STM32L452REY6TR - Ultra-low-power ARM Cortex-M4 MCU | STMicroelectronics
MPN: STM32L452REY6TR ✓ Hoạt độngSTM32L452REY6TR Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho STM32L452REY6TR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
STM32L452REY6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32L452REI6
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
STM32L452REY6TR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32L452REY6TR Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | UFBGA-64 (Y6) |
| Nhiệt độ hoạt động | -40C to +85C |
| DMA Channels | 12 |
| ADC Resolution | 12-bit |
| DAC Resolution | 12-bit |
| Communication Interfaces | USART, SPI, I2C, USB 2.0 FS, CAN |
| Dòng điện chế độ thấp điện năng | 28 µA (Stop 2) |
| Trạng thái RoHS | Compliant |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân STM32L452REY6TR
| Chân 1 | VDD — Digital power supply |
| Chân 2 | VSS — Digital ground |
| Chân 3 | PA0 — GPIO/ADC input |
| Chân 4 | PA1 — GPIO/ADC input |
| Chân 5 | PA2 — GPIO/USART2_TX |
| Chân 6 | PA3 — GPIO/USART2_RX |
| Chân 7 | PA4 — GPIO/SPI1_NSS |
| Chân 8 | PA5 — GPIO/SPI1_SCK |
| Chân 9 | PA6 — GPIO/SPI1_MISO |
| Chân 10 | PA7 — GPIO/SPI1_MOSI |
| Chân 11 | PB0 — GPIO/ADC input |
| Chân 12 | PB1 — GPIO/ADC input |
| Chân 13 | PB2 — GPIO |
| Chân 14 | PB3 — GPIO/SWO |
| Chân 15 | PB4 — GPIO |
| Chân 16 | PB5 — GPIO |
| Chân 17 | PB6 — GPIO/I2C1_SCL |
| Chân 18 | PB7 — GPIO/I2C1_SDA |
| Chân 19 | PB8 — GPIO/I2C1_SCL |
| Chân 20 | PB9 — GPIO/I2C1_SDA |
| Chân 21 | PB10 — GPIO/I2C2_SCL |
| Chân 22 | PB11 — GPIO/I2C2_SDA |
| Chân 23 | PB12 — GPIO/SPI2_NSS |
| Chân 24 | PB13 — GPIO/SPI2_SCK |
| Chân 25 | PB14 — GPIO/SPI2_MISO |
| Chân 26 | PB15 — GPIO/SPI2_MOSI |
| Chân 27 | PC0 — GPIO/ADC input |
| Chân 28 | PC1 — GPIO/ADC input |
| Chân 29 | PC2 — GPIO/ADC input |
| Chân 30 | PC3 — GPIO/ADC input |
| Chân 31 | PC4 — GPIO/ADC input |
| Chân 32 | PC5 — GPIO/ADC input |
| Chân 33 | PC6 — GPIO |
| Chân 34 | PC7 — GPIO |
| Chân 35 | PC8 — GPIO |
| Chân 36 | PC9 — GPIO |
| Chân 37 | PC10 — GPIO |
| Chân 38 | PC11 — GPIO |
| Chân 39 | PC12 — GPIO |
| Chân 40 | PC13 — GPIO/RTC |
| Chân 41 | PC14 — GPIO/OSC32_IN |
| Chân 42 | PC15 — GPIO/OSC32_OUT |
| Chân 43 | PH0 — OSC_IN |
| Chân 44 | PH1 — OSC_OUT |
| Chân 45 | NRST — Reset |
| Chân 46 | VDD — Digital power supply |
| Chân 47 | VSS — Digital ground |
| Chân 48 | VDDA — Analog power supply |
| Chân 49 | VSSA — Analog ground |
| Chân 50 | VREF+ — ADC reference voltage |
| Chân 51 | VREF- — ADC reference ground |
| Chân 52 | PA8 — GPIO/USART1_CK |
| Chân 53 | PA9 — GPIO/USART1_TX |
| Chân 54 | PA10 — GPIO/USART1_RX |
| Chân 55 | PA11 — GPIO/USB_DM |
| Chân 56 | PA12 — GPIO/USB_DP |
| Chân 57 | PA13 — SWDIO |
| Chân 58 | PA14 — SWCLK |
| Chân 59 | PA15 — GPIO/JTDI |
| Chân 60 | PB3 — GPIO/JTDO |
| Chân 61 | PB4 — GPIO/NJTRST |
| Chân 62 | PB5 — GPIO |
| Chân 63 | VDD — Digital power supply |
| Chân 64 | VSS — Digital ground |
Ứng dụng tiêu biểu
STM32L452REY6TR phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho STM32L452REY6TR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Ultra-low-power Stop 2 mode with 28 µA current (vsSTM32L452RET6)
- UFBGA-64 package for compact designs (vsSTM32L452RET6)
- 512 KB Flash and 160 KB SRAM (vsSTM32L452RCT6)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS and REACH compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32L452REI6 (industrial grade) or other automotive-grade variants.
