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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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.
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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.
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