STMicroelectronics STM32F303C6T6, STM32F3 series, 32-bit ARM Cortex-M4 single-core MCU, 72 MHz, 32 KB Flash, 16 KB SRAM, 11x12b ADC, 1x12b DAC, CANbus, I²C, SPI, UART, -40 to 85°C, 48-LQFP, surface mount.
| Parameter | Value |
|---|---|
| Series | STM32F3 |
| 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 | 16K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | DMA, I²S, POR, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, SPI, UART/USART |
| Number of i (O) | 37 |
| Core processor | ARM® Cortex®-M4 |
| Case | 48-LQFP |
| Data converters | A/D 11x12b; D/A 1x12b |
| Program memory size | 32KB (32K x 8) |
For BOM resilience, the STM32F303 family shares pin-compatible density variants (32 KB to 256 KB Flash) across the same 48-LQFP footprint, giving a drop-in upgrade path without a board spin if firmware outgrows the 32 KB allocation.
The STM32F303C6T6 runs at a maximum clock speed of 72 MHz from the ARM Cortex-M4 core. At this frequency the Flash requires one wait state for zero-wait access; the PLL can be configured from the internal or an external oscillator.
Within the STM32F303 family, pin-compatible 48-LQFP variants with larger Flash (e.g., 64 KB or 128 KB) share the same footprint and peripheral set, providing a drop-in upgrade path. Cross-vendor alternatives would require a board respin due to differences in pinout and register maps.
The STM32F303C6T6 and STM32F103 are not pin-compatible — they belong to different STM32 families with different peripheral maps and register layouts. Software migration requires rewriting peripheral drivers; hardware requires a new PCB layout. The STM32F303 is a closer match for designs needing the Cortex-M4 FPU and mixed-signal converters.