Why a MEMS oscillator beats quartz here
With ±25 ppm frequency stability and a 1.71V to 3.63V supply, this XO runs directly from a 1.8V or 3.3V rail without an external regulator. For an engine-bay ECU or a cabin-domain controller, that certification is the gate to PPAP submission.
18.432 MHz – the UART baud-rate generator frequency
18.432 MHz divides cleanly to standard baud rates (9600, 19200, 38400, 115200) with integer divisors in most MCU UART peripherals.
The 4-VFLGA package measures 1.60 mm x 1.20 mm with a seated height of 0.89 mm.