STMicroelectronics STM32F1 series ARM Cortex-M3 MCU, STM32F105VBT6, 32-bit single-core, 72 MHz, 128 KB Flash, 64K x 8 RAM, 80 I/O, 100-LQFP, -40 to 85°C.
| Parameter | Value |
|---|---|
| Series | STM32F1 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 72MHz |
| Package | Tray |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | DMA, POR, PWM, Voltage Detect, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB OTG |
| Number of i (O) | 80 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 16x12b; D/A 2x12b |
| Program memory size | 128KB (128K x 8) |
The STM32F105VBT6 is a 32-bit ARM Cortex-M3 MCU from the STM32F1 connectivity line, clocked at 72 MHz with 128 KB of Flash and 64 KB of SRAM. It carries USB OTG full-speed on-chip, so a single part handles both device and host roles without an external PHY.
The core runs at 72 MHz, which is the maximum clock for the STM32F1 Cortex-M3 line. That speed handles most industrial control loops, Modbus polling, and USB packet processing without timing margin issues.
The STM32F107VBT6 is pin-compatible and adds Ethernet MAC, but requires an external PHY. The STM32F103VBT6 shares the same footprint but lacks USB OTG host capability. For a drop-in with identical connectivity, the STM32F105VBT6 is the baseline choice.
STMicroelectronics provides RoHS and REACH compliance declarations for this part. The 100-LQFP package is lead-free and meets the EU RoHS directive. No UL or IEC certification is listed for this component.