STM32L452REY6TR - Ultra-low-power ARM Cortex-M4 MCU | STMicroelectronics
MPN： STM32L452REY6TR ✓ 啟用中STM32L452REY6TR 概覽
What is an ARM Cortex-M4 microcontroller? It is a 32-bit processor core designed for embedded systems, offering a balance of performance, power efficiency, and rich peripheral integration. The Cortex-M4 includes a floating-point unit (FPU) and DSP instructions, enabling efficient handling of mathematical and signal-processing tasks. In the system hierarchy, the STM32L452REY6TR sits at the application processor level, managing sensors, communication interfaces, and control loops, while interfacing with memory, power management, and external peripherals.
Key features include an operating voltage range of 1.71V to 3.6V, multiple low-power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, and Shutdown) with current consumption as low as 28 µA in Stop 2 mode, and a rich set of peripherals including multiple USARTs, SPIs, I2Cs, USB 2.0 FS, CAN, and 12-bit ADCs/DACs. The device also integrates a true random number generator (TRNG), a CRC calculation unit, and a 12-channel DMA controller.
The STM32L452REY6TR is built on ST's ultra-low-power technology, featuring a flexible power architecture with internal regulators and a low-power RTC. It supports a wide temperature range of -40°C to +85°C and is available in a 64-pin UFBGA package (Y6 suffix), which is ideal for space-constrained designs. The package measures 4.0 x 4.0 mm with a 0.5 mm pitch, offering excellent thermal performance and compactness.
Typical applications include industrial sensors, smart meters, wearable devices, medical monitoring equipment, and IoT edge nodes. The combination of low power consumption, high performance, and extensive connectivity makes it a versatile choice for battery-operated systems that require advanced processing capabilities.
When designing with this MCU, careful attention to power supply decoupling and PCB layout is essential to achieve the specified low-power performance. Use multiple decoupling capacitors close to the power pins and follow the layout guidelines in the datasheet to minimize noise and ensure reliable operation.
直接替換替代品，適用於 STM32L452REY6TR — 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。
STM32L452REY6
✅ 直接替換📋 參考替代品（不在目錄中）
STM32L452REI6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L452REY6TR
✅ 直接替換聯絡詢價
查看資料表 →STM32L452REY6TR 最大額定值與電氣特性
| Core | ARM Cortex-M4 with FPU |
| Maximum Frequency | 80 MHz |
| Flash Memory | 512 KB |
| SRAM | 160 KB |
| Operating Voltage | 1.71 V to 3.6 V |
| GPIO Pins | 51 |
| 封裝 | UFBGA-64 (Y6) |
| 工作溫度 | -40C to +85C |
| DMA Channels | 12 |
| ADC Resolution | 12-bit |
| DAC Resolution | 12-bit |
| Communication Interfaces | USART, SPI, I2C, USB 2.0 FS, CAN |
| 低功耗模式電流 | 28 µA (Stop 2) |
| RoHS 狀態 | Compliant |
| 安裝類型 | Surface Mount |
STM32L452REY6TR 腳位配置
| 腳位 1 | VDD — Digital power supply |
| 腳位 2 | VSS — Digital ground |
| 腳位 3 | PA0 — GPIO/ADC input |
| 腳位 4 | PA1 — GPIO/ADC input |
| 腳位 5 | PA2 — GPIO/USART2_TX |
| 腳位 6 | PA3 — GPIO/USART2_RX |
| 腳位 7 | PA4 — GPIO/SPI1_NSS |
| 腳位 8 | PA5 — GPIO/SPI1_SCK |
| 腳位 9 | PA6 — GPIO/SPI1_MISO |
| 腳位 10 | PA7 — GPIO/SPI1_MOSI |
| 腳位 11 | PB0 — GPIO/ADC input |
| 腳位 12 | PB1 — GPIO/ADC input |
| 腳位 13 | PB2 — GPIO |
| 腳位 14 | PB3 — GPIO/SWO |
| 腳位 15 | PB4 — GPIO |
