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STMicroelectronics STM32F103C8T6TR
- Part No.:
- STM32F103C8T6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F103C8T6TR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,745
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Product details
Overview
STM32F103C8T6TR from STMicroelectronics is a medium-density Arm® Cortex®-M3 microcontroller with 64 KB Flash, 20 KB SRAM, 72 MHz CPU frequency, USB 2.0 full-speed interface, and CAN 2.0B Active support-used in industrial motor control, sensor gateway firmware, and embedded HMI systems.
For engineers reviewing the STM32F103C8T6TR datasheet, STM32F103C8T6TR pinout, STM32F103C8T6TR application, or STM32F103C8T6TR equivalent, key selection criteria include Flash/SRAM size, USB/CAN coexistence, 12-bit dual ADC timing, and LQFP48 package compatibility for cost-sensitive PCB layouts.
Technical Context
The device integrates an Arm Cortex-M3 core with nested vectored interrupt controller (NVIC), supporting up to 60 interrupts with programmable priority. Its clock tree includes dual oscillators (4–16 MHz HSE + 32 kHz LSE), PLL for 72 MHz system clock, and independent 40 kHz LSI for RTC backup.
DMA supports 7 channels across timers, ADCs, SPIs, I²Cs, and USARTs-enabling concurrent peripheral operation without CPU load. The dual 12-bit ADCs feature 1 µs conversion time, dual-sample-and-hold, and integrated temperature sensor with ±1.5°C accuracy over –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3, 72 MHz max - enables real-time deterministic execution of motor control loops and USB protocol stacks. |
| Flash Memory | 64 KB - sufficient for bootloader + application firmware with USB/CAN stack and safety monitoring logic. |
| SRAM | 20 KB - supports dual-buffered UART/USB DMA transfers and real-time sensor fusion algorithms. |
| ADC Resolution | 12-bit, 1 µs conversion - captures fast analog transients (e.g., current sensing in BLDC drives) with minimal latency. |
| USB Interface | Full-speed (12 Mbit/s), device-only - enables HID-class firmware updates and diagnostic communication without external PHY. |
| CAN Interface | CAN 2.0B Active - supports automotive-grade diagnostics and distributed control in industrial fieldbus networks. |
| Package | LQFP48 (7 × 7 mm, 0.5 mm pitch) - compatible with standard reflow processes and accessible for manual prototyping. |
Pinout & Package
LQFP48 package with exposed thermal pad (ECOPACK® compliant); 48-pin quad flat pack, 0.5 mm pitch, 7 × 7 mm body, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Separate analog/digital domains enable clean ADC reference and noise-immune digital operation. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 5 V-tolerant on most pins - simplifies level-shifting in mixed-voltage systems (e.g., interfacing with 5 V sensors). |
| PA11/PA12 | USB D+/D− | Dedicated full-speed USB transceiver - requires no external PHY or series resistors for basic device enumeration. |
| PB8/PB9 | CAN RX/TX | Direct connection to CAN transceiver - supports bit rates up to 1 Mbit/s with hardware filtering and message buffering. |
| PA0, PA1 | ADC1_IN0 / ADC1_IN1 | Default analog inputs for dual ADC mode - usable for simultaneous voltage/current measurement in power stage monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle multiplication & hardware division | Enables efficient fixed-point PID computation in motor control without software library overhead. |
| 7-channel DMA controller | Allows zero-CPU-overhead data movement between ADC buffers, USART FIFOs, and memory for continuous logging. |
| Three 16-bit general-purpose timers | Each supports 4-channel PWM output with complementary dead-time generation - suitable for 3-phase inverter gate drive. |
| Temperature sensor + 12-bit ADC | On-die thermal sensing calibrated at factory - enables real-time junction temperature monitoring for thermal derating in enclosed enclosures. |
| Serial wire debug (SWD) | 2-pin debug interface - reduces PCB footprint vs JTAG while retaining full flash programming and real-time trace capability. |
Applications
| Industrial Motor Control | Sensor Gateway |
|---|---|
Use Scenario: Closed-loop speed/torque control of 3-phase BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM generation with dead-time insertion, and current/voltage sampling via dual ADCs. Use Value: 72 MHz CPU + hardware math units achieve <10 µs loop cycle time; CAN interface enables integration into building automation networks. | Use Scenario: Aggregating RS-485 Modbus sensor data (temperature, humidity, CO₂) and forwarding via USB to host PC. IC Role / Device Role / Timing Role: Protocol translation engine with UART-to-USB bridging, buffer management, and CRC-16 checksum calculation. Use Value: Integrated USB device stack eliminates external bridge IC; 64 KB Flash accommodates multiple sensor drivers and configuration UI. |
| Embedded HMI Controller | Automotive Diagnostic Tool |
