STM32F105VCT7 - 72MHz Cortex-M3 MCU 256KB Flash | STMicroelectronics
N.º de pieza: STM32F105VCT7 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 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 Descripción general
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.
Alternativas directas para STM32F105VCT7 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con STM32F105VCT7 (mismo factor de forma y huella) — difiere en Timers, ADC, Package, DAC, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
STM32F107VCT7
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
STM32F105VCT6
✅ Sustitución directa✓ En stock
$5.4 / unidad
STM32F105VCT7TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
STM32F103VCT6
✅ Sustitución directa✓ En stock
$2.68 / unidad
Ver hoja de datos →GD32F303VCT6
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
STM32F105VCT7 Valores máximos y características eléctricas
| Core | ARM Cortex-M3 32-bit RISC |
| Frecuencia de reloj máxima | 72 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM | 64 KB |
| Number of I/O Pins | 80 |
| Encapsulado | 100-LQFP (14x14 mm) |
| Tensión de alimentación | 2.0 V to 3.6 V |
| Temperatura de funcionamiento | -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 |
| Tipo de montaje | Surface Mount |
| Packaging | Tray |
| Estado RoHS | Compliant |
Configuración de pines de STM32F105VCT7
| Pin 1 | PE2 — GPIO PE2, TRACECLK (trace clock) |
| Pin 2 | PE3 — GPIO PE3, TRACED0 |
| Pin 3 | PE4 — GPIO PE4, TRACED1 |
| Pin 4 | PE5 — GPIO PE5, TRACED2 |
| Pin 5 | PE6 — GPIO PE6, TRACED3 |
| Pin 6 | VBAT — Battery supply for RTC and backup registers |
| Pin 7 | PC13 — GPIO PC13, TAMPER-RTC (anti-tamper / RTC) |
| Pin 8 | PC14 — GPIO PC14, OSC32_IN (32.768 kHz crystal) |
| Pin 9 | PC15 — GPIO PC15, OSC32_OUT (32.768 kHz crystal) |
| Pin 10 | VSS_5 — Ground |
| Pin 11 | VDD_5 — Digital supply voltage 2.0-3.6 V |
| Pin 12 | OSC_IN — External clock input / HSE crystal input |
| Pin 13 | OSC_OUT — HSE crystal output |
| Pin 14 | NRST — Reset input (active low) |
| Pin 15 | PC0 — GPIO PC0, ADC1_IN10 |
| Pin 16 | PC1 — GPIO PC1, ADC1_IN11 |
| Pin 17 | PC2 — GPIO PC2, ADC1_IN12 |
| Pin 18 | PC3 — GPIO PC3, ADC1_IN13 |
| Pin 19 | VSSA — Analog ground |
| Pin 20 | VREF+ — ADC reference voltage positive |
| Pin 21 | VDDA — Analog supply voltage 2.0-3.6 V |
| Pin 22 | PA0 — GPIO PA0, WKUP, ADC1_IN0, TIM2_CH1 |
| Pin 23 | PA1 — GPIO PA1, ADC1_IN1, TIM2_CH2 |
| Pin 24 | PA2 — GPIO PA2, USART2_TX, ADC1_IN2, TIM2_CH3 |
| Pin 25 | PA3 — GPIO PA3, USART2_RX, ADC1_IN3, TIM2_CH4 |
| Pin 26 | VSS_4 — Ground |
| Pin 27 | VDD_4 — Digital supply voltage 2.0-3.6 V |
| Pin 28 | PA4 — GPIO PA4, SPI1_NSS, USART2_CK, ADC1_IN4 |
| Pin 29 | PA5 — GPIO PA5, SPI1_SCK, ADC1_IN5, DAC_OUT2 |
| Pin 30 | PA6 — GPIO PA6, SPI1_MISO, ADC1_IN6, TIM3_CH1, DAC_OUT1 |
| Pin 31 | PA7 — GPIO PA7, SPI1_MOSI, ADC1_IN7, TIM3_CH2 |
| Pin 32 | PB0 — GPIO PB0, ADC1_IN8, TIM3_CH3 |
| Pin 33 | PB1 — GPIO PB1, ADC1_IN9, TIM3_CH4 |
| Pin 34 | PB2 — GPIO PB2, BOOT1 |
| Pin 35 | VSS_3 — Ground |
| Pin 36 | VDD_3 — Digital supply voltage 2.0-3.6 V |
| Pin 37 | PE7 — GPIO PE7, TIM1_ETR |
| Pin 38 | PE8 — GPIO PE8, TIM1_CH1N |
| Pin 39 | PE9 — GPIO PE9, TIM1_CH1 |
| Pin 40 | PE10 — GPIO PE10, TIM1_CH2N |
| Pin 41 | PE11 — GPIO PE11, TIM1_CH2 |
