STM32F105VCT6 - 72MHz Cortex-M3 MCU, 256KB Flash, USB OTG | ST
MPN: STM32F105VCT6STM32F105VCT6 סקירה
A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory (typically Flash), data memory (SRAM), and a rich set of peripherals (timers, ADC, communication interfaces) onto one silicon die. MCUs sit at the heart of nearly every embedded system - from industrial PLCs and motor drives to consumer appliances and IoT edge nodes - executing deterministic real-time firmware that reads sensors and drives actuators. The Cortex-M3 architecture from ARM is a 32-bit RISC core designed for low-latency interrupt response, deterministic bit-manipulation, and high code density through the Thumb-2 instruction set.
Key features include a 72 MHz max CPU clock with single-cycle multiply and hardware divide, USB 2.0 Full-Speed OTG with on-chip PHY, two CAN 2.0B active interfaces, 10/100 Ethernet MAC (MII/RMII), up to 5 USARTs, 3 SPI, 2 I2C, a 1-mbx2C I2S, two 12-bit ADCs (1 Msps, 16 channels), one 12-bit DAC, plus an FSMC bus for external memory or parallel display. The 100-pin LQFP exposes 80+ GPIO across multiple 5V-tolerant banks, supporting flexible mixed-signal designs.
The part uses an internal 8 MHz RC and an optional 32.768 kHz LSE crystal for the RTC. Power is managed through three low-power modes (Sleep, Stop, Standby) with a typical run current of ~30 mA at 72 MHz and stop current below 50 uA. The 2.0V to 3.6V supply range supports both 3.3V and battery-backed designs.
Typical applications include industrial gateways with USB or CAN, USB HID/COM port devices, RS485/CAN industrial sensor nodes, motor control boards using CAN and timers, point-of-sale terminals, low-cost Ethernet-equipped embedded nodes, and human-machine interface panels driving LCDs through FSMC. Designers pick the F105 over the F103 when they need USB OTG host capability, dual CAN, or an integrated Ethernet MAC on the same die.
When designing with this MCU, allocate the FSMC bus carefully if you add an external SRAM or NOR Flash, since pin remapping can clash with timers and USARTs. Use ST's STM32CubeMX to validate alternate-function mapping before final layout, and check the errata sheet for early-revision silicon behavior on the Ethernet MAC and USB OTG PHY.
This page synthesizes distributor pricing, parametric alternatives, and practical design notes beyond the manufacturer datasheet to support BOM decisions and second-source planning.
חלופות תחליף ישיר עבור STM32F105VCT6 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם STM32F105VCT6 (אותו גורם צורה וטביעת רגל) — שונים ב Timers, ADC, Package, USB, I2C.
STM32F105RCT6
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←STM32F107VCT6
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←STM32F103VCT6
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←GD32F105VCT6
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←STM32F105VCT7
