Features

• Real Time Clock/Calendar

- Tracks Time in Hours, Minutes and Seconds

- Day of the Week, Day, Month and Year

- 3 Selectable Frequency Outputs

• Two Non-Volatile Alarms

- Settable on the Second, Minute, Hour, Day of the Week,

Day or Month

- Repeat Mode (periodic interrupts)

• Automatic Backup to Battery or SuperCap

- Power Failure Detection

- 800nA Battery Supply Current

• On-Chip Oscillator Compensation:

- Internal Feedback Resistor and Compensation

Capacitors

- 64 Position Digitally Controlled Trim Capacitor

- 6 Digital Frequency Adjustment Settings to ±30ppm

• 512x8 Bits of EEPROM

- 16-Byte Page Write Mode (32 total pages)

- 8 Modes of BlockLock™ Protection

- Single Byte Write Capability

- Data Retention: 50 years

- Endurance: >2,000,000 Cycles Per Byte

• CPU Supervisor Functions

- Power-On Reset, Low Voltage Sense

- Watchdog Timer (0.25s, 0.75s, 1.5s)

• I2C Interface

- 400kHz Data Transfer Rate

• 14 Ld SOIC and 14 Ld TSSOP Packages

• Pb-Free (RoHS Compliant)