STM32F105VCT7 - 72MHz Cortex-M3 MCU 256KB Flash | STMicroelectronics
料号： STM32F105VCT7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $11.85 | $11.85 |
| 10 | $10.65 | $106.50 |
| 100 | $9.45 | $945.00 |
| 500 | $8.5 | $4,250.00 |
| 1,000 | $7.65 | $7,650.00 |
STM32F105VCT7 概述
An MCU (microcontroller unit) is a single-chip computer containing a processor core, program memory, data memory, and integrated peripherals. The Cortex-M3 core is a 32-bit RISC architecture designed by ARM for embedded applications, offering deterministic interrupt handling, hardware division, and Thumb-2 instruction set support for high code density. The STM32F105 sits in ST's connectivity line positioned above the STM32F103 performance line and below the STM32F107, distinguished by USB OTG full-speed and CAN interfaces but without on-chip Ethernet MAC (which is exclusive to the F107 series).
Key features include 256 KB of embedded Flash with read-while-write support, 64 KB SRAM, 80 general-purpose I/O pins, two 12-bit ADCs with up to 16 channels, two 12-bit DACs, ten general-purpose timers, two I2C, three SPI, five USART, one USB OTG full-speed, two CAN 2.0B interfaces, and an SDIO interface. The internal 8 MHz RC oscillator with PLL provides the system clock, and the device supports 2.0 V to 3.6 V operating voltage.
Typical applications include industrial control, USB peripherals, CAN gateways, point-of-sale terminals, motor control interfaces, PLCs, home appliances, and any USB-device-class peripheral needing CAN connectivity. The wide peripheral set and LQFP-100 footprint make it a versatile choice for human-machine interface (HMI) panels, low-cost Ethernet bridges (using external PHY+MAC), and USB-to-CAN bridges.
When designing with this part, allocate decoupling capacitors near each VDD pin and route the HSE crystal traces symmetrically with short lengths to minimize EMI. The '7' suffix indicates the industrial temperature grade (-40C to +105C), suitable for most non-automotive applications.
This page synthesizes distributor pricing, drop-in alternatives from the STM32F105/107 family, and practical PCB design notes not consolidated in the manufacturer datasheet alone.
直接替换替代料： STM32F105VCT7 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM32F105VCT7 （相同外形与封装尺寸） ——差异在于 Timers, ADC, Package, DAC, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
STM32F107VCT7
✅ 直接替换📋 参考替代料（不在目录中）
STM32F105VCT6
✅ 直接替换✓ 有现货
$5.4 / 个
STM32F105VCT7TR
✅ 直接替换📋 参考替代料（不在目录中）
STM32F103VCT6
✅ 直接替换✓ 有现货
$2.68 / 个
查看数据手册 →GD32F303VCT6
✅ 直接替换📋 参考替代料（不在目录中）
STM32F105VCT7 最大额定值与电气特性
| Core | ARM Cortex-M3 32-bit RISC |