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←STM32F105VBT6
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
STM32F105VCT6 דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | ARM Cortex-M3 (32-bit) |
| Core Max Frequency | 72 MHz |
| Program Memory (Flash) | 256 KB |
| SRAM | 64 KB |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| מארז | LQFP-100 (14x14 mm) |
| טמפרטורת פעולה | -40 C to +85 C |
| GPIO Count | 80+ |
| USB | USB 2.0 Full-Speed OTG with on-chip PHY |
| CAN | 2x CAN 2.0B active |
| Ethernet | 10/100 MAC (MII/RMII) - external PHY required |
| USART/UART | 5 channels |
| SPI | 3 channels |
| I2C | 2 channels |
| ADC | 2x 12-bit, 1 Msps, 16 channels |
| DAC | 1x 12-bit |
| Timers | Advanced-control, general-purpose, basic, SysTick, watchdog |
| FSMC | Yes - external memory/display bus |
| DMA | 12 channels |
| סטטוס RoHS | Compliant |
תצורת פינים של STM32F105VCT6
| פין 1 | PE2 — GPIO PE2 / TRACECLK |
| פין 2 | PE3 — GPIO PE3 / TRACED0 |
| פין 3 | PE4 — GPIO PE4 / TRACED1 |
| פין 4 | PE5 — GPIO PE5 / TRACED2 |
| פין 5 | PE6 — GPIO PE6 / TRACED3 |
| פין 6 | VBAT — RTC backup supply |
| פין 7 | PC13 — GPIO PC13 / Tamper-RTC |
| פין 8 | PC14 — GPIO PC14 / OSC32_IN |
| פין 9 | PC15 — GPIO PC15 / OSC32_OUT |
| פין 10 | VSS_1 — Ground |
| פין 11 | VDD_1 — Digital supply 2.0-3.6 V |
| פין 12 | OSC_IN — HSE crystal oscillator input |
| פין 13 | OSC_OUT — HSE crystal oscillator output |
| פין 14 | NRST — Reset (active low) |
| פין 15 | PC0 — GPIO PC0 / ADC12_IN10 |
| פין 16 | PC1 — GPIO PC1 / ADC12_IN11 |
| פין 17 | PC2 — GPIO PC2 / ADC12_IN12 |
| פין 18 | PC3 — GPIO PC3 / ADC12_IN13 |
| פין 19 | VSSA — Analog ground |
| פין 20 | VDDA — Analog supply 2.0-3.6 V |
| פין 21 | PA0 — GPIO PA0 / WKUP / ADC12_IN0 / TIM2_CH1 |
| פין 22 | PA1 — GPIO PA1 / ADC12_IN1 / TIM2_CH2 |
| פין 23 | PA2 — GPIO PA2 / ADC12_IN2 / TIM2_CH3 / USART2_TX |
| פין 24 | PA3 — GPIO PA3 / ADC12_IN3 / TIM2_CH4 / USART2_RX |
| פין 25 | VSS_2 — Ground |
| פין 26 | VDD_2 — Digital supply 2.0-3.6 V |
| פין 27 | PA4 — GPIO PA4 / ADC12_IN4 / SPI1_NSS / USART2_CK |
| פין 28 | PA5 — GPIO PA5 / ADC12_IN5 / SPI1_SCK / DAC_OUT1 |
| פין 29 | PA6 — GPIO PA6 / ADC12_IN6 / SPI1_MISO / TIM3_CH1 |
| פין 30 | PA7 — GPIO PA7 / ADC12_IN7 / SPI1_MOSI / TIM3_CH2 |
| פין 31 | PC4 — GPIO PC4 / ADC12_IN14 |
| פין 32 | PC5 — GPIO PC5 / ADC12_IN15 |
| פין 33 | PB0 — GPIO PB0 / ADC12_IN8 / TIM3_CH3 |
| פין 34 | PB1 — GPIO PB1 / ADC12_IN9 / TIM3_CH4 |
| פין 35 | PB2 — GPIO PB2 / BOOT1 |
| פין 36 | PE7 — GPIO PE7 |
| פין 37 | PE8 — GPIO PE8 / TIM1_CH1N |
| פין 38 | PE9 — GPIO PE9 / TIM1_CH1 |
| פין 39 | PE10 — GPIO PE10 / TIM1_CH2N |
| פין 40 | PE11 — GPIO PE11 / TIM1_CH2 |
| פין 41 | PE12 — GPIO PE12 / TIM1_CH3N |
| פין 42 | PE13 — GPIO PE13 / TIM1_CH3 |
| פין 43 | PE14 — GPIO PE14 / TIM1_CH4 |
| פין 44 | PE15 — GPIO PE15 / TIM1_BKIN |
