General Description

The DS1683 is an integrated elapsed-time recorder containing a factory-calibrated, low-temperature-coefficient

RC time base that eliminates the need for an external crystal. Using EEPROM technology to maintain data in

the absence of power, the DS1683 requires no backup power source. The DS1683 detects and records the num

ber of falling edge transitions on the EVENT pin as well as the total cumulative time that the EVENT pin is held

high.

Benefits and Features

Records the Total Time the EVENT Input Has Been Active High and Number of Events (Falling Edges of EVENT) That Have Occurred

32-Bit, Nonvolatile, Elapsed Time Counter (ETC) Monitors Event Duration with Quarter Seconds Resolution and Provides 34 Years of Total Time Accumulation

Nonvolatile 16-Bit Event Counter Records the Number of Falling Edges Seen by the EVENT Pin

Calibrated, Low-Temperature-Coefficient RC Time Base

16 Bytes of User EEPROM

Password Protection Scheme (4 Bytes)

I2C-Compatible Interface

+2.5V to +5.5V Operating Voltage Range

Applications

High-Temp, Rugged, Industrial Applications Where Vibration or Shock Could Damage a Quartz Crystal

Any System Where Time-of-Use is Important to Track

Power-on-Time Recorder