| 最大时钟频率 | 72 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM | 64 KB |
| Number of I/O Pins | 80 |
| 封装 | 100-LQFP (14x14 mm) |
| 电源电压 | 2.0 V to 3.6 V |
| 工作温度 | -40C to +105C (Grade 7) |
| ADC | 2 x 12-bit, up to 16 channels |
| DAC | 2 x 12-bit |
| Timers | 10 (general-purpose + advanced-control) |
| Communication Interfaces | 5 USART, 3 SPI, 2 I2C, 2 CAN, 1 USB OTG FS, 1 SDIO |
| 安装类型 | Surface Mount |
| Packaging | Tray |
| RoHS 状态 | Compliant |
STM32F105VCT7 引脚配置
| 引脚 1 | PE2 — GPIO PE2, TRACECLK (trace clock) |
| 引脚 2 | PE3 — GPIO PE3, TRACED0 |
| 引脚 3 | PE4 — GPIO PE4, TRACED1 |
| 引脚 4 | PE5 — GPIO PE5, TRACED2 |
| 引脚 5 | PE6 — GPIO PE6, TRACED3 |
| 引脚 6 | VBAT — Battery supply for RTC and backup registers |
| 引脚 7 | PC13 — GPIO PC13, TAMPER-RTC (anti-tamper / RTC) |
| 引脚 8 | PC14 — GPIO PC14, OSC32_IN (32.768 kHz crystal) |
| 引脚 9 | PC15 — GPIO PC15, OSC32_OUT (32.768 kHz crystal) |
| 引脚 10 | VSS_5 — Ground |
| 引脚 11 | VDD_5 — Digital supply voltage 2.0-3.6 V |
| 引脚 12 | OSC_IN — External clock input / HSE crystal input |
| 引脚 13 | OSC_OUT — HSE crystal output |
| 引脚 14 | NRST — Reset input (active low) |
| 引脚 15 | PC0 — GPIO PC0, ADC1_IN10 |
| 引脚 16 | PC1 — GPIO PC1, ADC1_IN11 |
| 引脚 17 | PC2 — GPIO PC2, ADC1_IN12 |
| 引脚 18 | PC3 — GPIO PC3, ADC1_IN13 |
| 引脚 19 | VSSA — Analog ground |
| 引脚 20 | VREF+ — ADC reference voltage positive |
| 引脚 21 | VDDA — Analog supply voltage 2.0-3.6 V |
| 引脚 22 | PA0 — GPIO PA0, WKUP, ADC1_IN0, TIM2_CH1 |
| 引脚 23 | PA1 — GPIO PA1, ADC1_IN1, TIM2_CH2 |
| 引脚 24 | PA2 — GPIO PA2, USART2_TX, ADC1_IN2, TIM2_CH3 |
| 引脚 25 | PA3 — GPIO PA3, USART2_RX, ADC1_IN3, TIM2_CH4 |
| 引脚 26 | VSS_4 — Ground |
| 引脚 27 | VDD_4 — Digital supply voltage 2.0-3.6 V |
| 引脚 28 | PA4 — GPIO PA4, SPI1_NSS, USART2_CK, ADC1_IN4 |
| 引脚 29 | PA5 — GPIO PA5, SPI1_SCK, ADC1_IN5, DAC_OUT2 |
| 引脚 30 | PA6 — GPIO PA6, SPI1_MISO, ADC1_IN6, TIM3_CH1, DAC_OUT1 |
| 引脚 31 | PA7 — GPIO PA7, SPI1_MOSI, ADC1_IN7, TIM3_CH2 |
| 引脚 32 | PB0 — GPIO PB0, ADC1_IN8, TIM3_CH3 |
| 引脚 33 | PB1 — GPIO PB1, ADC1_IN9, TIM3_CH4 |
| 引脚 34 | PB2 — GPIO PB2, BOOT1 |
| 引脚 35 | VSS_3 — Ground |
| 引脚 36 | VDD_3 — Digital supply voltage 2.0-3.6 V |
| 引脚 37 | PE7 — GPIO PE7, TIM1_ETR |
| 引脚 38 | PE8 — GPIO PE8, TIM1_CH1N |
| 引脚 39 | PE9 — GPIO PE9, TIM1_CH1 |
| 引脚 40 | PE10 — GPIO PE10, TIM1_CH2N |
| 引脚 41 | PE11 — GPIO PE11, TIM1_CH2 |
| 引脚 42 | PE12 — GPIO PE12, TIM1_CH3N |
| 引脚 43 | PE13 — GPIO PE13, TIM1_CH3 |
| 引脚 44 | PE14 — GPIO PE14, TIM1_CH4 |
| 引脚 45 | PE15 — GPIO PE15, TIM1_BKIN |
| 引脚 46 | PB10 — GPIO PB10, I2C2_SCL, USART3_TX |
| 引脚 47 | PB11 — GPIO PB11, I2C2_SDA, USART3_RX |
| 引脚 48 | VSS_2 — Ground |
