The customer intends to improve the accuracy of the system clock by switching from an internal DCO to an external clock.
The customer would like to know the following info:
1. Can the MSP430FR2633 only use a 32768 crystal?
2. If the customer intends to configure the MCLK and SMCLK to 8 M/2M, can he only use the DCO and select the reference source for the FLL when configuring?
CSCTL3 |= SELREF__REFOCLK; // Set REFO as FLL reference source
OR CSCTL3 |= SELREF__XT1CLK; // Set XT1CLK as FLL reference source
Thanks!
Best Regards,
Cherry Zhou