What the key specs mean for the BOM
The DSC6121CE2A-00CVT: The dual-output architecture replaces two separate oscillators, saving board area and reducing per-unit procurement lines — the 32.768 MHz rail typically feeds a real-time clock or low-speed peripheral, while the 56 MHz output drives the main MCU or SoC core clock.
Lifecycle reality — obsolete, no successor on record
For a production BOM that depends on this exact dual-frequency MEMS XO in the 4-VDFN footprint, the available path is sourcing through independent distribution channels. Stock is confirmed at quote time; no pin-compatible drop-in replacement from Microchip's current DSC61XX portfolio has been formally designated.