Package and mounting
The STM32H743AGI6 is STMicroelectronics' flagship single-core ARM Cortex-M7 MCU in the STM32H7 series, clocked at 480 MHz. That core speed puts it in the high-performance tier for Cortex-M parts — enough headroom for real-time control loops, DSP-style math, or driving a graphical display without an external graphics controller. The 1 MB of Flash and 1M x 8 of RAM give firmware room for complex protocol stacks or OTA staging, and the 131 I/O lines handle parallel buses and plenty of sensor interfaces. It's the part you reach for when a mid-range Cortex-M4 runs out of gas.
Peripheral set and connectivity — what hooks up
This MCU packs a dense peripheral list: dual CAN, Ethernet with MAC, USB OTG, multiple SPI and I2C, plus SAI and SPDIF for audio.
169-UFBGA — rework and layout notes
The 169-UFBGA (7x7 mm) package is a fine-pitch BGA. Will it survive the hot air? Yes, with a proper profile and a pre-bake if the moisture barrier bag has been open. The 0.5 mm ball pitch means via-in-pad or microvias on the PCB — standard through-hole vias between balls will be tight. MSL 3 out of the bag; bake at 125°C for 24 hours if the floor-life window has been exceeded.
Temperature range and supply — where it runs
The internal oscillator means you can get the core running without an external crystal for initial bring-up, though an external clock is recommended for Ethernet or USB timing accuracy.
Lifecycle and supply posture
That means it's safe to qualify for new production runs and multi-year programs. The base product number is STM32H743, so variants with different package or temperature grade share the same core die and peripheral set.