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STMicroelectronics STM32F103CBT6TR
- Part No.:
- STM32F103CBT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F103CBT6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:23,893
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Product details
Overview
STM32F103CBT6TR from STMicroelectronics is a medium-density performance-line Arm® Cortex®-M3 microcontroller featuring 128 KB Flash, 20 KB SRAM, 72 MHz CPU frequency, USB 2.0 full-speed interface, and CAN 2.0B Active support. It integrates dual 12-bit ADCs (1 µs conversion), seven timers including motor-control PWM with dead-time generation, and operates across 2.0–3.6 V supply for industrial motor control and embedded gateway applications.
For engineers reviewing the STM32F103CBT6TR datasheet, STM32F103CBT6TR pinout, STM32F103CBT6TR application, or STM32F103CBT6TR equivalent, key selection criteria include Flash/SRAM capacity, USB+CAN coexistence, LQFP48 package compatibility, and real-time peripheral count (e.g., 3× USART, 2× I²C, 2× SPI) in constrained-space designs.
Technical Context
The device implements an Arm Cortex-M3 core with Harvard architecture, single-cycle multiplication, hardware divide, and nested vectored interrupt controller (NVIC) supporting up to 68 interrupt channels. Its clock system combines HSE (4–16 MHz), HSI (8 MHz factory-trimmed), LSE (32.768 kHz), and PLL for flexible system timing.
DMA supports 7 channels with peripheral arbitration for concurrent transfers across timers, ADC, USART, SPI, and I²C - enabling zero-CPU-overhead data movement. The memory map includes bit-band aliasing, boot loader support via system memory, and CRC calculation unit for firmware integrity verification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3, 72 MHz max - enables deterministic real-time execution with 1.25 DMIPS/MHz performance at zero-wait-state Flash access. |
| Memory | 128 KB Flash + 20 KB SRAM - sufficient for complex protocol stacks (e.g., USB CDC + CANopen) and dual-bank firmware updates. |
| Analog Peripherals | 2× 12-bit ADCs, 1 µs conversion, 16-channel multiplexing - supports simultaneous sampling of motor phase currents and temperature feedback. |
| Communication Interfaces | USB 2.0 FS + CAN 2.0B + 3× USART + 2× I²C + 2× SPI - enables hybrid wired connectivity for fieldbus gateways and PC-interfaced diagnostics. |
| Timers | 7 timers: 3× general-purpose 16-bit, 1× advanced-control 16-bit (dead-time, emergency stop), 2× watchdogs, SysTick - meets IEC 60730 Class B functional safety timing requirements. |
| Supply Range | 2.0–3.6 V with POR/PDR/PVD - ensures robust operation across battery-backed and regulated industrial power rails. |
| Package & Pins | LQFP48 (7 × 7 mm), 37 I/Os, 5 V-tolerant on all except analog pins - simplifies level-shifting in mixed-voltage systems and eases PCB layout. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®, with exposed thermal pad for enhanced heat dissipation in continuous 72 MHz operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated analog/digital power domains with separate decoupling - critical for ADC accuracy and noise immunity in mixed-signal applications. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 37 total GPIOs, all mappable to 16 EXTI lines, 5 V-tolerant (except analog inputs) - enables direct interfacing with legacy 5 V logic and sensor interfaces. |
| PA9/PA10 | USART1 TX/RX | Hardware UART with LIN break detection and IrDA support - used for bootloader communication and field maintenance without external transceivers. |
| PA11/PA12 | USB_DM/USB_DP | Full-speed USB 2.0 physical layer with internal transceiver - eliminates need for external PHY, reducing BOM cost and board area. |
| PB8/PB9 | CAN_RX/CAN_TX | Dedicated CAN 2.0B bus interface with programmable filter banks - supports automotive and industrial network diagnostics and distributed control. |
| PA0–PA3, PB0–PB1 | ADC1_IN0–ADC1_IN5 | 6-channel analog input mapping to first ADC - allows simultaneous sampling of voltage, current, and temperature in motor drive feedback loops. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded CRC unit | Hardware-accelerated checksum generation for firmware image validation and secure OTA update integrity checks. |
| Temperature sensor | Integrated die-temperature sensor calibrated to ±1.5°C accuracy - enables thermal derating and overtemperature protection without external components. |
| Low-power modes | Sleep (1.2 mA), Stop (2.5 µA), Standby (1.3 µA) - extends battery life in portable HMI and wireless sensor node edge devices. |
| SWD debug interface | 2-pin Serial Wire Debug (SWD) with SWO trace output - enables real-time code profiling and non-intrusive debugging in space-constrained layouts. |
| 96-bit unique ID | Factory-programmed serial number per device - supports secure device authentication and license binding in OEM applications. |
Applications
| Industrial Motor Control | USB-CAN Bridge Gateway |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with Hall-effect or encoder feedback, current sensing, and thermal monitoring. IC Role / Device Role / Timing Role: Real-time motion controller executing FOC algorithm, managing PWM generation, ADC sampling, and fault handling within 10 µs latency budget. Use Value: Integrated advanced timer with dead-time insertion and emergency stop input eliminates external gate driver logic, reducing component count and failure points. |
Use Scenario: Protocol translation between USB-connected PC tools and CAN-based vehicle ECUs or industrial PLCs. IC Role / Device Role / Timing Role: Dual-interface bridge processor handling USB enumeration, CAN message filtering, and bidirectional frame buffering with timestamping. Use Value: Simultaneous USB FS and CAN 2.0B support in single LQFP48 package enables compact, low-cost diagnostic adapters without FPGA or dual-chip solutions. |
