DS1683 Total-Elapsed-Time and Event Recorder with Alarm General Description Benefits and Features The DS1683 is an integrated elapsed-time recorder con- S Records the Total Time the EVENT Input Has Been taining a factory-calibrated, low-temperature-coefficient Active High and Number of Events (Falling Edges RC time base that eliminates the need for an external of EVENT) That Have Occurred crystal. Using EEPROM technology to maintain data in S 32-Bit, Nonvolatile, Elapsed Time Counter (ETC) the absence of power, the DS1683 requires no backup Monitors Event Duration with Quarter Seconds power source. The DS1683 detects and records the num- Resolution and Provides 34 Years of Total Time ber of falling edge transitions on the EVENT pin as well Accumulation as the total cumulative time that the EVENT pin is held S Nonvolatile 16-Bit Event Counter Records the high. The ALARM pin alerts the user when the total time Number of Falling Edges Seen by the EVENT Pin accumulated equals or exceeds the user-programmed S Calibrated, Low-Temperature-Coefficient RC Time alarm value, or when the total number of events equals or exceeds the user-programmed alarm value. The polar- Base ity of the open-drain ALARM pin can be programmed S 16 Bytes of User EEPROM to either drive low or become high impedance upon an S Password Protection Scheme (4 Bytes) alarm condition. The DS1683 is ideal for applications that 2 S I C-Compatible Interface monitor the total amount of time that a device has been in operation and/or the number of uses since inception S +2.5V to +5.5V Operating Voltage Range service, repair, or last calibration. Applications Ordering Information appears at end of data sheet. High-Temp, Rugged, Industrial Applications Where Vibration or Shock Could Damage a Quartz Crystal For related parts and recommended products to use with this part, Any System Where Time-of-Use is Important to refer to www.maximintegrated.com/DS1683.related. Track Power-on-Time Recorder For pricing, delivery, and ordering information, please contact Maxim Direct at 19-6388 Rev 0 6/12 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com.DS1683 Total-Elapsed-Time and Event Recorder with Alarm ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Maximum Junction Temperature .....................................+150NC Voltage Range on V , ALARM, SDA, SCL ........-0.5V to +6.0V Operating Temperature Range .......................... -40NC to +85NC CC Voltage Range on EVENT ........................-0.5V to (V + 0.5V), Programming Temperature Range ....................... 0NC to +70NC CC not to exceed +6.0V Storage Temperature Range ............................ -55NC to +150NC Continuous Power Dissipation (T = +70NC) Lead Temperature (soldering, 10s) ................................+300NC A Soldering Temperature (reflow) ......................................+260NC SO (derate 5.9mW/NC above +70NC) .......................470.6mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS (T = -40NC to +85NC, unless otherwise noted.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V (Note 1) 2.5 5.5 V CC Input Logic 1 (SCL, SDA) V 0.7 x V V + 0.3 V IH CC CC Input Logic 0 (SCL, SDA) V -0.3 0.3 x V V IL CC 0.3 x 0.5 x 0.7 x EVENT Input Trip Point V V ETP V V V CC CC CC EVENT Trip Point Hysteresis V 1% of V HYS CC Power-On Reset V 2.4 V POR DC ELECTRICAL CHARACTERISTICS (V = 2.5V to 5.5V, T = -40NC to +85NC, unless otherwise noted.) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Leakage I -1 +1 FA LI ALARM Output (I = 10mA) V 0.8 V OL OL SDA Output (I = 4mA) V 0.4 V OL OL Active Supply Current I (Note 1) 180 300 FA CCA EEPROM Write Current I (Note 1) 250 350 FA EE EVENT TIMING (V = 2.5V to 5.5V, T = -40NC to +85NC, unless otherwise noted.) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Time Event Minimum t (Note 1) 10 35 70 ms G Time Event Increment t (Note 1) 237.5 250 262.5 ms EI Time Event Max t (Note 2) 34 Years EM CLR ALM to Alarm Set (Note 2) 10 150 Fs Maxim Integrated 2