| 引脚 49 | VDD_2 — Digital supply voltage 2.0-3.6 V |
| 引脚 50 | PB12 — GPIO PB12, SPI2_NSS, I2C2_SMBAI |
| 引脚 51 | PB13 — GPIO PB13, SPI2_SCK, USART3_CK |
| 引脚 52 | PB14 — GPIO PB14, SPI2_MISO, TIM1_CH2N |
| 引脚 53 | PB15 — GPIO PB15, SPI2_MOSI, TIM1_CH3N |
| 引脚 54 | PD8 — GPIO PD8, USART3_TX |
| 引脚 55 | PD9 — GPIO PD9, USART3_RX |
| 引脚 56 | PD10 — GPIO PD10 |
| 引脚 57 | PD11 — GPIO PD11 |
| 引脚 58 | PD12 — GPIO PD12, TIM4_CH1 |
| 引脚 59 | PD13 — GPIO PD13, TIM4_CH2 |
| 引脚 60 | PD14 — GPIO PD14, TIM4_CH3 |
| 引脚 61 | PD15 — GPIO PD15, TIM4_CH4 |
| 引脚 62 | VSS_1 — Ground |
| 引脚 63 | VDD_1 — Digital supply voltage 2.0-3.6 V |
| 引脚 64 | PC6 — GPIO PC6, TIM8_CH1, SDIO_D6 |
| 引脚 65 | PC7 — GPIO PC7, TIM8_CH2, SDIO_D7 |
| 引脚 66 | PC8 — GPIO PC8, TIM8_CH3, SDIO_D0 |
| 引脚 67 | PC9 — GPIO PC9, TIM8_CH4, SDIO_D1 |
| 引脚 68 | PA8 — GPIO PA8, USART1_CK, TIM1_CH1, MCO |
| 引脚 69 | PA9 — GPIO PA9, USART1_TX, TIM1_CH2 |
| 引脚 70 | PA10 — GPIO PA10, USART1_RX, TIM1_CH3 |
| 引脚 71 | PA11 — GPIO PA11, USB_DM, CAN1_RX |
| 引脚 72 | PA12 — GPIO PA12, USB_DP, CAN1_TX |
| 引脚 73 | PA13 — GPIO PA13, JTMS, SWDIO |
| 引脚 74 | VSS_6 — Ground |
| 引脚 75 | VDD_6 — Digital supply voltage 2.0-3.6 V |
| 引脚 76 | PA14 — GPIO PA14, JTCK, SWDCLK |
| 引脚 77 | PA15 — GPIO PA15, JTDI, TIM2_CH1 |
| 引脚 78 | PC10 — GPIO PC10, UART4_TX, SDIO_D2 |
| 引脚 79 | PC11 — GPIO PC11, UART4_RX, SDIO_D3 |
| 引脚 80 | PC12 — GPIO PC12, UART5_TX, SDIO_CK |
| 引脚 81 | PD0 — GPIO PD0, CAN1_RX, OSC_IN (remap) |
| 引脚 82 | PD1 — GPIO PD1, CAN1_TX, OSC_OUT (remap) |
| 引脚 83 | PD2 — GPIO PD2, TIM3_ETR, SDIO_CMD |
| 引脚 84 | PD3 — GPIO PD3, USART2_CTS |
| 引脚 85 | PD4 — GPIO PD4, USART2_RTS |
| 引脚 86 | PD5 — GPIO PD5, USART2_TX |
| 引脚 87 | PD6 — GPIO PD6, USART2_RX |
| 引脚 88 | PD7 — GPIO PD7, USART2_CK |
| 引脚 89 | PB3 — GPIO PB3, JTDO, TIM2_CH2, SPI1_SCK (remap) |
| 引脚 90 | PB4 — GPIO PB4, NJTRST, TIM3_CH1, SPI1_MISO (remap) |
| 引脚 91 | PB5 — GPIO PB5, TIM3_CH2, SPI1_MOSI (remap), I2C1_SMBAI |
| 引脚 92 | PB6 — GPIO PB6, I2C1_SCL, TIM4_CH1, USART1_TX |
| 引脚 93 | PB7 — GPIO PB7, I2C1_SDA, TIM4_CH2, USART1_RX |
| 引脚 94 | BOOT0 — Boot mode selection (0=main flash, 1=system memory bootloader) |
| 引脚 95 | PB8 — GPIO PB8, TIM4_CH3, CAN1_RX (remap) |
| 引脚 96 | PB9 — GPIO PB9, TIM4_CH4, CAN1_TX (remap) |
| 引脚 97 | PE0 — GPIO PE0, TIM4_ETR |
| 引脚 98 | PE1 — GPIO PE1 |
| 引脚 99 | VSS_7 — Ground |
| 引脚 100 | VDD_7 — Digital supply voltage 2.0-3.6 V |
典型应用
STM32F105VCT7 适用于 6 应用s: USB-to-CAN Industrial Bridge, Human-Machine Interface (HMI) Panel Controller, USB Barcode Scanner / HID Peripheral, Industrial Control PLC Module, Motor Control Interface Board, Medical Patient Monitoring Data Logger.
