The XO2520BM-ULP-32.768KHz from Dynamic Engineers is a Clock Oscillator with Frequency 32.768 kHz, Supply Voltage 1.5 or 1.8 V, Current 1.4 to 1.8 uA, Startup Time 8 mS, Duty Cycle 45 to 55 %. Tags: Surface Mount. More details for XO2520BM-ULP-32.768KHz can be seen below.