STM32L452REY3TR STMicroelectronics Integrated Circuit (BGA) In Stock
Ultra-low-power 32-bit Arm Cortex-M4 MCU with FPU running at up to 48MHz, 512KB Flash, 160KB SRAM, integrated analog peripherals, and audio support in a compact WLCSP BGA package for IoT and wearable applications.
- Manufacturer
- STMicroelectronics
- Package
- BGA
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- STM32L452REY3TR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.2300(MOQ 5000)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STM32L452REY3TR?
- 48MHz Cortex-M4 core with FPU delivers 100DMIPS floating-point performance while drawing as low as 28µA/MHz in run mode for extended battery life
- 512KB Flash and 160KB SRAM provide ample storage for complex IoT firmware with OTA update buffers without external memory
- Integrated external SMPS support and multiple ultra-low-power modes enable sub-microampere standby current for coin-cell and energy-harvesting designs
What is STM32L452REY3TR used for?
STM32L452REY3TR targets battery-powered IoT sensor nodes, wearable health monitors, and portable industrial instruments where low active current and deep-sleep power consumption are critical design constraints. Its 48MHz Cortex-M4 with FPU handles sensor data fusion, audio codec processing, and real-time control tasks from a single chip, eliminating the need for a co-processor. The WLCSP package makes it ideal for space-constrained form factors such as smartwatch modules, medical patches, and compact industrial wireless nodes.
What are the specifications of STM32L452REY3TR?
| YTEOL | 9 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | YES |
| CPU Family | CORTEX-M4 |
| Clock Frequency-Max | 48MHz |
| DAC Channels | YES |
| DMA Channels | YES |
| Format | FLOATING POINT |
| Integrated Cache | YES |
| JESD-30 Code | R-PBGA-B64 |
| Low Power Mode | YES |
| Number of DMA Channels | 14 |
| Number of External Interrupts | 16 |
| Number of I/O Lines | 52 |
| Number of Timers | 8 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA64,8X8,16 |
| Package Shape | RECTANGULAR |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| RAM (bytes) | 163840 |
| RAM (words) | 163840 |
| ROM (words) | 524288 |
| ROM Programmability | FLASH |
| Speed | 80MHz |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 1.71V |
| Supply Voltage-Nom | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | BALL |
| Terminal Pitch | 0.4mm |
| Terminal Position | BOTTOM |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | BGA |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.25 |
| Country of Origin | Mainland China, Philippines, Taiwan |
Where can I find the STM32L452REY3TR datasheet?
STM32L452REY3TR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STM32L452REY3TR?
Compatible alternatives and drop-in replacements for STM32L452REY3TR:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 80MHz, CMOS, PBGA64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 80MHz, CMOS, PBGA64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 80MHz, CMOS, PBGA64
Frequently Asked Questions
What is the maximum clock speed and SRAM capacity of STM32L452REY3TR for a real-time sensor fusion task?
STM32L452REY3TR runs at up to 48MHz with 160KB of SRAM, which is sufficient to buffer raw sensor streams, run a Kalman filter or complementary filter, and maintain a BLE stack simultaneously. The Cortex-M4 FPU accelerates the floating-point matrix operations common in IMU sensor fusion without falling back to slower software emulation.
How does the external SMPS support in STM32L452REY3TR extend battery life compared to an LDO-only MCU?
STM32L452REY3TR can connect to an external switched-mode power supply (SMPS), reducing power conversion losses to under 5% compared to the 40-60% loss typical of linear regulators at low loads. This efficiency advantage lowers total system current in run mode from several milliamps down to hundreds of microamperes at 48MHz on a 3.0V battery, extending coin-cell runtime by a factor of 2 to 4 in always-on sensor applications.
Which package does STM32L452REY3TR use, and how does it compare to the LQFP-64 version for a compact PCB design?
STM32L452REY3TR comes in a WLCSP BGA package measuring approximately 3.2mm x 3.2mm with 0.4mm ball pitch, compared to the LQFP-64 package that requires roughly 10mm x 10mm of PCB area. The WLCSP package saves more than 90% of board area, making it the preferred choice for smartwatches, hearing aids, and other wearable designs where every square millimeter of PCB space is at a premium.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5000+ | $4.2300 | $21150.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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