STM32L451REI6TR STMicroelectronics Integrated Circuit (BGA) In Stock
STM32L451REI6TR is an ultra-low-power 32-bit Arm Cortex-M4 MCU with FPU, up to 512 KB Flash, 160 KB SRAM, and 100 DMIPS running at 48 MHz in a BGA package for audio and analog IoT applications.
- Manufacturer
- STMicroelectronics
- Package
- BGA
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- STM32L451REI6TR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.7577(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STM32L451REI6TR?
- Ultra-low-power Cortex-M4 core with FPU delivering 100 DMIPS at up to 48 MHz for computation-intensive IoT algorithms
- Up to 512 KB Flash and 160 KB SRAM supporting complex firmware and large data buffers in battery-constrained wearable applications
- Integrated DAC, ADC, DMA, and audio peripherals enabling multi-channel analog and audio signal processing without external codecs
What is STM32L451REI6TR used for?
The STM32L451REI6TR is designed for ultra-low-power IoT nodes, wearable health monitors, and industrial sensors requiring DSP capability with float-point acceleration at 48 MHz. Its combination of 512 KB Flash, 160 KB SRAM, and integrated audio plus analog peripherals makes it a capable single-chip solution for edge AI inference and multi-sensor data fusion in portable embedded systems.
What are the specifications of STM32L451REI6TR?
| Factory Lead Time | 12Weeks |
| 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 | S-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 | 12 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA64,8X8,20 |
| Package Shape | SQUARE |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| RAM (bytes) | 163840 |
| RAM (words) | 163840 |
| ROM (words) | 524288 |
| ROM Programmability | FLASH |
| Speed | 80MHz |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 1.8V |
| Supply Voltage-Nom | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | BALL |
| Terminal Pitch | 0.5mm |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| 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 STM32L451REI6TR datasheet?
STM32L451REI6TR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STM32L451REI6TR?
Compatible alternatives and drop-in replacements for STM32L451REI6TR:
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
How does the STM32L451REI6TR's Cortex-M4 FPU benefit audio and DSP workloads at 48 MHz?
The STM32L451REI6TR's Cortex-M4 FPU executes single-precision floating-point operations at 100 DMIPS with 48 MHz clock, enabling real-time audio filtering, FFT, and sensor fusion algorithms that would require multi-cycle software emulation on Cortex-M0 parts, reducing processing latency significantly.
What memory configuration does the STM32L451REI6TR provide for large firmware and runtime buffers?
The STM32L451REI6TR offers up to 512 KB of Flash program memory paired with 160 KB of SRAM, giving designers ample space for OTA-capable firmware images and large sensor data buffers in wearable health-monitoring or industrial gateway applications.
When is the BGA package of STM32L451REI6TR preferred over LQFP variants for board design?
The BGA package of the STM32L451REI6TR reduces PCB footprint significantly compared to 64-pin or 100-pin LQFP packages, making it the preferred option for ultra-compact wearable or implantable medical device boards where board area is constrained to under 10 mm x 10 mm.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
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 |
|---|---|---|
| 100+ | $4.9500 | $495.00 |
| 250+ | $4.7200 | $1180.00 |
| 500+ | $4.3000 | $2150.00 |
| 5000+ | $3.9900 | $19950.00 |
| 20000+ | $3.7772 | $75543.60 |
| 40000+ | $3.7577 | $150308.40 |
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.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit