STM32F107VCT6 - 256KB Flash 72MHz Cortex-M3 MCU | STMicroelectronics
MPN: STM32F107VCT6 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.5 | $11.50 |
| 10 | $10.2 | $102.00 |
| 100 | $8.95 | $895.00 |
| 500 | $7.8 | $3,900.00 |
| 1,000 | $6.95 | $6,950.00 |
STM32F107VCT6 Overview
What is a microcontroller? A microcontroller (MCU) is a compact integrated circuit that combines a processor core, program memory (Flash), data memory (SRAM), and programmable peripherals on a single silicon die, designed to govern a specific function within an embedded system. In the broader system hierarchy, a microcontroller sits above simple logic ICs but below application processors, offering a balance of deterministic real-time performance, low power consumption, and low cost for dedicated control tasks in industrial, consumer, and IoT products.
Key features include 256 KB Flash (256K x 8), 64 KB SRAM, an integrated 10/100 Mbps Ethernet MAC with dedicated DMA, USB 2.0 OTG full-speed with on-chip PHY, two CAN 2.0B controllers, five USARTs, three SPIs, two I2Cs, two 12-bit ADCs with up to 16 channels, and a wide 2.0V to 3.6V supply range. The device operates over -40°C to +85°C industrial temperature range and is offered in the connectivity-line variant of the STM32F1 family.
Technically, the STM32F107VCT6 is fabricated on ST's 90nm CMOS process, with single-cycle multiplication, hardware division, and a Nested Vectored Interrupt Controller (NVIC) supporting interrupt-driven design. The Ethernet MAC offloads packet handling through DMA, while the USB OTG full-speed interface integrates an on-chip transceiver, eliminating an external PHY for USB. Multiple low-power modes (Sleep, Stop, Standby) optimize energy consumption for battery-influenced designs.
Typical applications include Ethernet gateways and industrial fieldbus bridges, USB device/host peripherals, CAN bus nodes in factory automation and automotive subsystems, and embedded human-machine interface controllers. The combination of Ethernet, USB OTG, CAN, and rich serial peripherals in one package reduces BOM cost and board footprint for multi-protocol communication hubs.
When designing with this part, plan an external 25 MHz crystal for the Ethernet PHY reference, place 100 nF decoupling on each VDD/VDDA pin close to the package, and consider the boot-mode strap pin states during board bring-up. Verify Flash wait-state configuration when running the core above 48 MHz to ensure deterministic execution.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, supporting both new design-in and supply-chain risk mitigation.
Drop-in alternatives for STM32F107VCT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with STM32F107VCT6 (same form factor and footprint) — differing in Timers, ADC, Package, Operating Temperature, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STM32F105VCT7
✅ Drop-In✓ In Stock
$7.65 / Unit
View Datasheet →STM32F207VCT6
✅ Drop-In✓ In Stock
$7.3182 / Unit
View Datasheet →STM32F107VCT7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
GD32F107VCT6
✅ Drop-In📋 Reference alternative (not in catalog)
STM32F107VCT6 Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M3 32-bit RISC |
| Maximum Clock Frequency | 72 MHz |
| Flash Memory | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Supply Voltage Range | 2.0 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C |
