STM32F103VCT6 - 256KB Flash ARM Cortex-M3 MCU | STMicroelectronics
MPN: STM32F103VCT6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.8 | $78.00 |
| 100 | $6.9 | $690.00 |
| 500 | $6.2 | $3,100.00 |
| 1,000 | $5.6 | $5,600.00 |
Drop-in alternatives for STM32F103VCT6 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM32F103VET6
β Drop-Inπ Reference alternative (not in catalog)
STM32F103VCT6TR
β Drop-Inπ Reference alternative (not in catalog)
STM32F103VCT7
β Drop-Inπ Reference alternative (not in catalog)
STM32F105VCT6
β‘ Same Packageπ Reference alternative (not in catalog)
STM32F103VCT6 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M3 |
| Max Clock Frequency | 72 MHz |
| Flash Memory | 256 KB |
| SRAM | 48 KB |
| Supply Voltage | 2.0 V to 3.6 V |
| Package | LQFP100 (14x14 mm) |
| GPIO Pins | 80 |
| ADC | 3x 12-bit, 21 channels |
| DAC | 2x 12-bit |
| Timers | 4x 16-bit, 2x 32-bit |
| USART | 3 |
| I2C | 2 |
| SPI | 3 |
| USB | USB 2.0 Full-speed Device |
| CAN | 1 |
| SDIO | 1 |
| DMA | 12 channels |
| Operating Temperature | -40Β°C to +85Β°C |
| RoHS | Compliant |
STM32F103VCT6 Pin Configuration
| Pin 1 | VBAT β Battery backup supply for RTC |
| Pin 2 | PC13 β GPIO or RTC output |
| Pin 3 | PC14 β GPIO or OSC32_IN |
| Pin 4 | PC15 β GPIO or OSC32_OUT |
| Pin 5 | PD0 β GPIO or OSC_IN |
| Pin 6 | PD1 β GPIO or OSC_OUT |
| Pin 7 | NRST β Reset (active low) |
| Pin 8 | VSSA β Analog ground |
| Pin 9 | VDDA β Analog power supply |
| Pin 10 | PA0 β GPIO/ADC12_IN0 |
| Pin 11 | PA1 β GPIO/ADC12_IN1 |
| Pin 12 | PA2 β GPIO/USART2_TX/ADC12_IN2 |
| Pin 13 | PA3 β GPIO/USART2_RX/ADC12_IN3 |
| Pin 14 | PA4 β GPIO/SPI1_NSS/DAC_OUT1 |
| Pin 15 | PA5 β GPIO/SPI1_SCK/DAC_OUT2 |
| Pin 16 | PA6 β GPIO/SPI1_MISO/ADC12_IN4 |
| Pin 17 | PA7 β GPIO/SPI1_MOSI/ADC12_IN5 |
| Pin 18 | PB0 β GPIO/ADC12_IN8 |
| Pin 19 | PB1 β GPIO/ADC12_IN9 |
| Pin 20 | PB2 β GPIO/BOOT1 |
| Pin 21 | PB10 β GPIO/I2C2_SCL/USART3_TX |
| Pin 22 | PB11 β GPIO/I2C2_SDA/USART3_RX |
| Pin 23 | VSS_1 β Ground |
| Pin 24 | VDD_1 β Power supply |
| Pin 25 | PB12 β GPIO/SPI2_NSS |
| Pin 26 | PB13 β GPIO/SPI2_SCK |
| Pin 27 | PB14 β GPIO/SPI2_MISO |
| Pin 28 | PB15 β GPIO/SPI2_MOSI |
| Pin 29 | PD8 β GPIO/FSMC_D13 |
| Pin 30 | PD9 β GPIO/FSMC_D14 |
| Pin 31 | PD10 β GPIO/FSMC_D15 |
| Pin 32 | PD11 β GPIO/FSMC_A16 |
| Pin 33 | PD12 β GPIO/FSMC_A17 |
| Pin 34 | PD13 β GPIO/FSMC_A18 |
| Pin 35 | PD14 β GPIO/FSMC_D0 |
| Pin 36 | PD15 β GPIO/FSMC_D1 |
