STMicroelectronics STM32F4 series, ARM Cortex-M4, 32-Bit Single-Core MCU, 100MHz, 512KB Flash, 256K x 8 RAM, CANbus/EBI/EMI/I²C/SPI/USB OTG, 50 I/O, 64-LQFP, -40 to 85°C.
| Parameter | Value |
|---|---|
| Series | STM32F4 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.7V ~ 3.6V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 100MHz |
| Package | Tray |
| RAM size | 256K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD/SDIO, QSPI, SPI, UART/USART, USB OTG |
| Number of i (O) | 50 |
| Core processor | ARM® Cortex®-M4 |
| Case | 64-LQFP |
| Data converters | A/D 16x12b |
| Program memory size | 512KB (512K x 8) |
The STM32F412RET6: ARM Cortex-M4 MCU at 100MHz with 512KB Flash and 256K x 8 RAM.
Peripherals include CANbus, USB OTG, QSPI, and EBI/EMI. 50 I/O in 64-LQFP. 16-channel 12-bit ADC.
The 64-LQFP package (10x10 mm) is a hand-solderable footprint, so rework is straightforward — no hot-air station needed for a swap.
For a new design, this is the right call — no need to design in a second source for obsolescence cover yet.
The STM32F412RET6 and STM32F411RET6 share the same 64-LQFP package and are pin-compatible on the same footprint. The F412 adds CANbus, QSPI, and an EBI/EMI bus that the F411 lacks, so the extra pins are no-connects on the F411. A drop-in swap is possible if the firmware accounts for the peripheral differences.
The STM32F413RET6 is a superset of the F412: it adds two 12-bit DACs, a cryptographic accelerator, and a true random number generator. The F413 is pin-compatible with the F412, so you can upgrade without a board spin if you need the extra analog output or security features.
The STM32F405RET6 runs at 168 MHz and includes a full-speed USB OTG plus a 12-bit DAC, while the F412RET6 runs at 100 MHz and omits the DAC. The packages differ — the F405 comes in 64-LQFP but the pinout is not identical. A direct replacement requires checking the pin mapping and firmware changes for the clock speed and peripheral differences. They are not drop-in compatible.