What this MEMS oscillator brings to the board
The DSC1001CL2-012.0000T is a 12 MHz MEMS-based oscillator (XO) from Microchip's DSC1001 series, delivering a CMOS output with ±25 ppm frequency stability across its full -40°C to 105°C range. Unlike a quartz crystal that needs external load capacitors and an inverter, this is a complete oscillator in a 4-SMD no-lead package — drop it on the board, connect 1.8V to 3.3V, and it clocks.
AEC-Q100 qualification and the temperature envelope
Power budget and standby behaviour
Drawing a maximum of 6.3 mA when active, the DSC1001CL2-012.0000T is efficient enough for a battery-backed module; in standby (power-down) the current drops to 15 µA max, letting the system sleep the clock tree without a separate gating FET. The standby function is a logic-level pin — pull it low and the output stops, the core goes to sleep, and the supply current falls to the microamp range. No external enable circuit needed.
Supply voltage flexibility
The wide 1.8V to 3.3V supply range means the same oscillator works across a 1.8V MCU, a 2.5V FPGA bank, or a 3.3V peripheral bus — no level translator or separate LDO for the clock source.