| Pin 37 | PE0 β GPIO/FSMC_NBL0 |
| Pin 38 | PE1 β GPIO/FSMC_NBL1 |
| Pin 39 | PE2 β GPIO/FSMC_A23 |
| Pin 40 | PE3 β GPIO/FSMC_A19 |
| Pin 41 | PE4 β GPIO/FSMC_A20 |
| Pin 42 | PE5 β GPIO/FSMC_A21 |
| Pin 43 | PE6 β GPIO/FSMC_A22 |
| Pin 44 | VSS_2 β Ground |
| Pin 45 | VDD_2 β Power supply |
| Pin 46 | PE7 β GPIO/FSMC_D4 |
| Pin 47 | PE8 β GPIO/FSMC_D5 |
| Pin 48 | PE9 β GPIO/FSMC_D6 |
| Pin 49 | PE10 β GPIO/FSMC_D7 |
| Pin 50 | PE11 β GPIO/FSMC_D8 |
| Pin 51 | PE12 β GPIO/FSMC_D9 |
| Pin 52 | PE13 β GPIO/FSMC_D10 |
| Pin 53 | PE14 β GPIO/FSMC_D11 |
| Pin 54 | PE15 β GPIO/FSMC_D12 |
| Pin 55 | PB3 β GPIO/JTDO/TRACESWO |
| Pin 56 | PB4 β GPIO/JNTRST |
| Pin 57 | PB5 β GPIO/I2C1_SMBA |
| Pin 58 | PB6 β GPIO/I2C1_SCL/USART1_TX |
| Pin 59 | PB7 β GPIO/I2C1_SDA/USART1_RX |
| Pin 60 | BOOT0 β Boot mode selection |
| Pin 61 | PB8 β GPIO/CAN_RX |
| Pin 62 | PB9 β GPIO/CAN_TX |
| Pin 63 | VSS_3 β Ground |
| Pin 64 | VDD_3 β Power supply |
| Pin 65 | PC0 β GPIO/ADC12_IN10 |
| Pin 66 | PC1 β GPIO/ADC12_IN11 |
| Pin 67 | PC2 β GPIO/ADC12_IN12 |
| Pin 68 | PC3 β GPIO/ADC12_IN13 |
| Pin 69 | PC4 β GPIO/ADC12_IN14 |
| Pin 70 | PC5 β GPIO/ADC12_IN15 |
| Pin 71 | PC6 β GPIO/TIM3_CH1 |
| Pin 72 | PC7 β GPIO/TIM3_CH2 |
| Pin 73 | PC8 β GPIO/TIM3_CH3 |
| Pin 74 | PC9 β GPIO/TIM3_CH4 |
| Pin 75 | PA8 β GPIO/USART1_CK/TIM1_CH1 |
| Pin 76 | PA9 β GPIO/USART1_TX/TIM1_CH2 |
| Pin 77 | PA10 β GPIO/USART1_RX/TIM1_CH3 |
| Pin 78 | PA11 β GPIO/USART1_CTS/USB_DM/TIM1_CH4 |
| Pin 79 | PA12 β GPIO/USART1_RTS/USB_DP/TIM1_ETR |
| Pin 80 | PA13 β GPIO/JTMS/SWDIO |
| Pin 81 | VSS_4 β Ground |
| Pin 82 | VDD_4 β Power supply |
| Pin 83 | PA14 β GPIO/JTCK/SWCLK |
| Pin 84 | PA15 β GPIO/JTDI |
| Pin 85 | PC10 β GPIO/USART3_TX/SDIO_D2 |
| Pin 86 | PC11 β GPIO/USART3_RX/SDIO_D3 |
| Pin 87 | PC12 β GPIO/USART3_CK/SDIO_CK |
| Pin 88 | PD2 β GPIO/SDIO_CMD |
| Pin 89 | PD3 β GPIO/FSMC_CLK |
| Pin 90 | PD4 β GPIO/FSMC_NOE |
| Pin 91 | PD5 β GPIO/FSMC_NWE |
| Pin 92 | PD6 β GPIO/FSMC_NWAIT |
| Pin 93 | PD7 β GPIO/FSMC_NE1 |
| Pin 94 | VSS_5 β Ground |
| Pin 95 | VDD_5 β Power supply |
| Pin 96 | PC0 β GPIO/ADC12_IN10 |
| Pin 97 | PC1 β GPIO/ADC12_IN11 |
| Pin 98 | PC2 β GPIO/ADC12_IN12 |
| Pin 99 | PC3 β GPIO/ADC12_IN13 |
| Pin 100 | PC4 β GPIO/ADC12_IN14 |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
STM32F103VCT6 is suitable for 6 applications: Motor Control, Industrial Automation, Medical Devices, Consumer Electronics, IoT Gateways, Automotive Electronics.
