X1228S14IZ-4.5A Datasheet

Clock/Timing - Real Time Clocks


The X1228S14IZ-4.5A pin is the input of an inverting amplifier. An external 32.768kHz quartz crystal is used with the X1228 to supply a timebase for the real time clock. The recommended crystal is a Citizen CFS206-32.768KDZF. Internal compensation circuitry is included to form a complete oscillator circuit. Care should be taken in the placement of the crystal and the layout of the circuit. Plenty of ground plane around the device and short traces to X1228S14IZ-4.5A are highly recommended. See Application section for more recommendations. X1228S14IZ-4.5A Features • Real Time Clock/Calendar— Tracks time in Hours, Minutes, and Seconds — Day of the Week, Day, Month, and Year• 2 Polled Alarms (Non-volatile) — Settable on the Second, Minute, Hour, Day of the Week, Day, or Month— Repeat Mode (periodic interrupts) X1228S14IZ-4.5A Applications • Utility Meters• HVAC Equipment• Audio/Video Components• Set Top Box/Television• Modems• Network Routers, Hubs, Switches, Bridges• Cellular Infrastructure Equipment• Fixed Broadband Wireless Equipment• Pagers/PDA• POS Equipment• Test Meters/Fixtures• Office Automation (Copiers, Fax)• Home Appliances • Computer Products• Other Industrial/Medical/Automotive


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Manufacturer information


Seiko Instruments Inc. Is a Japanese company which head office is located in 8, Nakase 1-chome, Mihama-ku, Chiba-shi, Chiba 261-8507, Japan . It’s business lines are: Watches Business Watches, Watch Movements Electronic Components Business Quartz crystals, Micro batteries, etc. Precision Mechatronics Business Inkjet printer heads, Hard disk components, Thermal printers, Compact precision components, Machine tools, FA, Musical instrument accessories, Radiation detection and measurement systems, etc.

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