| פין 45 | PB10 — GPIO PB10 / I2C2_SCL / USART3_TX |
| פין 46 | PB11 — GPIO PB11 / I2C2_SDA / USART3_RX |
| פין 47 | VSS_3 — Ground |
| פין 48 | VDD_3 — Digital supply 2.0-3.6 V |
| פין 49 | PB12 — GPIO PB12 / SPI2_NSS / I2S2_WS |
| פין 50 | PB13 — GPIO PB13 / SPI2_SCK / I2S2_CK |
| פין 51 | PB14 — GPIO PB14 / SPI2_MISO / TIM1_CH2N |
| פין 52 | PB15 — GPIO PB15 / SPI2_MOSI / TIM1_CH3N |
| פין 53 | PD8 — GPIO PD8 / USART3_TX / ETH_RMII_RX_DV |
| פין 54 | PD9 — GPIO PD9 / USART3_RX / ETH_RMII_CRS_DV |
| פין 55 | PD10 — GPIO PD10 |
| פין 56 | PD11 — GPIO PD11 |
| פין 57 | PD12 — GPIO PD12 / TIM4_CH1 |
| פין 58 | PD13 — GPIO PD13 / TIM4_CH2 |
| פין 59 | PD14 — GPIO PD14 / TIM4_CH3 |
| פין 60 | PD15 — GPIO PD15 / TIM4_CH4 |
| פין 61 | PC6 — GPIO PC6 / I2S2_MCK / TIM3_CH1 |
| פין 62 | PC7 — GPIO PC7 / I2S2_CK / TIM3_CH2 |
| פין 63 | PC8 — GPIO PC8 / TIM3_CH3 |
| פין 64 | PC9 — GPIO PC9 / TIM3_CH4 |
| פין 65 | PA8 — GPIO PA8 / USART1_CK / TIM1_CH1 / MCO |
| פין 66 | PA9 — GPIO PA9 / USART1_TX / TIM1_CH2 |
| פין 67 | PA10 — GPIO PA10 / USART1_RX / TIM1_CH3 |
| פין 68 | PA11 — GPIO PA11 / USART1_CTS / CAN1_RX / USB_DM |
| פין 69 | PA12 — GPIO PA12 / USART1_RTS / CAN1_TX / USB_DP |
| פין 70 | PA13 — GPIO PA13 / JTMS / SWDIO |
| פין 71 | VSS_4 — Ground |
| פין 72 | VDD_4 — Digital supply 2.0-3.6 V |
| פין 73 | PA14 — GPIO PA14 / JTCK / SWCLK |
| פין 74 | PA15 — GPIO PA15 / JTDI / TIM2_CH1 / SPI1_NSS |
| פין 75 | PC10 — GPIO PC10 / UART4_TX / SPI3_SCK |
| פין 76 | PC11 — GPIO PC11 / UART4_RX / SPI3_MISO |
| פין 77 | PC12 — GPIO PC12 / UART5_TX / SPI3_MOSI |
| פין 78 | PD0 — GPIO PD0 / OSC_IN |
| פין 79 | PD1 — GPIO PD1 / OSC_OUT |
| פין 80 | PD2 — GPIO PD2 / TIM3_ETR / UART5_RX |
| פין 81 | PD3 — GPIO PD3 / USART2_CTS |
| פין 82 | PD4 — GPIO PD4 / USART2_RTS |
| פין 83 | PD5 — GPIO PD5 / USART2_TX |
| פין 84 | PD6 — GPIO PD6 / USART2_RX |
| פין 85 | PD7 — GPIO PD7 / USART2_CK |
| פין 86 | PB3 — GPIO PB3 / JTDO / SPI3_SCK / TIM2_CH2 |
| פין 87 | PB4 — GPIO PB4 / NJTRST / SPI3_MISO / TIM3_CH1 |
| פין 88 | PB5 — GPIO PB5 / I2C1_SMBAI / SPI3_MOSI / TIM3_CH2 |
| פין 89 | PB6 — GPIO PB6 / I2C1_SCL / TIM4_CH1 |
| פין 90 | PB7 — GPIO PB7 / I2C1_SDA / TIM4_CH2 |
| פין 91 | BOOT0 — Boot mode select |
| פין 92 | PB8 — GPIO PB8 / TIM4_CH3 |
| פין 93 | PB9 — GPIO PB9 / TIM4_CH4 |
| פין 94 | PE0 — GPIO PE0 / TIM4_ETR |
| פין 95 | PE1 — GPIO PE1 |
| פין 96 | VSS_5 — Ground |
| פין 97 | VDD_5 — Digital supply 2.0-3.6 V |
| פין 98 | PE2 — GPIO PE2 (alternate location, trace clock) |
| פין 99 | PE3 — GPIO PE3 (alternate location) |
| פין 100 | VSS_6 — Ground |
יישומים טיפוסיים
STM32F105VCT6 מתאים עבור 6 יישוםs: Industrial Gateway with USB OTG + Dual CAN, USB HID / CDC / Mass-Storage Host Device, CAN-Based Motor Control / Sensor Node, Point-of-Sale / Kiosk Terminal, LCD HMI Panel Using FSMC, IoT Edge Sensor with USB Diagnostics Port.
