STM32L451RCI6TR STMicroelectronics Integrated Circuit (BGA) In Stock
STMicroelectronics STM32L451RCI6TR is an ultra-low-power 32-bit ARM Cortex-M4 microcontroller with FPU, running at up to 80 MHz and delivering 100 DMIPS from 512KB Flash and 160KB SRAM. It integrates ADC, DAC, DMA, and audio interfaces in a 64-pin BGA package. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- BGA
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- STM32L451RCI6TR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.8093(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ARM Cortex-M4 core with FPU at up to 80 MHz achieving 100 DMIPS for DSP-grade signal processing in power-sensitive applications
- 512KB Flash and 160KB SRAM supporting complex firmware with large data buffers in wearable and medical IoT designs
- Ultra-low-power design with multiple Stop modes consuming as little as 1 µA in Shutdown mode extending battery life
- Integrated 12-bit ADC, DAC, DMA, and audio SAI interface enabling analog sensing and audio processing without external codecs
- 64-pin BGA package enabling high I/O density in compact PCB footprints for space-constrained wearable and industrial modules
Applications
STM32L451RCI6TR is the core processor in medical wearable devices such as continuous glucose monitors and ECG patches, where its ultra-low-power Stop modes extending battery runtime to months while its Cortex-M4 FPU processes biosignal data in real time at 80 MHz. Industrial IoT sensor nodes and asset-tracking modules leverage its 512KB Flash for on-device machine-learning inference and its DMA engine to stream sensor data without waking the CPU. Smart home controllers and audio streaming accessories benefit from its integrated SAI audio interface and DAC, reducing external component count and PCB area.
Specifications
| 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) | 262144 |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STM32L451RCI6TR:
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 STM32L451RCI6TR achieve ultra-low power while still providing 100 DMIPS processing performance?
STM32L451RCI6TR uses STM's ultra-low-power process technology and multiple low-power modes, including Stop 2 mode at approximately 1.1 µA, to minimize idle current. When active at 80 MHz from 1.71V to 3.6V supply, the Cortex-M4 core delivers 100 DMIPS, and dynamic voltage scaling reduces active-mode current consumption compared to general-purpose MCUs at equivalent frequency.
For an ECG wearable requiring analog signal acquisition, how does the integrated ADC in STM32L451RCI6TR simplify the design?
The integrated 12-bit ADC with up to 16 channels samples analog biosignals at rates suitable for ECG at 1 kHz or accelerometer fusion at 200 Hz, eliminating a separate ADC IC. Combined with DMA transfers and the Cortex-M4 FPU, the device can filter and process 16-bit biosignal data in real time without requiring an external DSP, saving 2 to 3 components from the BOM.
When should STM32L451RCI6TR be chosen over STM32L4 devices with fewer than 160KB SRAM for firmware development?
STM32L451RCI6TR's 160KB SRAM is justified when firmware requires large data buffers exceeding 64KB, such as BLE audio streaming with multiple codec frames, TLS handshake buffers larger than 32KB, or on-device ML inference with neural network weight buffers. Selecting a variant with less SRAM forces external PSRAM, adding BOM cost and PCB routing complexity.
How does the BGA-64 package of STM32L451RCI6TR affect PCB design rules compared to an LQFP-64 alternative?
The 64-ball BGA uses a 0.5 mm pitch ball grid, requiring via-in-pad or fan-out routing with 0.1 mm trace widths on inner layers, compared to 0.4 mm pitch flat leads on LQFP-64 which route on a 2-layer board. BGA reduces package footprint to approximately 7 mm × 7 mm versus LQFP's 10 mm × 10 mm, benefiting designs where area is critical despite the higher PCB layer requirement.
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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+ | $4.4500 | $445.00 |
| 250+ | $4.2100 | $1052.50 |
| 500+ | $3.7800 | $1890.00 |
| 5000+ | $3.6336 | $18168.15 |
| 20000+ | $2.8431 | $56862.60 |
| 40000+ | $2.8093 | $112371.60 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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