STM32F401CBY6TR STMicroelectronics Integrated Circuit (BGA) In Stock
STMicroelectronics STM32F401CBY6TR is a 32-bit Arm Cortex-M4F microcontroller in a 2.965 x 2.965 mm WLCSP-49 package with 128KB Flash and 64KB RAM. It features 36 I/O lines, ADC, DMA, and up to 84 MHz clock. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- BGA
- Pin Count
- 49
- Lifecycle
- OBSOLETE
- Datasheet
- STM32F401CBY6TR Datasheet PDF
- Category
- Integrated Circuit
- 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 STM32F401CBY6TR?
- Ultra-compact 2.965 x 2.965 mm WLCSP-49 package enabling miniaturized wearable and IoT device designs
- 32-bit Arm Cortex-M4F core with FPU and DSP instructions running at up to 84 MHz for efficient signal processing
- Integrated ADC with DMA and 36 I/O lines in a tiny footprint, eliminating need for external data acquisition components
What is STM32F401CBY6TR used for?
The STM32F401CBY6TR targets space-constrained wearable devices, IoT sensor nodes, and portable medical instruments where board real estate is critical. Its Cortex-M4F core with floating-point unit supports real-time sensor fusion, audio processing, and motor control algorithms in ultra-compact form factors. The WLCSP-49 package at 0.40 mm pitch is ideal for multi-layer PCBs in smartwatches, fitness trackers, and wireless connectivity modules.
What are the specifications of STM32F401CBY6TR?
| YTEOL | 0 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | YES |
| CPU Family | CORTEX-M4F |
| Clock Frequency-Max | 26MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | S-PBGA-B49 |
| Number of I/O Lines | 36 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA49,7X7,16 |
| Package Shape | SQUARE |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| RAM (bytes) | 65536 |
| ROM (words) | 131072 |
| ROM Programmability | FLASH |
| Speed | 84MHz |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3.3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | BALL |
| Terminal Pitch | 0.4mm |
| 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 |
Where can I find the STM32F401CBY6TR datasheet?
STM32F401CBY6TR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STM32F401CBY6TR?
Compatible alternatives and drop-in replacements for STM32F401CBY6TR:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4F CPU, 84MHz, CMOS, PBGA49
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 84MHz, CMOS, PBGA49
Frequently Asked Questions
How small is the STM32F401CBY6TR package, and for which ultra-compact designs is it appropriate?
The STM32F401CBY6TR comes in a WLCSP-49 package measuring only 2.965 x 2.965 mm at 0.40 mm ball pitch, making it one of the smallest STM32F4 variants available. This footprint is ideal for wearables, hearing aids, smartwatch modules, and miniaturized IoT nodes where every square millimeter of PCB area matters.
What processing performance does STM32F401CBY6TR deliver for sensor fusion in a wearable application?
The Cortex-M4F core in STM32F401CBY6TR runs at up to 84 MHz and includes a hardware floating-point unit (FPU) plus DSP extensions. This enables real-time sensor fusion of accelerometer, gyroscope, and magnetometer data at hundreds of samples per second, supporting step counting, gesture recognition, and orientation tracking in a single chip.
When would STM32F401CBY6TR be preferred over STM32F401CCU6 in a new design?
STM32F401CBY6TR is preferred over the QFN-packaged STM32F401CCU6 when the application demands a much smaller PCB footprint, since the WLCSP-49 body is only 2.965 x 2.965 mm versus approximately 5 x 5 mm for a 48-pin QFN. Both devices share the same Cortex-M4F core at 84 MHz, but the WLCSP variant saves significant board area at the cost of more advanced PCB assembly requirements.
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.
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