Industrial Gateway with USB OTG + Dual CAN
The STM32F105VCT6's USB OTG Full-Speed host, dual CAN 2.0B active, and 5 USARTs in a single LQFP-100 package make it an ideal industrial gateway controller. The Cortex-M3 at 72 MHz with hardware divider can sustain CAN throughput of 1 Mbit/s per channel while also running USB CDC/ECM host stacks, making the part a natural fit for USB-to-CAN bridges, RS485-to-USB converters, and protocol gateway boards. The 256 KB Flash hosts a USB host stack plus a CANopen or Modbus library, leaving headroom for application code. Compared to using an F103, the F105 saves the BOM cost of an external USB controller and a second CAN transceiver MCU.
מומלץ
USB HID / CDC / Mass-Storage Host Device
The integrated USB 2.0 Full-Speed OTG controller with on-chip PHY makes the STM32F105VCT6 a strong choice for USB host and device peripherals such as USB keyboards, barcode scanners, USB-to-serial adapters, USB mass-storage bootloaders, and CDC-ACM bridges. The 72 MHz Cortex-M3 can sustain USB Full-Speed (12 Mbps) enumeration and bulk transfers without CPU bottlenecking, while the 256 KB Flash holds USB host class drivers plus application firmware. Designers pick the F478-variant F407 for higher-speed applications, but the F105VOTOTOTOSP6 hits the right cost point for HID and CDC class devices.
מומלץ
CAN-Based Motor Control / Sensor Node
With two independent CAN 2.0B controllers, six timers (one 16-bit advanced-control, two 16-bit general-purpose, plus basic and SysTick), the STM32F105VCT6 can serve as a CAN node that drives a brushed or stepper motor while reporting telemetry over the second CAN bus. The advanced-control timer supports center-aligned PWM with dead-time insertion for half-bridge motor drives, and the 32-bit Cortex-M3 handles PID control loops and CANopen DS402 profiles. The 80+ GPIO exposed by the LQFP-100 enable driving multiple motors or sensor arrays from a single chip.
מומלץ
Point-of-Sale / Kiosk Terminal
POS terminals and self-service kiosks need USB host for barcode readers and printers, Ethernet for cloud sync, and reliable real-time control for displays and keypads. The STM32F105VCT6 combines USB OTG host, 10/100 Ethernet MAC, FSMC for LCD expansion, and the Cortex-M3 72 MHz core - giving a single MCU all the interfaces a low-to-mid-volume POS terminal needs. The 256 KB Flash holds application firmware plus network protocol stacks, and 64 KB SRAM is sufficient for display buffer and TCP socket management when paired with a low-cost Ethernet PHY such as the LAN8720.
מומלץ
LCD HMI Panel Using FSMC
Although the STM32F105VCT6 lacks FSMC in some lineups, its LQFP-100 variant exposes parallel GPIO plus SPI/I2S interfaces that drive small TFT LCDs up to 320x240 directly. For larger 800x480 HMI panels requiring an external bus, the F105VCT6 can drive them through SPI with DMA, freeing CPU cycles for touch handling and UI logic. Designers pick the F105 for cost-sensitive HMI nodes; the F407 is the upgrade path for higher-resolution displays needing FSMC bandwidth.
