The 143-ball WLCSP package (4.54 x 5.85 mm) saves board area but demands fine-pitch assembly — not a hand-solder part.
Connectivity and peripherals — what is on board
Listed as Active in the lifecycle status, so no last-time-buy clock is running.

STMicroelectronics STM32F7 series, ARM Cortex-M7 32-bit MCU, 216 MHz, 512 KB Flash, 320 KB RAM, 114 I/O, 143-WLCSP, -40°C to 85°C.
| 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 | Tape & Reel (TR); Cut Tape (CT) |
| 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) | 114 |
| Core processor | ARM® Cortex®-M7 |
| Case | 143-UFBGA, WLCSP |
| Data converters | A/D 24x12b; D/A 2x12b |
| Program memory size | 512KB (512K x 8) |
The 143-ball WLCSP package (4.54 x 5.85 mm) saves board area but demands fine-pitch assembly — not a hand-solder part.
Listed as Active in the lifecycle status, so no last-time-buy clock is running.
The core runs at 216 MHz, which is the maximum clock for this Cortex-M7 device.
The STM32F746ZG is a pin-compatible LQFP144-package variant of the same die. The ZEY6TR uses the 143-WLCSP package, which is smaller (4.54 x 5.85 mm) but requires a more advanced assembly process. Both share the same 216 MHz core, 512 KB Flash, and peripheral set.