What this MEMS oscillator replaces in your clock tree
The 1.71V to 3.63V supply range lets this oscillator run directly from a 1.8V, 2.5V, or 3.3V rail without an intermediate LDO — useful when the MCU core and I/O banks are on different voltages and you want a single clock part number across both domains. That difference matters in a battery-backed ECU that stays awake listening for a CAN wake pattern.
Package footprint and board layout considerations
The 4-VFLGA package measures 2.00mm x 1.60mm with a seated height of 0.89mm — the LGA land pattern has no exposed leads, so the solder joint is entirely under the package. A 0.35mm NSMD pad with a 0.20mm solder-mask opening per the Microchip layout guide keeps the fillet consistent.
Enable/Disable function for power gating
This is the standard approach for sharing a single oscillator across multiple peripherals that are clock-gated in sleep mode.