The DSC6183CE2A-032K768: The MEMS resonator eliminates the quartz-crystal startup and aging issues — the frequency is set at the silicon level, so there is no load-capacitance tuning or crystal matching needed at the PCB layout stage.
Package, footprint and supply flexibility
The 1.8V~3.3V wide supply range means the same oscillator can be used in a 1.8V MCU design and later in a 3.3V system without a BOM change — the internal LDO regulates the MEMS core regardless of the external rail. Typical current draw is 3 mA max.
Obsolete — sourcing via independent channels
Microchip lists the DSC6183CE2A-032K768 as Obsolete. Because the MEMS resonator is not a quartz crystal, there is no aging drift curve to track — the frequency accuracy is set at the silicon factory and does not shift over shelf life. This makes surplus stock of this part as electrically stable as fresh production, provided the storage conditions (moisture, temperature) were within the manufacturer's recommendations.