Crystal Unit is a generic term used in place of the more complete expression "piezoelectric quartz crystal unit." A crystal unit is a complete assembly, consisting of a tuned quartz resonator with electrodes, a holder with suitable mounting structures in a permanently hermetically sealed package
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A crystal oscillator is a hybrid electronic component that combines a crystal and an oscillation circuitry into one package to generate a clock signal.
Crystal oscillators serve as stable frequency references for a broad range of communication equipment and microprocessor / microcontroller applications.
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100% Leadfree Miniature Ceramic-Package!
As a System-in-Package solution, this RTC combines the 32.768 kHz crystal unit together with the CMOS-based oscillator circuit in a miniature SMD ceramic package. The calendar function tracks year, month, date, and day of the week with built-in century and leap-year flags.
The clock function tracks hour, minute and second in 24-hour format. Programmable alarm setting and universal timer functions increase flexibility.
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