STMicroelectronics STM32F1 series, STM32F105VCT6TR, ARM Cortex-M3, 32-Bit, 72 MHz, 256 KB Flash, 64K x 8 RAM, DMA, POR, PWM, Voltage Detect, WDT, CANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB OTG, A/D 16x12b, D/A 2x12b, -40°C to 85°C, 100-LQFP.
| 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 | Tape & Reel (TR) Cut Tape (CT) |
| 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 | 256KB (256K x 8) |
The USB OTG peripheral is the standout feature here: it lets the MCU act as either host or device, which saves a separate USB controller chip on the BOM for designs that need to talk to USB flash drives or keyboards.
The 100-LQFP package brings out 80 general-purpose I/O pins, enough for parallel LCD interfaces, multiple UARTs, and sensor arrays without an I/O expander.
A functional alternative within the STM32 portfolio is the STM32L151CBU6A, also an ARM Cortex-M3 but clocked at 32 MHz and optimized for lower power. The STM32F105VCT6TR runs at 72 MHz and includes USB OTG, which the STM32L151 lacks. They share the same core architecture and many peripherals, but the F105 is the higher-performance choice for connectivity-heavy designs.
The core processor is an ARM Cortex-M3, 32-bit single-core, running at up to 72 MHz.