Motor Control
The STM32F103VCT6 is ideal for motor control applications due to its advanced timers (TIM1 and TIM8) that generate PWM signals with dead-time insertion, and its 12-bit ADCs that sample motor currents and voltages. The 72 MHz core ensures fast control loops, and the CAN interface allows for industrial networking. In a typical field-oriented control (FOC) setup, the MCU reads phase currents via ADCs, computes the rotor position, and updates PWM duty cycles in real-time. The high-resolution timers and DMA reduce CPU load, enabling smooth and efficient motor operation. Compared to lower-end MCUs, the STM32F103VCT6 provides sufficient computational power for sensorless control algorithms, making it a cost-effective choice for industrial drives, robotics, and automotive applications.
Recommended
Industrial Automation
In industrial automation, the STM32F103VCT6 serves as a central controller for PLCs, HMIs, and sensor interfaces. Its multiple USARTs, SPIs, and I2C interfaces enable communication with various industrial protocols like Modbus, CANopen, and Profibus. The device's robust GPIOs can directly interface with optocouplers, relays, and industrial sensors. The 256 KB Flash allows for storing complex control logic and communication stacks. The wide operating temperature range (-40Β°C to +85Β°C) ensures reliability in harsh factory environments. Additionally, the DMA controller offloads data transfer tasks, improving real-time performance. The STM32F103VCT6's rich peripheral set and mature ecosystem (STM32CubeMX, HAL libraries) accelerate development, making it a preferred choice for industrial product designers.
Recommended
Medical Devices
The STM32F103VCT6 is used in medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its low power consumption and multiple ADCs enable precise sensor readings, while the USB interface allows for data logging and connectivity to PCs. The device's deterministic interrupt handling ensures timely responses in critical applications. The 48 KB SRAM is sufficient for real-time data buffering, and the 256 KB Flash can store firmware updates. The STM32F103VCT6's compliance with medical standards (IEC 60601) is supported by its wide temperature range and robust design. Designers can leverage the STM32Cube ecosystem to implement safety features like watchdog timers and CRC checks. The MCU's small footprint and low cost make it suitable for portable and wearable medical devices.
Recommended
Consumer Electronics
In consumer electronics, the STM32F103VCT6 powers smart home devices, wearables, and audio equipment. Its USB interface enables easy connectivity to PCs and chargers, while its SPI and I2C interfaces connect to displays, sensors, and audio codecs. The device's low power modes (Sleep, Stop, Standby) extend battery life in portable devices. The 72 MHz core provides enough performance for user interfaces and audio processing. The STM32F103VCT6's rich peripheral set allows for a single-chip solution, reducing BOM cost. For example, in a smart thermostat, the MCU reads temperature sensors, drives an LCD, and communicates via Wi-Fi module over USART. The mature STM32 ecosystem simplifies firmware development, enabling rapid time-to-market for consumer products.