| Package | 100-pin LQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Ethernet MAC | 10/100 Mbps with dedicated DMA |
| USB Interface | USB 2.0 OTG full-speed (on-chip PHY) |
| CAN Controllers | 2 x CAN 2.0B |
| USART / UART | 5 USARTs |
| SPI | 3 SPIs |
| I2C | 2 I2Cs |
| ADC | 2 x 12-bit, up to 16 channels |
| Timers | 10 timers (general-purpose + PWM) |
| Debug Interface | JTAG and SWD |
| Low-Power Modes | Sleep, Stop, Standby |
| RoHS Status | Compliant |
STM32F107VCT6 Pin Configuration
| Pin 1 | PE2/TRACECLK — GPIO/Trace clock |
| Pin 2 | PE3/TRACED0 — GPIO/Trace data 0 |
| Pin 3 | PE4/TRACED1 — GPIO/Trace data 1 |
| Pin 4 | PE5/TRACED2 — GPIO/Trace data 2 |
| Pin 5 | PE6/TRACED3 — GPIO/Trace data 3 |
| Pin 6 | VBAT — Battery supply for RTC |
| Pin 7 | PC13/TAMPER-RTC — GPIO/Tamper/RTC |
| Pin 8 | PC14/OSC32_IN — 32 kHz crystal in |
| Pin 9 | PC15/OSC32_OUT — 32 kHz crystal out |
| Pin 10 | VSS_5 — Ground |
| Pin 11 | VDD_5 — Digital supply |
| Pin 12 | OSC_IN — HSE crystal in |
| Pin 13 | OSC_OUT — HSE crystal out |
| Pin 14 | NRST — Reset (active low) |
| Pin 15 | PC0/ADC12_IN10 — GPIO/ADC input |
| Pin 16 | PC1/ADC12_IN11 — GPIO/ADC input |
| Pin 17 | PC2/ADC12_IN12 — GPIO/ADC input |
| Pin 18 | PC3/ADC12_IN11 — GPIO/ADC input |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Digital supply |
| Pin 21 | PA0/WKUP/USART2_CTS/ADC12_IN0/TIM2_CH1_ETR — GPIO/Wakeup/USART/ADC/Timer |
| Pin 22 | PA1/USART2_RTS/ADC12_IN1/TIM2_CH2 — GPIO/USART/ADC/Timer |
| Pin 23 | PA2/USART2_TX/ADC12_IN2/TIM2_CH3 — GPIO/USART TX/ADC/Timer |
| Pin 24 | PA3/USART2_RX/ADC12_IN3/TIM2_CH4 — GPIO/USART RX/ADC/Timer |
| Pin 25 | VSS — Ground |
| Pin 26 | VDD — Digital supply |
| Pin 27 | PA4/SPI1_NSS/USART2_CK/ADC12_IN4 — GPIO/SPI/USART/ADC |
| Pin 28 | PA5/SPI1_SCK/ADC12_IN5 — GPIO/SPI/ADC |
| Pin 29 | PA6/SPI1_MISO/ADC12_IN6/TIM3_CH1 — GPIO/SPI/ADC/Timer |
| Pin 30 | PA7/SPI1_MOSI/ADC12_IN7/TIM3_CH2 — GPIO/SPI/ADC/Timer |
| Pin 31 | PC4/ADC12_IN14 — GPIO/ADC |
| Pin 32 | PC5/ADC12_IN15 — GPIO/ADC |
| Pin 33 | PB0/ADC12_IN8/TIM3_CH3 — GPIO/ADC/Timer |
| Pin 34 | PB1/ADC12_IN9/TIM3_CH4 — GPIO/ADC/Timer |
| Pin 35 | PB2/BOOT1 — GPIO/Boot1 |
| Pin 36 | PE7 — GPIO |
| Pin 37 | PE8 — GPIO |
| Pin 38 | PE9 — GPIO |
| Pin 39 | PE10 — GPIO |
| Pin 40 | PE11 — GPIO |
| Pin 41 | PE12 — GPIO |
| Pin 42 | PE13 — GPIO |
| Pin 43 | PE14 — GPIO |
| Pin 44 | PE15 — GPIO |
| Pin 45 | PB10/I2C2_SCL/USART3_TX — GPIO/I2C/USART |
| Pin 46 | PB11/I2C2_SDA/USART3_RX — GPIO/I2C/USART |
| Pin 47 | VSS_1 — Ground |
| Pin 48 | VDD_1 — Digital supply |
| Pin 49 | PB12/SPI2_NSS/I2C2_SMBAI/USART3_CK/TIM1_BKIN — GPIO/SPI/I2C/USART/Timer |
| Pin 50 | PB13/SPI2_SCK/USART3_CTS/TIM1_CH1N — GPIO/SPI/USART/Timer |
| Pin 51 | PB14/SPI2_MISO/USART3_RTS/TIM1_CH2N — GPIO/SPI/USART/Timer |
| Pin 52 | PB15/SPI2_MOSI/TIM1_CH3N — GPIO/SPI/Timer |
| Pin 53 | PD8/USART3_TX — GPIO/USART |
| Pin 54 | PD9/USART3_RX — GPIO/USART |
| Pin 55 | PD10/USART3_CK — GPIO/USART |
| Pin 56 | PD11/USART3_CTS — GPIO/USART |
| Pin 57 | PD12/USART3_RTS/TIM4_CH1 — GPIO/USART/Timer |
| Pin 58 | PD13/TIM4_CH2 — GPIO/Timer |
| Pin 59 | PD14/TIM4_CH3 — GPIO/Timer |
| Pin 60 | PD15/TIM4_CH4 — GPIO/Timer |
| Pin 61 | PC6/TIM8_CH1 — GPIO/Timer |
| Pin 62 | PC7/TIM8_CH2 — GPIO/Timer |
