STM32L452CEU6 - 80MHz Cortex-M4 512KB MCU | STMicroelectronics
MPN： STM32L452CEU6 ✓ 啟用中STM32L452CEU6 概覽
An ultra-low-power microcontroller is a semiconductor device designed to balance processing capability with minimized energy consumption. The STM32L4 family belongs to the hierarchy of 32-bit RISC microcontrollers, embedded processors, and low-power embedded systems. This makes the STM32L452CEU6 suitable for battery-operated equipment, industrial controls, connected sensors, and portable products in which processing performance, analog measurement, and standby current are all important design considerations.
Principal features include an 80 MHz Arm Cortex-M4 core, 512 KB of Flash, 160 KB of SRAM, and support for up to 100 DMIPS according to the manufacturer datasheet. The device integrates analog and audio capabilities alongside an external SMPS option. Its 32-bit architecture and floating-point unit support efficient control calculations and digital signal processing without requiring a separate accelerator for many embedded workloads.
The 48-pin UFQFPN package provides access to the STM32L4 mixed-signal peripheral set while supporting compact, surface-mount PCB construction. Its supply-voltage listing includes 2.5 V and 3.3 V operating configurations. Designers should use the package drawing and pin-definition table in the manufacturer datasheet when assigning tracks, because the exposed pad, supply pins, ground pins, and analog functions must be connected according to the prescribed land pattern.
Typical applications include low-power industrial sensor nodes, connected measurement equipment, battery-powered data loggers, compact audio-control systems, and embedded controls using an external DC-DC converter. The combination of 512 KB of program memory, 160 KB of SRAM, and an 80 MHz core also supports protocol gateways and supervisory controllers that need more local memory than a basic microcontroller.
A critical design consideration is power-rail planning. Confirm the internal regulator, external SMPS configuration, decoupling requirements, and operating mode transitions in the manufacturer datasheet before layout. Place the required input and bulk capacitors close to their designated pins, provide a low-impedance ground structure, and account for thermal performance at the maximum expected ambient temperature.
This product page combines the manufacturer's core device information with package guidance, sourcing details, application-oriented engineering considerations, and a conservative assessment of pin-compatible alternatives. It is designed to support component selection before the complete STM32L452xx electrical characteristics and firmware requirements are reviewed.
直接替換替代品，適用於 STM32L452CEU6 — 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： STM32L452CEU6 （相同外形與佔位） — 差異在於 Package, SRAM, ADC, DAC, Flash Memory.
STM32L451CEU6
✅ 直接替換聯絡詢價
查看資料表 →STM32L452CEU6 最大額定值與電氣特性
| Product Type | 32-bit ultra-low-power microcontroller |
| CPU Core | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 80 MHz |
| Instruction Set | 32-bit RISC |
| Maximum Performance | 100 DMIPS |
| Embedded Flash Memory | 512 KB |
| SRAM | 160 KB |
| Operating Voltage | 2.5 V / 3.3 V |
| 封裝 | 48-pin UFQFPN (7 x 7 mm) |
| 安裝類型 | Surface mount |
| External SMPS Support | Supported |
| Analog Peripherals | Supported |
| Audio Support | Supported |
STM32L452CEU6 48-pin ufqfpn (7 x 7 mm) 腳位配置指南
STM32L452CEU6（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： STM32L452CEU6.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32L452CEU6 適用於 6 應用s: Industrial Sensor Controller, Battery-Powered Data Logger, Connected Measurement Instrument, Compact Audio Control System, External DC-DC Powered Embedded Control, Portable Diagnostic Controller.
Industrial Sensor Controller
The STM32L452CEU6 fits industrial sensor controllers that combine local signal conditioning with constrained power budgets. Its Arm Cortex-M4 core operates up to 80 MHz, while 160 KB of SRAM supports filtering buffers, calibration data, and communications state. The 512 KB of embedded Flash is sufficient for application firmware, protocol stacks, and parameter storage. Place the MCU beside the sensor interface, keep analog routing away from switching nodes, and follow the manufacturer pin and decoupling recommendations. Low-power operating modes can also reduce consumption during inactive measurement intervals.
推薦
Battery-Powered Data Logger
The STM32L452CEU6 is appropriate for battery-powered data loggers that must perform local computation without relying on continuous cloud connectivity. Its 80 MHz Cortex-M4 processor can handle sensor scheduling, data conditioning, and event logging, while 512 KB of Flash stores firmware and 160 KB of SRAM provides working space for active records. The ultra-low-power STM32L4 architecture supports a balance between acquisition performance and sleep-mode consumption. Use the manufacturer low-power configuration guidance, minimize leakage around the sensor path, and verify battery-life calculations with the final load current and sampling interval.
