300 MHz Cortex-M7 in a 144-ball BGA — what this part is
The Microchip ATSAMS70Q19B-CNT is a 32-bit ARM Cortex-M7 microcontroller from the SAM S70 series, clocked at 300 MHz.
Connectivity and data conversion
The connectivity set covers EBI/EMI for external memory or FPGA glue, I²C, IrDA, LINbus, MMC/SD/SDIO, QSPI, SPI, UART/USART, and USB.
BGA rework and handling considerations
The 144-LFBGA package requires a hot-air or reflow station for removal and replacement — not a field-swap part with a soldering iron. The 10x10 mm body with 0.8 mm ball pitch is manageable with a decent rework profile and a stencil. ESD handling with grounded wrist strap and conductive mat is assumed for all BGA work; the BGA's hidden joints mean a bad solder ball is invisible until functional test or X-ray inspection.