STM32F105VCT6 - 72MHz Cortex-M3 MCU, 256KB Flash, USB OTG | ST
部品番号: STM32F105VCT6| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $9.2 | $9.20 |
| 10 | $8.45 | $84.50 |
| 100 | $7.4 | $740.00 |
| 500 | $6.65 | $3,325.00 |
| 1,000 | $5.95 | $5,950.00 |
| 2,500 | $5.4 | $13,500.00 |
STM32F105VCT6 概要
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.
ドロップイン代替品: STM32F105VCT6 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: STM32F105VCT6 （同一形状・フットプリント） — 相違点: Timers, ADC, Package, USB, I2C.
クイック比較ツール — 並列比較する代替部品を選択:
STM32F105RCT6
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$4.85 / 個
データシートを見る →STM32F107VCT6
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$6.95 / 個
データシートを見る →STM32F103VCT6
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.68 / 個
データシートを見る →GD32F105VCT6
✅ ドロップイン✓ 在庫あり
$1.55 / 個
データシートを見る →STM32F105VCT7
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$7.65 / 個
データシートを見る →STM32F105VBT6
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM32F105VCT6 最大定格＆電気的特性
| 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 |
| パッケージ | LQFP-100 (14x14 mm) |
| 動作温度 | -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 |
| RoHS ステータス | Compliant |
STM32F105VCT6 ピン構成
| ピン 1 | PE2 — GPIO PE2 / TRACECLK |
| ピン 2 | PE3 — GPIO PE3 / TRACED0 |
| ピン 3 | PE4 — GPIO PE4 / TRACED1 |
| ピン 4 | PE5 — GPIO PE5 / TRACED2 |
| ピン 5 | PE6 — GPIO PE6 / TRACED3 |
| ピン 6 | VBAT — RTC backup supply |
| ピン 7 | PC13 — GPIO PC13 / Tamper-RTC |
| ピン 8 | PC14 — GPIO PC14 / OSC32_IN |
| ピン 9 | PC15 — GPIO PC15 / OSC32_OUT |
| ピン 10 | VSS_1 — Ground |
| ピン 11 | VDD_1 — Digital supply 2.0-3.6 V |
| ピン 12 | OSC_IN — HSE crystal oscillator input |
| ピン 13 | OSC_OUT — HSE crystal oscillator output |
| ピン 14 | NRST — Reset (active low) |
| ピン 15 | PC0 — GPIO PC0 / ADC12_IN10 |
| ピン 16 | PC1 — GPIO PC1 / ADC12_IN11 |
| ピン 17 | PC2 — GPIO PC2 / ADC12_IN12 |
| ピン 18 | PC3 — GPIO PC3 / ADC12_IN13 |
| ピン 19 | VSSA — Analog ground |
| ピン 20 | VDDA — Analog supply 2.0-3.6 V |
| ピン 21 | PA0 — GPIO PA0 / WKUP / ADC12_IN0 / TIM2_CH1 |
| ピン 22 | PA1 — GPIO PA1 / ADC12_IN1 / TIM2_CH2 |
| ピン 23 | PA2 — GPIO PA2 / ADC12_IN2 / TIM2_CH3 / USART2_TX |
| ピン 24 | PA3 — GPIO PA3 / ADC12_IN3 / TIM2_CH4 / USART2_RX |
| ピン 25 | VSS_2 — Ground |
| ピン 26 | VDD_2 — Digital supply 2.0-3.6 V |
| ピン 27 | PA4 — GPIO PA4 / ADC12_IN4 / SPI1_NSS / USART2_CK |
| ピン 28 | PA5 — GPIO PA5 / ADC12_IN5 / SPI1_SCK / DAC_OUT1 |
| ピン 29 | PA6 — GPIO PA6 / ADC12_IN6 / SPI1_MISO / TIM3_CH1 |
| ピン 30 | PA7 — GPIO PA7 / ADC12_IN7 / SPI1_MOSI / TIM3_CH2 |
| ピン 31 | PC4 — GPIO PC4 / ADC12_IN14 |
| ピン 32 | PC5 — GPIO PC5 / ADC12_IN15 |
| ピン 33 | PB0 — GPIO PB0 / ADC12_IN8 / TIM3_CH3 |
| ピン 34 | PB1 — GPIO PB1 / ADC12_IN9 / TIM3_CH4 |
| ピン 35 | PB2 — GPIO PB2 / BOOT1 |
| ピン 36 | PE7 — GPIO PE7 |
| ピン 37 | PE8 — GPIO PE8 / TIM1_CH1N |
| ピン 38 | PE9 — GPIO PE9 / TIM1_CH1 |
| ピン 39 | PE10 — GPIO PE10 / TIM1_CH2N |
| ピン 40 | PE11 — GPIO PE11 / TIM1_CH2 |
| ピン 41 | PE12 — GPIO PE12 / TIM1_CH3N |
| ピン 42 | PE13 — GPIO PE13 / TIM1_CH3 |
| ピン 43 | PE14 — GPIO PE14 / TIM1_CH4 |
| ピン 44 | PE15 — GPIO PE15 / TIM1_BKIN |
