STM32L462CEU6 - 80MHz Cortex-M4 MCU | STMicroelectronics
MPN： STM32L462CEU6 ✓ 啟用中STM32L462CEU6 概覽
An ultra-low-power microcontroller is designed to balance responsive computation with low energy consumption during active operation and low-power standby states. The STM32L4 family sits within the hierarchy of embedded MCU, 32-bit RISC microcontroller, low-power processor, and power-management-oriented semiconductor. These characteristics make the STM32L462CEU6 appropriate for compact products where USB connectivity, security, and efficient control processing are required in the same device.
Principal features include an Arm Cortex-M4 core with FPU, a maximum operating frequency of 80 MHz, 512 KB of program Flash, 160 KB of SRAM, and USB device support. The hardware AES-256 accelerator supports encrypted data handling without offloading every cryptographic operation to software. DFSDM interfaces can work with external sigma-delta converters, helping designers build compact measurement or signal-conditioning systems.
The STM32L462CEU6 belongs to the STM32L462xx family and uses an Arm Cortex-M4 RISC architecture. Its combination of high processing speed, low-power design, and dedicated peripherals reduces the need for separate USB controllers, security engines, or high-speed analog interface devices. Firmware can integrate USB communications, control logic, secure data storage, and sensor acquisition within a unified embedded architecture.
Typical uses include USB-connected data acquisition, compact industrial controllers, secure access equipment, low-power sensor nodes, portable medical or diagnostic modules, and USB-connected human-interface devices. The 48-pin package provides a practical balance between peripheral access, board area, and manufacturing complexity for applications that need more I/O than an ultra-small MCU package can offer.
When laying out the PCB, follow the manufacturer pinout, exposed-pad, decoupling, and thermal-via guidance exactly. Place bypass capacitors close to the supply pins, provide a continuous ground reference beneath the device where the package permits, and confirm USB impedance-controlled routing and ESD protection before release to production.
This page consolidates the exact STM32L462CEU6 specifications, same-footprint alternatives, application guidance, and design checks engineers need when planning an ultra-low-power USB-capable embedded system. It also identifies where pin-level, electrical-limit, lifecycle, and supply details must be confirmed in the official STMicroelectronics documentation.
直接替換替代品，適用於 STM32L462CEU6 — 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： STM32L462CEU6 （相同外形與佔位） — 差異在於 Product Type, Package, CPU Core, Flash Memory, Flash Organization.
STM32L462CEU6F
✅ 直接替換📋 參考替代品（不在目錄中）
STM32L462CEU3
✅ 直接替換📋 參考替代品（不在目錄中）
STM32L452CEU3
✅ 直接替換📋 參考替代品（不在目錄中）
STM32L452CEU6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM32L452CEU6F
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L462CEU6 最大額定值與電氣特性
| Product Type | 32-bit ultra-low-power microcontroller (MCU) |
| CPU Core | Arm Cortex-M4 |
| Instruction Set | 32-bit RISC |
| Maximum CPU Frequency | 80 MHz |
| Floating-Point Unit | Present |
| Peak Performance | 100 DMIPS |
| Flash Memory | 512 KB |
| Flash Organization | 512K x 8 bits |
| SRAM | 160 KB |
| USB Interface | USB device |
| Hardware Encryption | AES-256 |
| Digital Filter | DFSDM |
| 封裝 | 48-pin UFQFPN, 7 x 7 mm |
STM32L462CEU6 48-pin ufqfpn, 7 x 7 mm 腳位配置指南
STM32L462CEU6（48-pin ufqfpn, 7 x 7 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： STM32L462CEU6.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32L462CEU6 適用於 6 應用s: USB Data-Acquisition Controller, Industrial Sensor Gateway, Secure USB Access Terminal, Portable Medical Monitor, Low-Power Sensor Node, USB Human-Interface Device.
USB Data-Acquisition Controller
The STM32L462CEU6 fits a USB-connected acquisition system because its 80 MHz Arm Cortex-M4 core provides processing capacity while the integrated USB device interface handles communication with a host. With 512 KB of Flash and 160 KB of SRAM, firmware can combine acquisition control, buffering, calibration, and protocol processing in one controller. The device also includes DFSDM support for compatible sigma-delta converters, reducing the need for separate digital filtering hardware. The principal design trade-off is that USB suspend, clock configuration, and regulator states must be coordinated carefully to preserve low-power operation when the cable is disconnected.
推薦
Industrial Sensor Gateway
The STM32L462CEU6 is well suited to a compact industrial sensor gateway that must process several local inputs and communicate with a higher-level controller. Its 80 MHz Cortex-M4 core with FPU supports real-time control and signal conditioning, while 512 KB of Flash accommodates networking, diagnostics, and firmware update routines. The DFSDM interface can be used with suitable sigma-delta sensors, and AES-256 provides hardware-assisted data protection. A robust gateway design should still provide independent input protection, industrial-level transient immunity, and careful separation of analog and digital routing.