| Pin 63 | PC8/TIM8_CH3 — GPIO/Timer |
| Pin 64 | PC9/TIM8_CH4 — GPIO/Timer |
| Pin 65 | PA8/USART1_CK/TIM1_CH1/MCO — GPIO/USART/Timer/MCO |
| Pin 66 | PA9/USART1_TX/TIM1_CH2 — GPIO/USART TX/Timer |
| Pin 67 | PA10/USART1_RX/TIM1_CH3 — GPIO/USART RX/Timer |
| Pin 68 | PA11/USB_DM/USART1_CTS/CAN1_RX/TIM1_CH4 — GPIO/USB/USART/CAN/Timer |
| Pin 69 | PA12/USB_DP/USART1_RTS/CAN1_TX/TIM1_ETR — GPIO/USB/USART/CAN/Timer |
| Pin 70 | PA13/JTMS/SWDIO — GPIO/JTAG/SWD data |
| Pin 71 | VSS_2 — Ground |
| Pin 72 | VDD_2 — Digital supply |
| Pin 73 | PA14/JTCK/SWDCLK — GPIO/JTAG/SWD clock |
| Pin 74 | PA15/JTDI/TIM2_CH1_ETR — GPIO/JTAG/Timer |
| Pin 75 | PC10/UART4_TX/USART3_TX — GPIO/UART/USART |
| Pin 76 | PC11/UART4_RX/USART3_RX — GPIO/UART/USART |
| Pin 77 | PC12/UART5_TX/USART3_CK — GPIO/UART/USART |
| Pin 78 | PD0/CAN1_RX — GPIO/CAN |
| Pin 79 | PD1/CAN1_TX — GPIO/CAN |
| Pin 80 | PD2/UART5_RX/TIM3_ETR — GPIO/UART/Timer |
| Pin 81 | PD3/USART2_CTS — GPIO/USART |
| Pin 82 | PD4/USART2_RTS — GPIO/USART |
| Pin 83 | PD5/USART2_TX — GPIO/USART |
| Pin 84 | PD6/USART2_RX — GPIO/USART |
| Pin 85 | PD7/USART2_CK — GPIO/USART |
| Pin 86 | PB3/JTDO/TRACESWO/SPI3_SCK — GPIO/JTAG/SPI |
| Pin 87 | PB4/NJTRST/SPI3_MISO — GPIO/JTAG/SPI |
| Pin 88 | PB5/I2C1_SMBAI/SPI3_MOSI — GPIO/I2C/SPI |
| Pin 89 | PB6/I2C1_SCL/TIM4_CH1/USART1_TX — GPIO/I2C/Timer/USART |
| Pin 90 | PB7/I2C1_SDA/TIM4_CH2/USART1_RX — GPIO/I2C/Timer/USART |
| Pin 91 | BOOT0 — Boot mode select |
| Pin 92 | PB8/TIM4_CH3/I2C1_SCL/CAN1_RX — GPIO/Timer/I2C/CAN |
| Pin 93 | PB9/TIM4_CH4/I2C1_SDA/CAN1_TX — GPIO/Timer/I2C/CAN |
| Pin 94 | PE0/TIM4_ETR — GPIO/Timer |
| Pin 95 | PE1 — GPIO |
| Pin 96 | VSS_3 — Ground |
| Pin 97 | VDD_3 — Digital supply |
| Pin 98 | PE2/TRACECLK — GPIO/Trace (alt) |
| Pin 99 | PE3/TRACED0 — GPIO/Trace (alt) |
| Pin 100 | VDD_4 — Digital supply |
Typical Applications
STM32F107VCT6 is suitable for 6 applications: Industrial Ethernet Gateway, USB OTG Device/Host Peripherals, CAN Bus Node / Fieldbus Bridge, USB-to-UART Bridge Module, HMI Touch Controller, Smart Energy Meter / Data Logger.
Industrial Ethernet Gateway
The STM32F107VCT6 fits industrial Ethernet gateways because its integrated 10/100 Mbps Ethernet MAC with dedicated DMA offloads packet processing from the Cortex-M3 core, sustaining wire-speed throughput without external MAC chips. With 256 KB Flash and 64 KB SRAM, designers can host TCP/IP stacks, Modbus/TCP, or PROFINET-lite libraries alongside application logic. Compared to a discrete MAC solution, the integrated DMA reduces CPU load by up to 60 percent, leaving headroom for gateway routing and protocol conversion. A 25 MHz crystal supplies the Ethernet reference clock to an external PHY.
Recommended
USB OTG Device/Host Peripherals
The STM32F107VCT6 is well-matched for USB device, host, and OTG peripherals because its USB 2.0 OTG full-speed interface integrates an on-chip PHY, eliminating external transceivers and reducing BOM cost. With 256 KB Flash, designers can host USB device class stacks (CDC, HID, MSC) or USB host stacks (mass storage, HID). The Cortex-M3 at 72 MHz provides deterministic response to USB control transfers. Compared to MCUs requiring external USB PHYs, the integrated solution saves board space and simplifies EMC compliance in industrial and consumer products.
