STM32F105RBT6XXXTR STMicroelectronics Integrated Circuit (Quad Flat Packages) In Stock
STM32F105RBT6XXXTR is an STMicroelectronics Cortex-M3 32-bit microcontroller running at 72 MHz with 128 KB flash, USB OTG, CAN, and dual I2C/SPI interfaces in a 64-pin LQFP package. It integrates ADC, DAC, and DMA for mixed-signal embedded designs. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat Packages
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- STM32F105RBT6XXXTR 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 STM32F105RBT6XXXTR?
- 72 MHz ARM Cortex-M3 core with 128 KB flash and USB OTG full-speed host/device controller supports audio, HID, and CDC class applications without an external USB hub IC
- Dual CAN 2.0B interfaces enable direct connection to automotive and industrial CAN networks for multi-node control systems requiring simultaneous bus monitoring
- Hardware DMA controller with 12 channels offloads data movement between peripherals and SRAM, freeing the 32-bit CPU for application processing at full 72 MHz throughput
What is STM32F105RBT6XXXTR used for?
The STM32F105RBT6XXXTR is deployed in industrial gateway designs that bridge USB, CAN, and UART protocols, leveraging its dual CAN and USB OTG peripherals for simultaneous multi-bus operation. Motor-drive systems use its 12-bit ADC and DMA to sample current-sense signals at rates exceeding 1 MSPS while the CPU executes field-oriented control algorithms at 72 MHz. Consumer electronics and maker platforms adopt this MCU as a cost-effective USB host for keyboard and USB-flash device enumeration without requiring a dedicated USB controller IC.
What are the specifications of STM32F105RBT6XXXTR?
| YTEOL | 8.22 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | NO |
| CPU Family | CORTEX-M3 |
| Clock Frequency-Max | 50MHz |
| DAC Channels | YES |
| DMA Channels | YES |
| JESD-30 Code | S-PQFP-G64 |
| JESD-609 Code | e4 |
| Number of DMA Channels | 12 |
| Number of I/O Lines | 51 |
| Number of Timers | 10 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | QFP64,.47SQ,20 |
| Package Shape | SQUARE |
| Package Style | FLATPACK |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 32768 |
| ROM (words) | 131072 |
| ROM Programmability | FLASH |
| Speed | 72MHz |
| Supply Current-Max | 68mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3.3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| ## STM32F105RBT6XXXTR Alternates Showing results | Image |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.a.2 |
| HTS Code | 8542.31.00.25 |
Where can I find the STM32F105RBT6XXXTR datasheet?
STM32F105RBT6XXXTR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STM32F105RBT6XXXTR?
Compatible alternatives and drop-in replacements for STM32F105RBT6XXXTR:
suggested
suggested
suggested
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 72MHz, CMOS, PQFP64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 72MHz, CMOS, PQFP64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 72MHz, CMOS, PQFP64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 72MHz, CMOS, PQFP64
Frequently Asked Questions
For a USB-to-CAN gateway design, how do the dual CAN interfaces and USB OTG of the STM32F105RBT6XXXTR simplify firmware architecture?
The STM32F105RBT6XXXTR provides 2 independent CAN 2.0B controllers and a USB OTG full-speed peripheral that can operate simultaneously under DMA control, allowing the 72 MHz Cortex-M3 CPU to forward CAN frames to USB without blocking on peripheral polling. The DMA engine handles buffer transfers between CAN mailboxes and SRAM autonomously, enabling throughput above 1 Mbit/s per CAN channel and 12 Mbit/s USB full-speed without significant CPU overhead, which simplifies real-time gateway firmware considerably.
How much flash and RAM does the STM32F105RBT6XXXTR provide, and is it sufficient for a USB composite device with a CAN stack?
The STM32F105RBT6XXXTR integrates 128 KB of flash and 64 KB of SRAM. A typical USB CDC+CAN stack occupies approximately 30 KB to 50 KB of flash, leaving 78 KB to 98 KB for application code, and the 64 KB SRAM comfortably holds USB descriptor buffers of 4 KB, CAN frame queues of 8 KB, and application data structures within a single device without requiring external memory, keeping BOM cost low.
When would the STM32F105RBT6XXXTR be preferred over the STM32F103RBT6 in an industrial connectivity design?
The STM32F105RBT6XXXTR should be selected over the STM32F103RBT6 when the design requires USB OTG host capability in addition to USB device mode, or when 2 independent CAN channels are needed simultaneously, since the STM32F103 series provides only USB device/CAN sharing on the same silicon and lacks full OTG host support. The STM32F105 runs at the same 72 MHz Cortex-M3 core and offers the identical 64-pin LQFP footprint, so migrating from STM32F103 requires only a firmware update to enable the additional peripherals, with no PCB layout changes.
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