Mar 15, 2012 · This is why 32kHz is the standard frequency used in real-time clocks. The above image shows the crystal soldered onto my LaunchPad. There are ...
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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.
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 smclk in MSP430?
The basic clock module supplies the MSP430 with three clock signals: - ACLK, crystal oscillator signal. - MCLK, controllers main system clock. - SMCLK, sub main system clock used to run the peripheral module. function.
What is the clock speed of MSP430?
The clock system in the MSP430FR2433 device features an FLL that can be used to stabilize the internal DCO and achieve clock frequencies up to 16 MHz. The FLL requires a reference clock that can be sourced from either an internal 32.768-kHz reference oscillator (REFO) or an external crystal of the same frequency.