Use Scenario: Driving 320×240 monochrome LCD with touch overlay in medical device front panels. IC Role / Device Role / Timing Role: Graphics rendering engine using GPIO bit-banging or FSMC interface, plus capacitive touch scanning via ADC channels. Use Value: 20 KB SRAM supports double-buffered frame memory; low-power Stop mode extends battery life in portable devices. | Use Scenario: Handheld OBD-II scanner reading ECU fault codes and live parameters via CAN bus. IC Role / Device Role / Timing Role: CAN protocol handler with ISO 15765-2 (UDS) support, USB CDC interface for PC connectivity, and button/display I/O management. Use Value: Native CAN 2.0B + USB eliminates need for separate transceivers or USB-COM chips; LQFP48 allows compact handheld form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F103CBT6 | 64 KB Flash, same core/peripherals, but LQFP48 package with different pin mapping (e.g., USB D+/D− on PA11/PA12 same; CAN on PB8/PB9 same) | Identical use cases; minor PCB layout revision required due to alternate reset pin location (NRST on PB1 instead of PA0) | Select when needing identical functionality with verified board-level drop-in replacement in legacy designs. |
| NXP LPC1769FBD100 | ARM Cortex-M3, 512 KB Flash, 64 KB SRAM, no native USB device mode (requires external PHY), no CAN 2.0B | Suitable for high-code-footprint applications where USB host or Ethernet is prioritized over CAN/USB device | Choose only if larger Flash and Ethernet MAC are required; not recommended for CAN-centric or USB-device-only designs. |
Compared with STM32F103C8T6TR, STM32F103CBT6 offers identical peripheral set and pin-compatible layout with minor routing adjustments, while LPC1769 trades CAN/USB device integration for expanded memory and Ethernet-making it less suitable for compact, protocol-specific edge nodes.
Availability
STM32F103C8T6TR is available at Aetrix Electronics and suitable for industrial motor control, sensor gateway firmware, and embedded HMI systems requiring stable component supply across multi-year production cycles.
Supply support for STM32F103C8T6TR 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 STM32F1xx performance line, designed for cost-sensitive, real-time embedded applications demanding USB connectivity, CAN bus integration, and analog signal acquisition in harsh environments.
FAQ
What is the maximum operating temperature range for STM32F103C8T6TR?
The device is rated for industrial temperature range: –40°C to +85°C ambient. This is validated per datasheet Section 5.3.1 and supported by thermal characteristics in Table 63. Operation beyond +85°C risks SRAM retention loss and ADC offset drift; thermal derating above 70°C is recommended for long-term reliability in sealed enclosures.
Does STM32F103C8T6TR support USB device enumeration without external components?
Yes. It integrates a full-speed USB 2.0 transceiver with internal pull-up resistors on D+ and internal voltage regulator for USB PHY. Only a 1.5 kΩ pull-up on PA12 (D+) is required for enumeration; no external crystal, PHY, or level shifters are needed for basic HID or CDC device operation.
Can the dual 12-bit ADCs operate simultaneously on STM32F103C8T6TR?
Yes. The device supports dual-sampling mode where ADC1 and ADC2 convert concurrently on shared channels (e.g., PA0 and PA1). This is enabled via ADC_CR2.DUALMOD and provides synchronized sampling for phase-current reconstruction in motor control, with timing controlled by master ADC trigger source.
Is SWD debugging supported on all LQFP48 pins of STM32F103C8T6TR?
Yes. Serial Wire Debug uses SWDIO (PA13) and SWCLK (PA14) - both assigned to dedicated pins in LQFP48 package (pin 37 and 38). These pins are not multiplexed with other critical peripherals in default reset state, ensuring reliable debug access without pin conflict during development.
STM32F103C8T6TR 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:
- 64KB (64K 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:
STM32F103C8T6TR FAQ
1.How can I place an order for STM32F103C8T6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F103C8T6TR 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 STM32F103C8T6TR reliable?
The price and inventory of STM32F103C8T6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F103C8T6TR is usually 5 days.
3.What payment methods are accepted for STM32F103C8T6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F103C8T6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F103C8T6TR?
STM32F103C8T6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F103C8T6TR 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 STM32F103C8T6TR?
For technical support, including STM32F103C8T6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F103C8T6TR requirements.
6.How does Aetrix verify that STM32F103C8T6TR is sourced from the original manufacturer or authorized distributors?
All STM32F103C8T6TR 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 STM32F103C8T6TR meets industry standards.
7.What is the process for return or replacement of STM32F103C8T6TR?
All STM32F103C8T6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F103C8T6TR, 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 STM32F103C8T6TR part is unused and in its original packaging.
Return procedure for STM32F103C8T6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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