DESCRIPTION
The X1226 device is a Real Time Clock with clock/calendar, two polled alarms with integrated 512x8 EEPROM, oscillator compensation, and battery backup switch.

Real Time Clock/Calendar with EEPROM
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
• 512 x 8 Bits of EEPROM
   —64-Byte Page Write Mode
   —8 Modes of Block Lock™ Protection
   —Single Byte Write Capability
• High Reliability
   —Data Retention: 100 Years
   —Endurance: 100,000 Cycles Per Byte
• 2-Wire™ Interface Interoperable with I2C
   —400kHz Data Transfer Rate
• Frequency Output (SW Selectable: Off, 1Hz, 4096Hz or 32.768kHz)
• Low Power CMOS
   —1.25µA Operating Current (Typical)
• Small Package Options
   —8 Ld SOIC and 8 Ld 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