FEATURES

• Real Time Clock/Calendar

— Tracks time in Hours, Minutes, Seconds and

Hundredths of a Second

— 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

• 32K x 8 Bits of EEPROM

— 128-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, 100Hz,

or 32.768kHz)

• Low Power CMOS

— 1.25µA Operating Current (Typical)

• Small Package Options

— 8 Ld EIAJ SOIC and 14 Ld TSSOP

• Repetitive Alarms

• Temperature Compensation

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