USB-to-CAN Industrial Bridge
The STM32F105VCT7's USB OTG full-speed peripheral combined with dual CAN 2.0B controllers (bxCAN) makes it ideal for USB-to-CAN gateway modules used in industrial automation, automotive diagnostics, and CANopen networks. The Cortex-M3 core handles USB CDC class enumeration and CAN frame transmission with deterministic latency, while the 64 KB SRAM buffers CAN traffic bursts. The 256 KB Flash is sufficient for USB stack (e.g., LibUSB) and CANopen/CANFestival protocols. Placed on a small PCB with USB Type-B connector and CAN transceiver (e.g., TJA1050), the part delivers a compact bridge solution operating at 72 MHz with 12 Mbps USB and 1 Mbit/s CAN simultaneously.
推荐
Human-Machine Interface (HMI) Panel Controller
The 100-pin LQFP package provides 80 GPIO pins, ample for driving TFT displays, keypads, status LEDs, and external peripherals in HMI panels. The STM32F105VCT7's two 12-bit ADCs support touch-screen digitizer scanning, while the SPI and SDIO peripherals connect to display controllers and microSD storage. Running at 72 MHz, the Cortex-M3 executes FreeRTOS-based UI frameworks smoothly with the 64 KB SRAM accommodating frame buffers. Designers typically pair the MCU with an external TFT controller over SPI and use the FSMC-less GPIO bit-banging for parallel LCD interfaces up to QVGA resolution.
推荐
USB Barcode Scanner / HID Peripheral
USB OTG full-speed with on-chip PHY enables direct USB device, host, or dual-role operation without external transceivers, ideal for barcode scanners, RFID readers, and HID peripherals. The STM32F105VCT7 runs USB HID class firmware at 72 MHz with minimal CPU overhead, leaving the 64 KB SRAM and 256 KB Flash available for application code, decode libraries, and buffer storage. The 12 Mbps USB FS bandwidth accommodates keyboard, mouse, barcode wedge, and custom HID reports with sub-1 ms latency. Designers can integrate a USB Type-C interface directly using PA11/PA12 pins with proper ESD protection.
推荐
Industrial Control PLC Module
With dual CAN, five USARTs, three SPI, and two I2C interfaces, the STM32F105VCT7 serves as the main processor for compact PLC modules and industrial control boards. The Cortex-M3 at 72 MHz executes IEC 61131-3 runtimes or ladder-logic interpreters, while the 80 GPIO pins drive relays, optocouplers, and isolated digital I/O. The wide 2.0-3.6 V supply tolerance accommodates industrial 24 V systems stepped down to 3.3 V via isolated DC-DC converters. The 105C operating temperature (Grade 7) supports factory-floor cabinets without additional cooling.
推荐
Motor Control Interface Board
The STM32F105VCT7's ten timers (including one advanced-control timer with complementary PWM outputs) provide ample PWM channels for brushless DC (BLDC) and stepper motor control interface boards. The 12-bit ADCs sample current and back-EMF signals at up to 1 MSPS, while the Cortex-M3 executes field-oriented control (FOC) algorithms at 72 MHz. Designers typically pair the MCU with external gate drivers (e.g., ST L6234) and use the CAN peripherals for multi-axis communication. The 64 KB SRAM limits FOC to single-axis or basic dual-axis implementations.
