STMicroelectronics STM32H7 series, STM32H743BIT6, ARM Cortex-M7 32-Bit MCU, 480MHz, 2MB Flash, 1M x 8 RAM, 168 I/O, 208-LQFP, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Series | STM32H7 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.62V ~ 3.6V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 480MHz |
| Package | Tray |
| RAM size | 1M x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, Ethernet, I²C, IrDA, LINbus, MDIO, MMC/SD/SDIO, QSPI, SAI, SPDIF, SPI, SWPMI, UART/USART, USB OTG |
| Number of i (O) | 168 |
| Core processor | ARM® Cortex®-M7 |
| Case | 208-LQFP |
| Data converters | A/D 36x16b; D/A 2x12b |
| Program memory size | 2MB (2M x 8) |
The STM32H743BIT6: It carries 2 MB of Flash and 1 MB of RAM, giving it the headroom for complex control algorithms, real-time Ethernet stacks, and high-rate data acquisition without external memory.
The 208-LQFP (28x28 mm) is a large, fine-pitch surface-mount package. It needs a solder-paste stencil designed for 0.5 mm pitch and a reflow profile that avoids skew.
Both are STM32H743 variants with the same core, memory, and peripheral set. The suffix difference typically reflects the package option: BIT6 is the 208-LQFP, while IIT6 is the 176-LQFP. Verify the exact pin count and footprint against your board layout before substituting.
Yes. The Cortex-M7 core with its FPU and MPU runs FreeRTOS without issue. The 480 MHz clock and 1 MB RAM leave ample headroom for a real-time OS, multiple tasks, and a TCP/IP stack. ST also provides a FreeRTOS port in its HAL and CubeMX ecosystem.
The datasheet is available from STMicroelectronics under the base product number STM32H743. It covers the full electrical characteristics, pinout, memory map, and peripheral registers for all package variants including the 208-LQFP.