ST STM32F3 series, ARM Cortex-M4, 32-bit, 72 MHz, 512 KB Flash, 80K x 8 RAM, DMA, I²S, POR, PWM, WDT, CANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB, A/D 22x12b; D/A 2x12b, -40°C ~ 105°C, 64-LQFP.
| 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 ~ 105°C (TA) |
| Speed | 72MHz |
| Package | Tray |
| RAM size | 80K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | DMA, I²S, POR, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB |
| Number of i (O) | 51 |
| Core processor | ARM® Cortex®-M4 |
| Case | 64-LQFP |
| Data converters | A/D 22x12b; D/A 2x12b |
| Program memory size | 512KB (512K x 8) |
51 GPIOs in the 64-LQFP package (10x10 mm). On-chip CAN, USB, SPI, I²C, UART, and IrDA cover most industrial fieldbus and HMI links.
For dual-sourcing resilience, the STM32F303CCT6 (48-pin, 256 KB Flash, -40 to 85 °C) is a lower-density sibling but shares the same core and peripheral set — useful as a second source on a different board variant, not a pin-drop replacement.
The STM32F303CCT6 has 256 KB Flash (half the 512 KB of the RET7), 37 I/O (vs 51), 15 ADC channels (vs 22), and a commercial temperature range of -40 to 85 °C (vs -40 to 105 °C). Both run the same Cortex-M4 core at 72 MHz and share the same peripheral set. The CCT6 comes in a 48-pin LQFP, so it is not pin-compatible with the 64-pin RET7.
Yes, it is ROHS3 compliant per ST's listing.
ST's NUCLEO-F303RE and STM32F3DISCOVERY boards use the same STM32F303 series and are compatible for code development and peripheral evaluation. The STM32F303RET7 itself is not mounted on those boards, but the firmware and peripheral library are shared across the series.