DS1683S+T&R【PDF 1/21 页】IC REAL TIME EVENT REC 8SOIC

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DS1683

Total-Elapsed-Time and Event Recorder with Alarm

General Description

The DS1683 is an integrated elapsed-time recorder con-

taining 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. The ALARM pin alerts the user when the total time

accumulated equals or exceeds the user-programmed

alarm value, or when the total number of events equals

or exceeds the user-programmed alarm value. The polar-

ity of the open-drain ALARM pin can be programmed

to either drive low or become high impedance upon an

alarm condition. The DS1683 is ideal for applications that

monitor the total amount of time that a device has been

in operation and/or the number of uses since inception

service, repair, or last calibration.

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

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

19-6388; Rev 0; 6/12

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part,

refer to www.maximintegrated.com/DS1683.related.

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

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