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