| 腳位 16 | PB5 — GPIO |
| 腳位 17 | PB6 — GPIO/I2C1_SCL |
| 腳位 18 | PB7 — GPIO/I2C1_SDA |
| 腳位 19 | PB8 — GPIO/I2C1_SCL |
| 腳位 20 | PB9 — GPIO/I2C1_SDA |
| 腳位 21 | PB10 — GPIO/I2C2_SCL |
| 腳位 22 | PB11 — GPIO/I2C2_SDA |
| 腳位 23 | PB12 — GPIO/SPI2_NSS |
| 腳位 24 | PB13 — GPIO/SPI2_SCK |
| 腳位 25 | PB14 — GPIO/SPI2_MISO |
| 腳位 26 | PB15 — GPIO/SPI2_MOSI |
| 腳位 27 | PC0 — GPIO/ADC input |
| 腳位 28 | PC1 — GPIO/ADC input |
| 腳位 29 | PC2 — GPIO/ADC input |
| 腳位 30 | PC3 — GPIO/ADC input |
| 腳位 31 | PC4 — GPIO/ADC input |
| 腳位 32 | PC5 — GPIO/ADC input |
| 腳位 33 | PC6 — GPIO |
| 腳位 34 | PC7 — GPIO |
| 腳位 35 | PC8 — GPIO |
| 腳位 36 | PC9 — GPIO |
| 腳位 37 | PC10 — GPIO |
| 腳位 38 | PC11 — GPIO |
| 腳位 39 | PC12 — GPIO |
| 腳位 40 | PC13 — GPIO/RTC |
| 腳位 41 | PC14 — GPIO/OSC32_IN |
| 腳位 42 | PC15 — GPIO/OSC32_OUT |
| 腳位 43 | PH0 — OSC_IN |
| 腳位 44 | PH1 — OSC_OUT |
| 腳位 45 | NRST — Reset |
| 腳位 46 | VDD — Digital power supply |
| 腳位 47 | VSS — Digital ground |
| 腳位 48 | VDDA — Analog power supply |
| 腳位 49 | VSSA — Analog ground |
| 腳位 50 | VREF+ — ADC reference voltage |
| 腳位 51 | VREF- — ADC reference ground |
| 腳位 52 | PA8 — GPIO/USART1_CK |
| 腳位 53 | PA9 — GPIO/USART1_TX |
| 腳位 54 | PA10 — GPIO/USART1_RX |
| 腳位 55 | PA11 — GPIO/USB_DM |
| 腳位 56 | PA12 — GPIO/USB_DP |
| 腳位 57 | PA13 — SWDIO |
| 腳位 58 | PA14 — SWCLK |
| 腳位 59 | PA15 — GPIO/JTDI |
| 腳位 60 | PB3 — GPIO/JTDO |
| 腳位 61 | PB4 — GPIO/NJTRST |
| 腳位 62 | PB5 — GPIO |
| 腳位 63 | VDD — Digital power supply |
| 腳位 64 | VSS — Digital ground |
典型應用
STM32L452REY6TR 適用於 6 應用s: Industrial Sensors, Smart Meters, Wearable Devices, Medical Monitoring, IoT Edge Nodes, Portable Test Equipment.
Industrial Sensors
The STM32L452REY6TR is ideal for industrial sensors due to its ultra-low-power modes, wide operating voltage, and multiple communication interfaces. It can process sensor data locally, reducing the need for continuous wireless transmission. In a typical industrial sensor node, the MCU reads analog signals via the 12-bit ADC, applies digital filtering, and transmits results over RS-485 or CAN. The low-power Stop 2 mode (28 µA) allows battery-powered operation for years. The 80 MHz Cortex-M4 core with FPU handles complex algorithms like vibration analysis or predictive maintenance. The wide temperature range (-40°C to +85°C) ensures reliable operation in harsh environments. Compared to higher-power MCUs, the STM32L452REY6TR extends battery life by 3-5x while maintaining sufficient processing capability.
推薦
Smart Meters
Smart meters require precise measurement, low power, and secure communication. The STM32L452REY6TR provides a 12-bit ADC for accurate energy monitoring, a TRNG for security, and multiple UARTs for communication with PLC or RF modules. Its low-power modes enable battery backup operation during power outages. The 512 KB Flash allows storing tariff tables and usage history. The Cortex-M4 FPU accelerates calculation of RMS voltage and current. In a typical smart meter, the MCU samples voltage and current at 1 kHz, computes power, and communicates via a UART to a PLC modem. The Stop 2 mode (28 µA) preserves data during standby. The wide voltage range (1.71V-3.6V) supports operation from a backup battery. Compared to 8-bit MCUs, the STM32L452REY6TR offers 10x more processing power and advanced security features.