推薦
Secure USB Access Terminal
The STM32L462CEU6 can serve as the controller for a secure USB access terminal combining credential input, local display or actuator control, and encrypted host communication. Its Cortex-M4 processor manages the application logic, while AES-256 hardware acceleration improves the feasibility of encrypted USB data transfer. The 160 KB of SRAM and 512 KB of Flash provide space for protocol stacks, key management, and event handling. Security must be implemented as a complete design rather than inferred from one accelerator: protected keys, controlled boot, firmware update policy, physical tamper response, and USB authentication remain essential.
推薦
Portable Medical Monitor
The STM32L462CEU6 can support a portable medical or diagnostic module that combines sensor acquisition, local processing, and USB connectivity. Its DFSDM interface is useful with compatible high-resolution sigma-delta front ends, while the 80 MHz Cortex-M4 core can run filtering and control algorithms before results are transferred to a host. Low-power capability is valuable for battery-powered equipment, although the system designer must budget energy for the sensor, analog front end, regulator, and USB states. Medical use also requires application-specific electrical-safety, validation, and regulatory work beyond the MCU specification.
推薦
Low-Power Sensor Node
The STM32L462CEU6 is a credible controller for a low-power sensor node because the STM32L462xx family is explicitly positioned as ultra-low-power and provides 160 KB of SRAM alongside 512 KB of Flash. A node can retain measurements in RAM, run local filtering, and wake periodically for sensor conversion or radio activity. DFSDM support can reduce the component count when paired with a compatible sigma-delta sensor. Energy optimization depends on selecting suitable clock and regulator settings, minimizing always-on peripherals, placing the device in the lowest acceptable sleep state, and accounting for board leakage that is outside the MCU itself.
推薦
USB Human-Interface Device
The STM32L462CEU6 is appropriate for a USB keyboard, control panel, interface adapter, or other human-interface product requiring embedded processing beyond a basic USB bridge. The 80 MHz Cortex-M4 core can handle debouncing, display updates, indicator control, and USB protocol tasks, while AES-256 may support protected storage or authenticated communication. Its 48-pin UFQFPN package offers more connection options than a very small microcontroller package while remaining manageable for automated assembly. Layout effort should prioritize short USB differential routing, uninterrupted ground reference, clean supply distribution, and ESD protection at the connector.
推薦
工程參考資料，適用於 STM32L462CEU6 — 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 | STM32L462CEU6F | STM32L462CEU3 | STM32L452CEU3 | STM32L452CEU6 | STM32L452CEU6F |
|---|---|---|---|---|---|---|
| Package | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Family | STM32L462CE | STM32L462CE | STM32L462CE | STM32L452CE | STM32L452CE | STM32L452CE |
| CPU Core | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 |
| Ordering Suffix | U6 | U6F | U3 | U3 | U6 | U6F |
主要差異化特點
- Combines full-family USB device connectivity with hardware AES-256 acceleration (對比STM32L452CEU6)
- Provides 160 KB of SRAM for USB buffering and local data processing (對比STM32L462CEU3)
- Uses the same 48-pin 7 x 7 mm UFQFPN footprint as the closest same-family alternatives (對比STM32L462CEU6F)
- Adds DFSDM support alongside USB and secure hardware acceleration (對比STM32L452CEU3)
設計說明
Use the exact manufacturer package drawing and pin table to create the 48-pin UFQFPN land pattern. Place all required bypass capacitors beside their associated supply pins, connect the exposed pad to the recommended ground-plane arrangement, and add thermal vias where the package drawing calls for them. Keep high-current or switching-converter paths away from sensitive analog inputs. Differential USB traces should have continuous reference-plane support and matched geometry from the MCU through the connector or protection network.
Establish the complete power tree before PCB release. The STM32L462CEU6 may require more than one regulated rail and must be paired with appropriate bypass capacitance and sequencing. Check every pin's voltage domain in the manufacturer pin table, especially analog, I/O, USB, and debug connections. Do not connect external signals until their voltage range has been compared with the relevant VDD domain. For battery designs, include the regulator quiescent current, USB-state current, and sensor leakage when estimating standby energy.
Keep sensitive analog and digital activity separated. DFSDM-connected sensors should have short, quiet signal paths with their return currents referenced to a continuous ground region. Place analog filters and sensor-support components near the MCU pins that use them, while keeping the 80 MHz switching core and USB routing away from precision analog inputs. Review crosstalk, impedance, grounding, and return-current paths with the final stackup rather than relying only on component placement.
A shared 48-pin package does not guarantee that every STM32L4 variant is interchangeable. Before substituting STM32L462CEU6F, STM32L462CEU3, STM32L452CEU3, STM32L452CEU6, or STM32L452CEU6F, verify the USB and DFSDM peripheral sets, AES availability, memory organization, clock tree, pin alternate functions, low-power modes, voltage limits, temperature grade, and boot configuration. Revalidate the firmware against the selected device reference manual and programming configuration.
The UFQFPN exposed pad is part of both electrical and thermal design. Follow the manufacturer recommended footprint, including exposed-pad geometry and via arrangement, to avoid separating heat flow from the die. Estimate junction temperature using the actual maximum ambient temperature, PCB copper area, nearby heat sources, and the selected package thermal data. Periods of 80 MHz operation, USB activity, and continuous peripheral use should be considered together rather than evaluating only the average workload.
合規資訊
Compliance attributes are not stated in the product information and must be confirmed for the exact ordering code from STMicroelectronics.