltage, contrast adjustment, and panel-specific initialization should be validated against the selected panel and STMicroelectronics reference materials.
Connected Battery-Powered Instrument
STM32L4A6VGT6 is suitable for connected instruments that balance responsive application processing with low idle energy. The 80 MHz Cortex-M4 core and hardware FPU support real-time measurement functions, while USB OTG and other serial interfaces enable data exchange with a host or peripheral. Its 1 MB Flash and 320 KB SRAM are sufficient for embedded firmware, configuration, and working buffers in many compact products. The low-power architecture makes periodic sensing, local display, and communications practical, although average current should be evaluated across active, sleep, standby, and wake-up intervals rather than from a single operating mode.
工程參考資料，適用於 STM32L4A6VGT6 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STM32L4A6VGT7 | STM32L4A6VGT8 |
|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 100-pin LQFP (14 x 14 mm) | 100-pin LQFP (14 x 14 mm) | 100-pin LQFP (14 x 14 mm) |
| Processor Core | Arm Cortex-M4 32-bit RISC core | Arm Cortex-M4 32-bit RISC core | Arm Cortex-M4 32-bit RISC core |
| Maximum CPU Frequency | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 1 MB (1M x 8 bits) | 1 MB (1M x 8 bits) | 1 MB (1M x 8 bits) |
| SRAM | 320 KB | 320 KB | 320 KB |
| Maximum Operating Temperature | 85°C | 105°C | 125°C |
| USB Interface | USB OTG | USB OTG | USB OTG |
| Display Interface | LCD controller | LCD controller | LCD controller |
| Hardware Security | AES hardware encryption | AES hardware encryption | AES hardware encryption |
主要差異化特點
- Higher temperature ceiling for extended-temperature operation (對比STM32L4A6VGT6)
- Maximum thermal headroom in the same-family pin-compatible range (對比STM32L4A6VGT7)
- Integrated USB, LCD, and hardware AES capability (對比STM32L4A6VGT8)
設計說明
Plan the power tree around the STM32L4A6VGT6 operating-voltage options of 1.8 V, 2.5 V, or 3.3 V. Confirm the selected regulator output, core-voltage range, and brownout behavior against the device documentation before assigning external interfaces. Place the required supply and bypass capacitors close to their associated power pins, using the manufacturer layout guidance for loop area and ground return paths.
Use the 100-pin LQFP pin-description table and package drawing to assign every signal and alternate function. The 14 x 14 mm footprint leaves more escape space than small-lead packages, but mixed-signal, USB, clock, and debug routes still need deliberate planning. Keep high-speed or sensitive routes away from switching nodes and route debug and reset signals with consideration for signal integrity and production test access.
Do not assume that a related STM32L4A6 suffix is an unconditional substitute. Temperature grade can change the maximum operating temperature even when the package, core, and memory match. Before replacing STM32L4A6VGT6 with STM32L4A6VGT7 or STM32L4A6VGT8, verify the orderable suffix, temperature range, peripheral configuration, firmware support, and all pin assignments against the manufacturer documentation.
Apply controlled-impedance and return-path techniques to USB communication lines, using the manufacturer layout recommendations for the STM32L4A6xG family. Avoid routing USB signals across plane splits, maintain suitable clearance from noisy power stages, and provide a continuous ground reference beneath the interface. Validate the final board with the intended crystal, USB connector, cables, and enclosure because external connectivity materially affects signal integrity.
合規資訊
No target-specific compliance declaration was identified. Confirm RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification status using the current manufacturer product documentation and declarations.