550 MHz Cortex-M7 — what it buys you
The STM32H730ABI6Q is an STMicroelectronics STM32H7-series microcontroller built around a single ARM Cortex-M7 core clocked at 550 MHz. That clock rate puts it in the high-performance tier of the STM32 portfolio — enough headroom for real-time control loops, sensor fusion, or audio processing without needing an external DSP or FPGA. The 128 KB of Flash and 564K x 8 of RAM give it a modest firmware footprint, so this part targets applications where the compute speed matters more than large code storage: motor drives, industrial PLCs, or communications gateways.
Connectivity and peripheral set
This MCU carries a dense peripheral list: Ethernet MAC, CANbus, USB OTG, multiple SPI and I2C, plus QSPI for external Flash or RAM expansion. The EBI/EMI interface lets you attach parallel SRAM, NOR Flash, or an FPGA. The 121 I/O pins in the 169-UFBGA package give enough GPIO for a memory-mapped display or a large sensor array.
Package and rework considerations
The 169-UFBGA (7x7 mm) is a fine-pitch BGA. It reflows well with a standard profile if the board has a solder-mask-defined pad and the stencil aperture is matched to the 0.5 mm ball pitch. For rework, pre-bake at 125°C for 24 hours if the moisture barrier bag has been open — MSL 3 parts can pop during hot air if they've absorbed humidity. The small footprint saves board area but demands a four-layer PCB for signal routing.
Lifecycle and supply
The base product number STM32H730 covers a range of Flash and RAM options; if you need more code space, a higher-density sibling in the same package may be a drop-in fit.