DESCRIPTION
The X1205 device is a Real Time Clock with clock/calendar, two polled alarms, oscillator compensation, and battery backup switch.
The oscillator uses an external, low-cost 32.768kHz crystal. All compensation and trim components are integrated on the chip. This eliminates several external discrete components and a trim capacitor, saving board area and component cost.
The Real-Time Clock keeps track of time with separate registers for Hours, Minutes, and Seconds. The Calendar has separate registers for Date, Month, Year and Day-of-week. The calendar is correct through 2099, with automatic leap year correction.

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)
• Oscillator Compensation on chip
   —Internal feedback resistor and compensation capacitors
   —64 position Digitally Controlled Trim Capacitor
   —6 digital frequency adjustment settings to ±30ppm
• Battery Switch or Super Cap Input
• 2-Wire™ Interface interoperable with I2C*
   —400kHz data transfer rate
• Low Power CMOS
   —1.25µA Operating Current (Typical)
• Small Package Options
   —8-Lead SOIC and 8-Lead TSSOP
• Repetitive Alarms
• Temperature Compensation
• Pb-Free Plus Anneal Available (RoHS Compliant)

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