推荐
Medical Patient Monitoring Data Logger
Medical-grade patient monitoring peripherals (pulse oximeters, thermometers, glucose meters) leverage the STM32F105VCT7's USB OTG for data transfer to PCs, dual CAN for hospital network connectivity, and SDIO for local data storage on microSD cards. The 256 KB Flash stores firmware with embedded USB stack, while the 64 KB SRAM buffers continuous monitoring data. The Cortex-M3 deterministic interrupt response (12-cycle tail-chaining) ensures accurate sensor sampling timing. The -40C to +105C temperature range supports battery-powered portable medical devices.
推荐
推荐产品汇总
工程参考数据： STM32F105VCT7 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM32F107VCT7 | STM32F105VCT6 | STM32F105VCT7TR | STM32F103VCT6 | GD32F303VCT6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice |
| Package | LQFP-100 (14x14 mm) | LQFP-100 (14x14) - same | LQFP-100 (14x14) - same | LQFP-100 (14x14) - same | LQFP-100 (14x14) - same | LQFP-100 (14x14) - same |
| Core | Cortex-M3 @ 72 MHz | Cortex-M3 @ 72 MHz | Cortex-M3 @ 72 MHz | Cortex-M3 @ 72 MHz | Cortex-M3 @ 72 MHz | Cortex-M3 @ 120 MHz |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 48 KB | 48 KB |
| USB | USB OTG FS | USB OTG FS | USB OTG FS | USB OTG FS | USB FS (no OTG) | USB FS (no OTG) |
| CAN | 2 x CAN 2.0B | 2 x CAN 2.0B | 2 x CAN 2.0B | 2 x CAN 2.0B | 1 x CAN 2.0B | 1 x CAN 2.0B |
| Ethernet MAC | No | Yes (10/100 MII/RMII) | No | No | No | No |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C |
关键差异点
- USB OTG with dual CAN in connectivity line （对比 STM32F103VCT6)
- No on-chip Ethernet MAC for cost optimization （对比 STM32F107VCT7)
- Industrial temperature grade with Grade 7 rating （对比 STM32F105VCT6)
设计说明
The STM32F105VCT7 has 7 VDD pins (pins 11, 27, 36, 49, 63, 75, 100) and corresponding VSS pins that must each be decoupled with a 100 nF ceramic capacitor placed within 5 mm of each pin. Add a bulk 10 uF tantalum or ceramic capacitor near the regulator output. VDDA requires a separate 10 nF + 1 uF filter; tying VDDA directly to VDD without filtering degrades ADC SNR by 5-10 dB. VBAT must be tied to VDD if RTC/battery backup is unused, never left floating.
Route the HSE crystal traces (OSC_IN/OSC_OUT) symmetrically with traces under 5 mm length and a ground guard ring to prevent crosstalk with switching nodes. For USB, route PA11/PA12 as a 90-ohm differential pair with matched length within 2 mm and a ground plane underneath. The SDIO bus to microSD cards must have series 33-ohm resistors for signal integrity at 48 MHz clock. Keep the BOOT0 pin accessible via a test pad or jumper for firmware recovery.
Do not assume the F105 has Ethernet like the F107 - the F105 has the MAC registers reserved but no Ethernet peripheral. The '7' suffix indicates Grade 7 (-40C to +105C), not 125C - for 125C automotive use, look at STM32F105VCT7B or AEC-Q100 qualified parts. When migrating from STM32F103 firmware, verify bxCAN register initialization - the F105/F107 bxCAN has enhanced filter banks that differ from F103. USB OTG requires the PA11/PA12 pins to be at 3.3 V; lower VDD voltages disable USB PHY.
合规信息
RoHS compliant per ST product page. Industrial temperature grade (Grade 7, -40C to +105C), NOT AEC-Q100 qualified - for automotive designs use STM32F105VCT7B or qualified variants.
