Mar 15, 2012 · This number can be divided down using binary values to give you a frequency of 1Hz, or a period of 1 second. This is why 32kHz is the standard ...
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What is the significance of a 32.768 kHz watch crystal for ACLK?
Understanding 32.768 kHz Crystals
Their specific frequency allows them to divide down to 1 Hz, equivalent to one second in frequency, making them the basis for all day, date, and timekeeping functions for any electronic design.
What is the frequency of MSP430 ACLK?
Clocks on the MSP430 Launchpad
After power-up, MCLK and SMCLK are sourced from DCOCLK at about 1.1MHz. ACLK is sourced from LFXT1CLK in LF mode. The Launchpad comes with an option 32kHz crystal in the box that needs to be installed by the user.