| Smart Sensor Node | Human-Machine Interface (HMI) |
Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and air quality data with local logging and USB configuration. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating I²C sensor data, running lightweight ML inference, and managing USB CDC virtual COM port. Use Value: 20 KB SRAM accommodates sensor buffer + firmware stack; ultra-low Stop-mode current (<2.5 µA) enables multi-year battery life with periodic wake-up. |
Use Scenario: Touch-enabled panel controlling HVAC, lighting, or machinery with local display, button inputs, and RS-485 backhaul. IC Role / Device Role / Timing Role: Main application processor driving GUI rendering, interpreting capacitive touch, and managing serial communication to host controllers. Use Value: 37 GPIOs support direct matrix keypad scanning and LED drivers; USB interface enables field firmware updates without opening enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F103C8T6 | 64 KB Flash, same package/peripherals - 64 KB limits complex USB+CAN stacks requiring >80 KB code space. | Suitable for cost-sensitive motor control without USB device stack or large protocol buffers. | Select when firmware footprint stays under 56 KB and no dual-bank update is required. |
| STM32F072CBT6 | Arm Cortex-M0+, 48 MHz, 128 KB Flash, USB FS but no CAN - lacks CAN 2.0B hardware, requires software emulation for CAN FD. | Better for USB-only edge nodes where CAN is absent; lower power in Sleep mode (0.9 µA vs 1.2 mA). | Choose only if CAN is not needed and lower active power consumption is prioritized over real-time determinism. |
Compared with STM32F103C8T6, the CBT6 offers 64 KB more Flash for dual-firmware images and USB descriptor tables; versus STM32F072CBT6, it delivers deterministic CAN timing and higher interrupt throughput essential for industrial control loops.
Availability
STM32F103CBT6TR is available at Aetrix Electronics and suitable for industrial motor control, USB-CAN gateway development, and smart sensor node production requiring stable component supply and long-term manufacturability.
Supply support for STM32F103CBT6TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in microcontrollers, power management, and automotive ICs with vertical manufacturing and broad industrial IP portfolio.
This part belongs to the STM32F1 Series - designed specifically for cost-effective, high-integration embedded applications demanding USB, CAN, and real-time control in compact packages like LQFP48.
FAQ
What is the maximum operating temperature range for STM32F103CBT6TR?
The STM32F103CBT6TR is rated for industrial temperature range: –40 °C to +85 °C ambient. Thermal characteristics in the datasheet confirm junction temperature limits up to +125 °C under specified power dissipation and PCB copper area, validated per JEDEC JESD51 standards.
Does STM32F103CBT6TR support external memory interfaces?
No - the STM32F103CBT6TR does not include FSMC (Flexible Static Memory Controller) or external bus interface. It relies solely on internal 128 KB Flash and 20 KB SRAM. External storage must be added via SPI flash or I²C EEPROM using standard peripheral drivers.
Can the USB interface operate without an external crystal?
Yes - the USB 2.0 full-speed interface uses the internal 48 MHz PLL clock derived from the 8 MHz HSI oscillator, eliminating the need for a dedicated 8 MHz or 12 MHz crystal. However, USB suspend/resume timing requires precise calibration of HSI via LSE or external trimming.
How many independent PWM outputs can be generated simultaneously?
Up to 16 independent PWM outputs are possible: 4 per general-purpose timer (3× timers = 12), plus 4 complementary outputs from the advanced-control timer (TIM1), all with configurable dead-time insertion and synchronization triggers.
STM32F103CBT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F1
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals:
- DMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT
- Number of I/O:
- 37
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 20K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F103CBT6TR FAQ
1.How can I place an order for STM32F103CBT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F103CBT6TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F103CBT6TR reliable?
The price and inventory of STM32F103CBT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F103CBT6TR is usually 5 days.
3.What payment methods are accepted for STM32F103CBT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F103CBT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F103CBT6TR?
STM32F103CBT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F103CBT6TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F103CBT6TR?
For technical support, including STM32F103CBT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F103CBT6TR requirements.
6.How does Aetrix verify that STM32F103CBT6TR is sourced from the original manufacturer or authorized distributors?
All STM32F103CBT6TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F103CBT6TR meets industry standards.
7.What is the process for return or replacement of STM32F103CBT6TR?
All STM32F103CBT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F103CBT6TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F103CBT6TR part is unused and in its original packaging.
Return procedure for STM32F103CBT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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