| ピン 45 | PB10 — GPIO PB10 / I2C2_SCL / USART3_TX |
| ピン 46 | PB11 — GPIO PB11 / I2C2_SDA / USART3_RX |
| ピン 47 | VSS_3 — Ground |
| ピン 48 | VDD_3 — Digital supply 2.0-3.6 V |
| ピン 49 | PB12 — GPIO PB12 / SPI2_NSS / I2S2_WS |
| ピン 50 | PB13 — GPIO PB13 / SPI2_SCK / I2S2_CK |
| ピン 51 | PB14 — GPIO PB14 / SPI2_MISO / TIM1_CH2N |
| ピン 52 | PB15 — GPIO PB15 / SPI2_MOSI / TIM1_CH3N |
| ピン 53 | PD8 — GPIO PD8 / USART3_TX / ETH_RMII_RX_DV |
| ピン 54 | PD9 — GPIO PD9 / USART3_RX / ETH_RMII_CRS_DV |
| ピン 55 | PD10 — GPIO PD10 |
| ピン 56 | PD11 — GPIO PD11 |
| ピン 57 | PD12 — GPIO PD12 / TIM4_CH1 |
| ピン 58 | PD13 — GPIO PD13 / TIM4_CH2 |
| ピン 59 | PD14 — GPIO PD14 / TIM4_CH3 |
| ピン 60 | PD15 — GPIO PD15 / TIM4_CH4 |
| ピン 61 | PC6 — GPIO PC6 / I2S2_MCK / TIM3_CH1 |
| ピン 62 | PC7 — GPIO PC7 / I2S2_CK / TIM3_CH2 |
| ピン 63 | PC8 — GPIO PC8 / TIM3_CH3 |
| ピン 64 | PC9 — GPIO PC9 / TIM3_CH4 |
| ピン 65 | PA8 — GPIO PA8 / USART1_CK / TIM1_CH1 / MCO |
| ピン 66 | PA9 — GPIO PA9 / USART1_TX / TIM1_CH2 |
| ピン 67 | PA10 — GPIO PA10 / USART1_RX / TIM1_CH3 |
| ピン 68 | PA11 — GPIO PA11 / USART1_CTS / CAN1_RX / USB_DM |
| ピン 69 | PA12 — GPIO PA12 / USART1_RTS / CAN1_TX / USB_DP |
| ピン 70 | PA13 — GPIO PA13 / JTMS / SWDIO |
| ピン 71 | VSS_4 — Ground |
| ピン 72 | VDD_4 — Digital supply 2.0-3.6 V |
| ピン 73 | PA14 — GPIO PA14 / JTCK / SWCLK |
| ピン 74 | PA15 — GPIO PA15 / JTDI / TIM2_CH1 / SPI1_NSS |
| ピン 75 | PC10 — GPIO PC10 / UART4_TX / SPI3_SCK |
| ピン 76 | PC11 — GPIO PC11 / UART4_RX / SPI3_MISO |
| ピン 77 | PC12 — GPIO PC12 / UART5_TX / SPI3_MOSI |
| ピン 78 | PD0 — GPIO PD0 / OSC_IN |
| ピン 79 | PD1 — GPIO PD1 / OSC_OUT |
| ピン 80 | PD2 — GPIO PD2 / TIM3_ETR / UART5_RX |
| ピン 81 | PD3 — GPIO PD3 / USART2_CTS |
| ピン 82 | PD4 — GPIO PD4 / USART2_RTS |
| ピン 83 | PD5 — GPIO PD5 / USART2_TX |
| ピン 84 | PD6 — GPIO PD6 / USART2_RX |
| ピン 85 | PD7 — GPIO PD7 / USART2_CK |
| ピン 86 | PB3 — GPIO PB3 / JTDO / SPI3_SCK / TIM2_CH2 |
| ピン 87 | PB4 — GPIO PB4 / NJTRST / SPI3_MISO / TIM3_CH1 |
| ピン 88 | PB5 — GPIO PB5 / I2C1_SMBAI / SPI3_MOSI / TIM3_CH2 |
| ピン 89 | PB6 — GPIO PB6 / I2C1_SCL / TIM4_CH1 |
| ピン 90 | PB7 — GPIO PB7 / I2C1_SDA / TIM4_CH2 |
| ピン 91 | BOOT0 — Boot mode select |
| ピン 92 | PB8 — GPIO PB8 / TIM4_CH3 |
| ピン 93 | PB9 — GPIO PB9 / TIM4_CH4 |
| ピン 94 | PE0 — GPIO PE0 / TIM4_ETR |
| ピン 95 | PE1 — GPIO PE1 |
| ピン 96 | VSS_5 — Ground |
| ピン 97 | VDD_5 — Digital supply 2.0-3.6 V |
| ピン 98 | PE2 — GPIO PE2 (alternate location, trace clock) |
| ピン 99 | PE3 — GPIO PE3 (alternate location) |
| ピン 100 | VSS_6 — Ground |
主な用途
STM32F105VCT6 の用途: 6 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STM32F105VCT6 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- True USB OTG host + dual CAN + Ethernet MAC on a single Cortex-M3 （vs STM32F103VCT6)
- Pin-compatible Cortex-M3 with higher 108 MHz clock for faster response （vs GD32F105VCT6)
- Drop-in upgrade with extended industrial temperature range （vs STM32F105VCT7)
設計ノート
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.
コンプライアンス情報
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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