STMicroelectronics STM32F7 series STM32F746BGT6, ARM Cortex-M7, 216MHz, 1MB Flash, 320K x 8 RAM, 168 I/O, 208-LQFP, -40 to 85°C, 1.7 to 3.6V.
| Parameter | Value |
|---|---|
| Series | STM32F7 |
| 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 | 216MHz |
| Package | Tray |
| RAM size | 320K 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, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB OTG |
| Number of i (O) | 168 |
| Core processor | ARM® Cortex®-M7 |
| Case | 208-LQFP |
| Data converters | A/D 24x12b; D/A 2x12b |
| Program memory size | 1MB (1M x 8) |
Housed in a 208-LQFP with a 28x28 mm body, the package is a large fine-pitch QFP — not a BGA, so visual inspection and hand-rework are possible with a decent hot-air station. MSL 3 out of the bag: bake before reflow if the moisture-barrier bag has been open longer than the floor-life window.
Both share the same Cortex-M7 core at 216 MHz and 1 MB Flash, but the package and pin count differ. The STM32F746BGT6 comes in a 208-LQFP, while the STM32F746ZG uses a 144-LQFP with fewer I/O. The 208-pin variant provides 168 I/O versus the 144-pin part's lower count, so the choice depends on how many peripherals and external bus lines the design needs to bring out.
The core runs at 216 MHz, which is the maximum clock for the ARM Cortex-M7 on this device. At that speed, the Flash needs at least one wait state configured before raising the core clock, or the first instruction fetch will hard-fault.