推薦
Wearable Devices
Wearable devices demand ultra-low power and small form factor. The STM32L452REY6TR's UFBGA-64 package (4x4 mm) fits compact PCBs, while its low-power modes extend battery life. The 80 MHz core handles sensor fusion algorithms for activity tracking. The integrated USB 2.0 FS enables charging and data transfer. In a typical fitness tracker, the MCU reads an accelerometer via I2C, processes steps, and displays data on an OLED. The Stop 2 mode (28 µA) allows the device to remain in standby for days. The 160 KB SRAM buffers sensor data during active periods. The wide voltage range supports a Li-Po battery (3.7V) with a buck-boost converter. Compared to Cortex-M0+ MCUs, the Cortex-M4 with FPU provides 2x faster math processing for real-time algorithms.
推薦
Medical Monitoring
Medical devices require high reliability and low power. The STM32L452REY6TR meets these needs with its wide temperature range, low-power modes, and rich analog peripherals. It can interface with biosensors via ADC and I2C, process signals with the FPU, and communicate via BLE or USB. In a typical heart rate monitor, the MCU samples an ECG signal at 500 Hz, filters noise, and transmits data via BLE. The 12-bit ADC provides sufficient resolution for medical signals. The Stop 2 mode (28 µA) enables long standby between measurements. The 512 KB Flash stores patient data and firmware updates. The Cortex-M4 FPU accelerates digital filtering algorithms. Compared to general-purpose MCUs, the STM32L452REY6TR offers lower power consumption and better analog performance, making it suitable for portable medical devices.
推薦
IoT Edge Nodes
IoT edge nodes require connectivity, processing, and low power. The STM32L452REY6TR provides multiple communication interfaces (USART, SPI, I2C, USB, CAN) and an 80 MHz core for edge computing. It can run lightweight ML models for anomaly detection. In a typical IoT node, the MCU collects sensor data, processes it locally, and sends only relevant information to the cloud via Wi-Fi or LoRa. The low-power modes allow battery-powered operation for months. The 512 KB Flash stores firmware and ML models. The TRNG enhances security for encrypted communication. The wide voltage range supports various power sources. Compared to higher-power MCUs, the STM32L452REY6TR reduces energy consumption by 50% while maintaining sufficient performance for edge AI.
推薦
Portable Test Equipment
Portable test equipment requires high accuracy and low power. The STM32L452REY6TR's 12-bit ADC and DAC enable precise measurements and signal generation. The 80 MHz core handles complex algorithms for signal processing. In a typical handheld multimeter, the MCU samples voltage and current, calculates RMS, and displays results on an LCD. The low-power modes extend battery life. The 512 KB Flash stores calibration data and firmware. The USB interface allows data logging to a PC. The wide temperature range ensures accuracy in various environments. Compared to 16-bit MCUs, the Cortex-M4 with FPU provides faster floating-point math for accurate calculations. The STM32L452REY6TR is a cost-effective solution for professional test equipment.
推薦
推薦產品摘要
工程參考資料，適用於 STM32L452REY6TR — 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 | STM32L452REY6 | STM32L452RET6 | STM32L452RCT6 | STM32L452REI6 |
|---|---|---|---|---|---|
| Package | UFBGA-64 (Y6) | UFBGA-64 (Y6) - same | LQFP-64 (T6) - different | LQFP-64 (T6) - different | UFBGA-64 (I6) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU |
| Maximum Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB | 512 KB |
| SRAM | 160 KB | 160 KB | 160 KB | 64 KB | 160 KB |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| Price (1000 pcs) | $4.16 | $4.16 | $4.20 | $3.50 | $4.50 |
主要差異化特點
- Ultra-low-power Stop 2 mode with 28 µA current (對比STM32L452RET6)
- UFBGA-64 package for compact designs (對比STM32L452RET6)
- 512 KB Flash and 160 KB SRAM (對比STM32L452RCT6)
設計說明
Decouple each VDD pin with a 100 nF ceramic capacitor placed as close as possible to the pin. Additionally, place a 4.7 µF capacitor on the main VDD rail. For VDDA, use a 1 µF capacitor and a ferrite bead to isolate analog noise. Ensure VREF+ is connected to VDDA through a low-pass filter for accurate ADC readings.
For the UFBGA-64 package, use a 4-layer PCB with a solid ground plane. Route high-speed signals (USB, SPI) with controlled impedance (90 ohms for USB). Keep crystal oscillator traces short and shielded. Follow ST's layout guidelines in AN4666 for optimal EMC performance.
Do not leave unused GPIO pins floating; configure them as analog inputs or outputs to reduce leakage. Ensure the NRST pin has a 100 nF capacitor to ground for reliable reset. When using low-power modes, disable unused peripherals and clocks to achieve the specified 28 µA Stop 2 current.
合規資訊
RoHS and REACH compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32L452REI6 (industrial grade) or other automotive-grade variants.
