Features
• 2 alarms—interrupt output
- Settable on the second, 10s of seconds, minute, 10s of
minutes, hour, day, month, or day of the week
- Repeat alarm for time base generation
• 2-wire interface interoperable with I2C
- 400kHz data transfer rate
• Secondary power supply input with internal switch-over
circuitry
• 2Kbytes of EEPROM
- 64-byte page write mode
- 3-bit Block Lock™ protection
• Low power CMOS
- <1μA operating current
- <3mA active current during program
- <400μA active current during data read
• Single byte write capability
• Typical nonvolatile write cycle time: 5ms
• High reliability
• Small package options
- 8-lead SOIC package, 8-lead TSSOP package