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