| Pin 42 | PE12 — GPIO PE12, TIM1_CH3N |
| Pin 43 | PE13 — GPIO PE13, TIM1_CH3 |
| Pin 44 | PE14 — GPIO PE14, TIM1_CH4 |
| Pin 45 | PE15 — GPIO PE15, TIM1_BKIN |
| Pin 46 | PB10 — GPIO PB10, I2C2_SCL, USART3_TX |
| Pin 47 | PB11 — GPIO PB11, I2C2_SDA, USART3_RX |
| Pin 48 | VSS_2 — Ground |
| Pin 49 | VDD_2 — Digital supply voltage 2.0-3.6 V |
| Pin 50 | PB12 — GPIO PB12, SPI2_NSS, I2C2_SMBAI |
| Pin 51 | PB13 — GPIO PB13, SPI2_SCK, USART3_CK |
| Pin 52 | PB14 — GPIO PB14, SPI2_MISO, TIM1_CH2N |
| Pin 53 | PB15 — GPIO PB15, SPI2_MOSI, TIM1_CH3N |
| Pin 54 | PD8 — GPIO PD8, USART3_TX |
| Pin 55 | PD9 — GPIO PD9, USART3_RX |
| Pin 56 | PD10 — GPIO PD10 |
| Pin 57 | PD11 — GPIO PD11 |
| Pin 58 | PD12 — GPIO PD12, TIM4_CH1 |
| Pin 59 | PD13 — GPIO PD13, TIM4_CH2 |
| Pin 60 | PD14 — GPIO PD14, TIM4_CH3 |
| Pin 61 | PD15 — GPIO PD15, TIM4_CH4 |
| Pin 62 | VSS_1 — Ground |
| Pin 63 | VDD_1 — Digital supply voltage 2.0-3.6 V |
| Pin 64 | PC6 — GPIO PC6, TIM8_CH1, SDIO_D6 |
| Pin 65 | PC7 — GPIO PC7, TIM8_CH2, SDIO_D7 |
| Pin 66 | PC8 — GPIO PC8, TIM8_CH3, SDIO_D0 |
| Pin 67 | PC9 — GPIO PC9, TIM8_CH4, SDIO_D1 |
| Pin 68 | PA8 — GPIO PA8, USART1_CK, TIM1_CH1, MCO |
| Pin 69 | PA9 — GPIO PA9, USART1_TX, TIM1_CH2 |
| Pin 70 | PA10 — GPIO PA10, USART1_RX, TIM1_CH3 |
| Pin 71 | PA11 — GPIO PA11, USB_DM, CAN1_RX |
| Pin 72 | PA12 — GPIO PA12, USB_DP, CAN1_TX |
| Pin 73 | PA13 — GPIO PA13, JTMS, SWDIO |
| Pin 74 | VSS_6 — Ground |
| Pin 75 | VDD_6 — Digital supply voltage 2.0-3.6 V |
| Pin 76 | PA14 — GPIO PA14, JTCK, SWDCLK |
| Pin 77 | PA15 — GPIO PA15, JTDI, TIM2_CH1 |
| Pin 78 | PC10 — GPIO PC10, UART4_TX, SDIO_D2 |
| Pin 79 | PC11 — GPIO PC11, UART4_RX, SDIO_D3 |
| Pin 80 | PC12 — GPIO PC12, UART5_TX, SDIO_CK |
| Pin 81 | PD0 — GPIO PD0, CAN1_RX, OSC_IN (remap) |
| Pin 82 | PD1 — GPIO PD1, CAN1_TX, OSC_OUT (remap) |
| Pin 83 | PD2 — GPIO PD2, TIM3_ETR, SDIO_CMD |
| Pin 84 | PD3 — GPIO PD3, USART2_CTS |
| Pin 85 | PD4 — GPIO PD4, USART2_RTS |
| Pin 86 | PD5 — GPIO PD5, USART2_TX |
| Pin 87 | PD6 — GPIO PD6, USART2_RX |
| Pin 88 | PD7 — GPIO PD7, USART2_CK |
| Pin 89 | PB3 — GPIO PB3, JTDO, TIM2_CH2, SPI1_SCK (remap) |
| Pin 90 | PB4 — GPIO PB4, NJTRST, TIM3_CH1, SPI1_MISO (remap) |
| Pin 91 | PB5 — GPIO PB5, TIM3_CH2, SPI1_MOSI (remap), I2C1_SMBAI |
| Pin 92 | PB6 — GPIO PB6, I2C1_SCL, TIM4_CH1, USART1_TX |
| Pin 93 | PB7 — GPIO PB7, I2C1_SDA, TIM4_CH2, USART1_RX |
| Pin 94 | BOOT0 — Boot mode selection (0=main flash, 1=system memory bootloader) |
| Pin 95 | PB8 — GPIO PB8, TIM4_CH3, CAN1_RX (remap) |
| Pin 96 | PB9 — GPIO PB9, TIM4_CH4, CAN1_TX (remap) |
| Pin 97 | PE0 — GPIO PE0, TIM4_ETR |
| Pin 98 | PE1 — GPIO PE1 |
| Pin 99 | VSS_7 — Ground |
| Pin 100 | VDD_7 — Digital supply voltage 2.0-3.6 V |
Aplicaciones típicas
STM32F105VCT7 es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para STM32F105VCT7 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- USB OTG with dual CAN in connectivity line (frente a STM32F103VCT6)
- No on-chip Ethernet MAC for cost optimization (frente a STM32F107VCT7)
- Industrial temperature grade with Grade 7 rating (frente a STM32F105VCT6)
Notas de diseño
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.
Información de cumplimiento
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.