Recommended
IoT Gateways
The STM32F103VCT6 is an excellent choice for IoT gateways that aggregate data from multiple sensors and transmit it to the cloud. Its multiple USARTs and SPIs allow connection to various wireless modules (Wi-Fi, LoRa, Zigbee). The CAN interface enables integration with industrial networks. The 256 KB Flash can store communication protocols like MQTT and CoAP, while the 48 KB SRAM buffers sensor data. The device's low power consumption is crucial for battery-powered gateways. The STM32F103VCT6's DMA and interrupt handling ensure efficient data throughput. In a typical IoT gateway, the MCU collects data from sensors via I2C/SPI, processes it, and forwards it to a cloud server via a Wi-Fi module. The rich peripheral set and robust design make it a reliable and cost-effective solution for smart agriculture, smart city, and industrial IoT applications.
Recommended
Automotive Electronics
In automotive electronics, the STM32F103VCT6 is used in body control modules, infotainment systems, and engine control units. Its CAN interface is essential for in-vehicle networking, and its multiple timers and ADCs handle sensor inputs and actuator control. The device's wide temperature range (-40Β°C to +125Β°C for some variants) meets automotive requirements. The 256 KB Flash stores complex control algorithms, and the 48 KB SRAM supports real-time data processing. The STM32F103VCT6's robust design and AEC-Q100 qualification (for some variants) ensure reliability in harsh automotive environments. In a body control module, the MCU manages lighting, windows, and door locks, communicating over CAN. The STM32 ecosystem provides AUTOSAR support, facilitating automotive software development.
Recommended
Recommended Products Summary
Engineering reference data for STM32F103VCT6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F103VET6 | STM32F103VCT6TR | STM32F103VCT7 | STM32F103RCT6 | STM32F105VCT6 |
|---|---|---|---|---|---|---|
| Package | LQFP100 | LQFP100 | LQFP100 | LQFP100 | LQFP64 | LQFP100 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 256 KB | 512 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 48 KB | 64 KB | 48 KB | 48 KB | 48 KB | 64 KB |
| Max Clock Frequency | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz |
| GPIO Pins | 80 | 80 | 80 | 80 | 51 | 80 |
| USB | USB 2.0 Full-speed Device | USB 2.0 Full-speed Device | USB 2.0 Full-speed Device | USB 2.0 Full-speed Device | USB 2.0 Full-speed Device | USB 2.0 OTG FS |
| CAN | 1 | 1 | 1 | 1 | 1 | 2 |
| Operating Temperature | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +105Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C |
Key Differentiators
- Larger Flash and SRAM compared to STM32F103RCT6 (vs STM32F103RCT6)
- Pin-compatible upgrade path to STM32F103VET6 (vs STM32F103VET6)
- Extended temperature variant available (vs STM32F103VCT7)
Design Notes
Decouple each VDD pin with a 100nF ceramic capacitor placed as close to the pin as possible. Additionally, use a 4.7uF or larger bulk capacitor on the main power rail. For the analog supply (VDDA), use a 1uF capacitor and a ferrite bead to filter high-frequency noise, ensuring ADC accuracy. The VBAT pin should be connected to a backup battery or tied to VDD through a diode if not used.
For the LQFP100 package, ensure proper solder paste stencil design to avoid bridging. Use a 0.15mm stencil thickness and follow IPC-7525 guidelines. Provide a solid ground plane under the MCU to reduce EMI and improve thermal performance. Route high-speed signals (USB, SPI) with controlled impedance and keep traces short. For the crystal oscillator, place it close to the OSC_IN/OSC_OUT pins and add load capacitors as specified in the datasheet.
Ensure the BOOT0 pin is correctly configured for the desired boot mode. A common mistake is leaving BOOT0 floating, which can cause the MCU to boot into the system memory instead of Flash. Also, verify that the NRST pin has a proper reset circuit (10kΞ© pull-up and 100nF capacitor). Do not exceed the absolute maximum ratings for supply voltage (3.6V) and I/O pins (VDD+0.3V). Use the STM32CubeMX tool to configure pin multiplexing to avoid conflicts.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified for standard version; automotive grade variants may be available.
