Hi Aswin, Short XIN and XOUT should not damage internal oscillator block but it will set the crystal oscillator fault bits, please refer to UG of MSP430F4250 in 5.2.11 FLL+ Fail-Safe Operation. If the Load Capacitance for your crystal is 18pF, C1=C2 should be close to 18pF x 2 - 3pF = 33pF. For 12pF load capacitance , C1 = C2 ~ 12 x 2 -3 = 21 pF. regards KC
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