מומלץ
IoT Edge Sensor with USB Diagnostics Port
Industrial IoT edge nodes often need a USB diagnostic port alongside Ethernet and CAN interfaces. The STM32F105VCT6 provides USB OTG device mode for diagnostics, an Ethernet MAC for cloud uplink, and dual CAN for sensor bus access, in a single 256 KB Flash MCU. The 64 KB SRAM handles MQTT-style buffering and CAN frame queues, while the RTC with VBAT domain allows battery-backed timestamping for sensor data. This is the typical connectivity-line use case the STM32F105 was designed for.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור STM32F105VCT6 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | STM32F105RCT6 | STM32F107VCT6 | STM32F103VCT6 | GD32F105VCT6 | STM32F105VCT7 | STM32F105VBT6 |
|---|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice | STMicroelectronics | STMicroelectronics |
| Package | LQFP-100 | LQFP-64 | LQFP-100 - same | LQFP-100 - same | LQFP-100 - same | LQFP-100 - same | LQFP-100 - same |
| Core | Cortex-M3 72 MHz | Cortex-M3 72 MHz | Cortex-M3 72 MHz | Cortex-M3 72 MHz | Cortex-M3 108 MHz | Cortex-M3 72 MHz | Cortex-M3 72 MHz |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB OTG | Yes (Host + Device) | Yes (Host + Device) | Yes (Host + Device) | Device only (no OTG host) | Yes (Host + Device) | Yes (Host + Device) | Yes (Host + Device) |
| CAN 2.0B | 2x bxCAN | 2x bxCAN | 2x bxCAN | 1x bxCAN | 2x bxCAN | 2x bxCAN | 2x bxCAN |
| Ethernet MAC | Yes (MII/RMII) | Yes (MII/RMII) | Yes (MII/RMII) | No | Yes (MII/RMII) | Yes (MII/RMII) | Yes (MII/RMII) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +105C | -40C to +85C |
מבדילים עיקריים
- True USB OTG host + dual CAN + Ethernet MAC on a single Cortex-M3 (לעומתSTM32F103VCT6)
- Pin-compatible Cortex-M3 with higher 108 MHz clock for faster response (לעומתGD32F105VCT6)
- Drop-in upgrade with extended industrial temperature range (לעומתSTM32F105VCT7)
הערות תכנון
Estimated: at 72 MHz run mode, the STM32F105VCT6 consumes approximately 30 mA on VDD with peripherals active. Use a 100 nF decoupling cap on each VDD/VSS pin pair and a 4.7 uF bulk cap near the VDDA pin. Place VBAT through a 0.1 uF cap and a Schottky diode when sharing with the main 3.3 V rail to allow RTC retention when VDD drops.
Route the HSE 8 MHz crystal traces as short as possible and guard them with a ground ring to minimize EMI. The USB DP/DM pair (PA11/PA12) requires 90-ohm differential routing and a 1.5 kohm pull-up on DP for full-speed device mode - place these resistors as close to the MCU as practical. For Ethernet RMII, the 50 MHz reference clock trace to the external PHY must be length-matched to within 50 mils to keep skew under 4 ns.
Do not enable both the JTAG and SWD pins (PA13/14/PB3/PB4) without considering firmware remapping, since the F105VCT6 default state uses PA13/PA14 for SWD and remaps PB3/PB4 to JTAG trace pins. Designers using TIM2_CH1 on PA15 must also remember PA15 is the JTDI pin, which requires disabling JTAG to use as a normal GPIO. Validate alternate-function mapping with STM32CubeMX before committing to a pinout.
The LQFP-100 package has a theta_JA around 65 C/W on a standard 2-layer JEDEC test board. Estimated: at full 72 MHz load with all peripherals enabled, the chip typically dissipates around 100 mW, producing a 6-7 C junction rise. Industrial designs at 85 C ambient are well within the 105 C Tj max, but enclosed industrial enclosures may push ambient above 70 C - verify thermal margin with a real prototype.
מידע על תאימות
RoHS and REACH compliant per ST product documentation. Industrial grade - not AEC-Q100 qualified; choose STM32F105VCT7 automotive grade or ST's dedicated automotive parts for vehicle applications. Halogen-free status not explicitly stated in the verified web data.
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