推薦
Connected Measurement Instrument
The STM32L452CEU6 suits connected measurement instruments that need deterministic control, local data handling, and multiple peripheral functions in one compact package. The 32-bit Cortex-M4 core provides up to 100 DMIPS, while 512 KB of Flash and 160 KB of SRAM allow embedded algorithms and communication firmware to coexist. Its integrated analog, audio, and external SMPS support can simplify signal-chain design when used according to the manufacturer configuration tables. Preserve analog signal integrity with short traces, continuous ground references, and separation from digital switching return currents.
推薦
Compact Audio Control System
The STM32L452CEU6 can serve as the supervisory controller in compact audio products that combine digital control, analog monitoring, and communication. Its Cortex-M4 FPU supports efficient fixed- and floating-point control work, and the manufacturer identifies audio capability as part of the STM32L452xx feature set. The 160 KB of SRAM accommodates short audio buffers and control state, while 512 KB of Flash stores control firmware. Follow the manufacturer pin-definition table for audio interfaces and keep analog and digital return paths separated to limit coupling into the signal chain.
推薦
External DC-DC Powered Embedded Control
The STM32L452CEU6 is suitable for systems using an external switched-mode power supply because the STM32L452xx family supports external SMPS configurations. The MCU can control sequencing and monitor a regulated rail while its 80 MHz core handles protocol processing and real-time control. This arrangement can support efficient multi-rail systems where a switching converter supplies the required voltage and the MCU manages startup and fault states. Follow the exact SMPS schematic and component values in the manufacturer datasheet, and validate ripple, startup order, and thermal performance together on the power-supply prototype.
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Portable Diagnostic Controller
The STM32L452CEU6 fits portable diagnostic controllers that combine compact dimensions, low standby demand, and substantial local memory. Its 512 KB of Flash supports firmware, calibration tables, and diagnostic workflows, while 160 KB of SRAM supports working data and communication buffers. The 48-pin UFQFPN package measures 7 x 7 mm, allowing a small PCB footprint, although careful thermal and layout planning remains necessary. Use low-power states between tests, provide a stable reference for analog measurements, and check the manufacturer electrical limits before defining the enclosure temperature range.
推薦
推薦產品摘要
工程參考資料，適用於 STM32L452CEU6 — 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 | STM32L451CEU6 |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 48-pin UFQFPN (7 x 7 mm) | 48-pin UFQFPN (7 x 7 mm) |
| Peripheral Configuration | STM32L452xx configuration | Similar specifications with different peripheral configurations |
主要差異化特點
- Uses the STM32L452xx peripheral configuration rather than the different STM32L451CEU6 configuration (對比STM32L451CEU6)
- 512 KB of embedded Flash for firmware and data (對比STM32L451CEU6)
- 160 KB of SRAM for active control and communication data (對比STM32L451CEU6)
設計說明
Use the STM32L452xx manufacturer power-supply configuration for the selected internal-regulator or external-SMPS mode. Place every required decoupling capacitor directly beside its designated supply and ground pins, keep the return path short, and provide adequate copper for current transients. Validate startup, brownout behavior, and rail sequencing on the assembled PCB because normal-operation tests may not expose startup margin or unstable reference behavior.
The 48-pin UFQFPN requires a land pattern based on the manufacturer package drawing, including correct treatment of the exposed pad. Maintain the specified pad and via dimensions rather than adapting a generic 48-pin footprint. Keep analog inputs away from switching-node currents and high-speed return paths, connect ground pins to a continuous plane, and place bulk and high-frequency decoupling according to the datasheet guidance before finalizing component placement.
The UFQFPN exposed pad is central to package heat transfer, so thermal performance depends on the PCB copper and via arrangement rather than the visible IC area alone. Do not assume that the small package automatically requires a heatsink. Estimate junction temperature from the maximum expected ambient temperature, package dissipation, and PCB thermal resistance, then revise the copper or thermal strategy if the resulting operating margin is inadequate.
Do not substitute an MCU based only on package dimensions and clock rate. The STM32L451CEU6 has a different peripheral configuration from the STM32L452CEU6, so a footprint-compatible device can still require firmware, pin-multiplexing, interrupt, or peripheral changes. Create a pin-by-pin and peripheral-by-peripheral comparison, verify boot and debug behavior, and reproduce the required low-power sequence before approving a second-source design.
合規資訊
No explicit compliance declaration was stated for STM32L452CEU6 in the cited technical and distributor information. Confirm the current declarations for the exact ordering code and package.
