STMicroelectronics STM32F1 series, STM32F103RFT6, 32-bit ARM Cortex-M3 MCU, 72 MHz, 768 KB Flash, 96K x 8 RAM, 51 I/O, 64-LQFP, -40°C 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 | 96K 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) | 51 |
| Core processor | ARM® Cortex®-M3 |
| Case | 64-LQFP |
| Data converters | A/D 16x12b; D/A 2x12b |
| Program memory size | 768KB (768K x 8) |
It packs 51 general-purpose I/O lines, a full set of peripherals including DMA, motor-control PWM, multiple 12-bit ADCs and DACs, plus CAN, USB, and multiple serial interfaces. The 64-LQFP package (10x10 mm body) keeps the footprint compact while still offering enough pins for a sensor-rich control board or a communication gateway.
It has 51 I/O pins, 16x12-bit ADC channels, 2x12-bit DACs, and connectivity including CAN, USB, SPI, I²C, and UART.
The F103 offers more Flash (768 KB vs the L151's typical 128 KB) and more I/O (51 vs 37). The L151 adds capacitive-sensing and I²S peripherals. They are not pin-compatible — the L151 uses a different package — so a board redesign is needed to swap between them.