STMicroelectronics STM32F1 series 32-bit ARM Cortex-M3 MCU, STM32F103VBT7TR, 72 MHz, 128 KB Flash, 20K x 8 RAM, 80 I/O, 100-LQFP, -40 to 105 °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 ~ 105°C (TA) |
| Speed | 72MHz |
| Package | Tape & Reel (TR) |
| RAM size | 20K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | DMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB |
| Number of i (O) | 80 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 16x12b |
| Program memory size | 128KB (128K x 8) |
The STMicroelectronics STM32F103VBT7TR is a 32-bit ARM Cortex-M3 microcontroller running at 72 MHz, with 128 KB of Flash program memory and 20 KB of SRAM. The industrial temperature range (-40 to 105 °C) and 2 V to 3.6 V supply make it a fit for factory automation, motor drives, outdoor telecom, and other thermally demanding environments.
The STM32F103 family includes multiple density and package variants sharing the same 100-pin LQFP footprint. A pin-compatible alternative within the family would be another STM32F103 with the same 100-LQFP package and 2 V to 3.6 V supply, such as the STM32F103VCT6 (256 KB Flash) or STM32F103VDT6 (384 KB Flash). Verify the exact memory and peripheral set against your firmware requirements before swapping.
The core runs at 72 MHz, which is the maximum clock for the STM32F103 series. That speed, combined with the ARM Cortex-M3 pipeline, delivers roughly 1.25 DMIPS/MHz for control-loop and protocol-stack tasks.
It belongs to the STM32F1 series, specifically the STM32F103 value line — the most widely deployed Cortex-M3 MCU family from STMicroelectronics.