Recommended
CAN Bus Node / Fieldbus Bridge
The STM32F107VCT6 suits CAN bus node and fieldbus bridge applications because its dual CAN 2.0B controllers support bit rates up to 1 Mbit/s with programmable filter banks. Combined with the integrated Ethernet MAC, designers can build CAN-to-Ethernet bridges for factory automation or automotive sub-networking. The 64 KB SRAM buffers multiple CAN messages while TCP/IP encapsulation is performed. According to the ST datasheet, bxCAN hardware accepts standard and extended IDs, simplifying gateway firmware. This bridges legacy CAN devices to modern Ethernet backbones in industrial control.
Recommended
USB-to-UART Bridge Module
The STM32F107VCT6 is ideal for USB-to-UART bridge modules because its USB OTG full-speed port plus five USARTs enable a single-chip solution for industrial debug adapters, programming dongles, and isolated serial servers. The 72 MHz Cortex-M3 handles USB CDC enumeration and high-throughput UART streaming simultaneously. Compared to dedicated bridge ICs, the F107's GPIO and timers allow additional features such as RS-485 direction control or status LEDs. With 256 KB Flash, custom protocols and bootloader functions fit without external memory.
Recommended
HMI Touch Controller
The STM32F107VCT6 supports HMI touch controller designs because its two 12-bit ADCs (up to 16 channels) can sample resistive touch-panel overlays, while its timers drive PWM backlight control. With 256 KB Flash, designers can implement graphics libraries, button debouncing, and communication to a host display processor. The Cortex-M3 at 72 MHz handles UI refresh rates above 60 Hz for small TFT panels. Compared to an external touch-controller IC, integrating this on the F107 reduces BOM and improves noise immunity by keeping analog signals on-chip.
Recommended
Smart Energy Meter / Data Logger
The STM32F107VCT6 suits smart energy meter and data-logging applications because its 12-bit ADC with up to 16 channels can sample voltage and current sensors simultaneously, while the Ethernet MAC pushes telemetry to a server. The 256 KB Flash stores calibration tables and firmware, and 64 KB SRAM buffers measurement frames before transmission. Low-power Stop and Standby modes allow battery-influenced metering designs to meet regulatory idle current budgets. Compared to discrete ADC + MCU solutions, integrating the ADC and MAC reduces board area for compact DIN-rail meter enclosures.
Recommended
Recommended Products Summary
Engineering reference data for STM32F107VCT6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F105VCT7 | STM32F207VCT6 | STM32F107VCT7 | GD32F107VCT6 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice |
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same |
| Core | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 |
| Max Clock Frequency | 72 MHz | 72 MHz | 120 MHz | 72 MHz | 108 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 128 KB | 64 KB | 64 KB |
| Ethernet MAC | 10/100 with DMA | 10/100 with DMA | 10/100 with DMA | 10/100 with DMA | 10/100 with DMA |
| USB OTG | USB 2.0 OTG FS | None (F105 lacks OTG) | USB 2.0 OTG FS + HS | USB 2.0 OTG FS | USB 2.0 OTG FS |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +105 C | -40 C to +85 C |
Key Differentiators
- Integrated USB 2.0 OTG full-speed with on-chip PHY (vs STM32F105VCT7)
- Higher 120 MHz clock headroom and 128 KB SRAM in same package (vs STM32F207VCT6)
- Pin-compatible second source from domestic Chinese vendor (vs GD32F107VCT6)
Design Notes
Decouple every VDD and VDDA pin with a 100 nF ceramic capacitor placed within 3 mm of the package pin, plus a bulk 4.7 uF or larger tantalum/ceramic on each supply rail. According to the ST datasheet, VDDA must be at or above VDD at all times; power-up sequencing of analog supplies ahead of digital supplies reduces ADC offset drift. Add a 10 uF bulk capacitor near the Ethernet PHY supply pin to suppress switching noise from the MII bus.
Configure Flash wait states (LATENCY bits in FLASH_ACR) before raising SYSCLK above 48 MHz, otherwise instruction fetches from Flash may fail under load. According to ST errata history, 72 MHz operation requires two wait states at 2.0-3.6 V. Also ensure BOOT0 strap pin state is correct before reset - high selects bootloader, low selects main Flash. Failing to check this is a common board-bring-up blocker.
Place the 25 MHz HSE crystal and load capacitors within 5 mm of OSC_IN/OSC_OUT pins, with a guard ground ring to isolate from noisy digital traces. Keep the Ethernet MII/RMII bus traces short (< 50 mm) and length-matched within 2 mm to preserve signal integrity at 100 Mbps. Per ST AN3070, route USB DP/DM as a 90-ohm differential pair; avoid crossing noisy power planes or nearby oscillator traces.
Compliance Information
RoHS compliant per ST product page. Industrial -40 C to +85 C commercial-grade. Not AEC-Q100 qualified - for AEC-Q100 qualified alternatives consult ST's automotive-grade STM32 variants.
