Product Overview
The STM32F103VBT6TR from STMicroelectronics is a mainstream ARM Cortex-M3 MCU running at 72 MHz with 128 KB Flash and 20 KB SRAM. It integrates USB 2.0 full-speed, CAN 2.0B, and rich analog/digital peripherals in a 100-pin LQFP package.
Key Specifications
| Core | ARM Cortex-M3 |
| Max Clock | 72 MHz |
| Flash | 128 KB |
| RAM | 20 KB |
| Peripherals | USB, CAN, 3xUSART, 2xSPI, 2xI2C, TIM, ADC, DAC |
| Package | LQFP-100 (14x14mm) |
Working Principle
Cortex-M3 core executes Thumb-2 instructions with 1.25 DMIPS/MHz. Nested Vectored Interrupt Controller (NVIC) provides deterministic interrupt handling. Peripheral clock gating minimizes power. Embedded Flash with prefetch and ART accelerator achieves zero-wait-state execution at 72 MHz.
Applications
- Industrial control
- USB device / composite
- CAN bus node
- Motor control