DESCRIPTION
   The DS1616 is an integrated temperature/data recorder. It combines a real-time clock (RTC), temperature sensor, and a three input muxed 8-bit Analog-to-Digital Converter (ADC). Data logging is supported for all four data channels and the and histogram functionality is supported for the temperature sensor and ADC Channel 1 only. A programmable sample rate feature makes the device ideal for applications requiring datalogging over short or long time frames.

FEATURES
◾ Measures four channels of data:
   - Integrated 8-bit temperature sensor
   - Integrated 8-bit analog-to-digital
      converter (ADC) with a three-input mux
◾ Digital thermometer measures temperature
   -40°C to +85°C in +0.5°C increments with
   ± 2°C accuracy
◾ Real-time clock/calendar (RTC) in BCD
   format counts seconds, minutes, hours, date,
   month, day of the week, and year with leap
   year compensation; fully Y2K-compliant
◾ Automatically wakes up and measures
   temperature and/or ADC data at user
   programmable intervals from 1 to 255
   minutes
◾ 2048-byte datalog memory
◾ Records long-term temperature histogram in
   63 bins with +2.0C resolution
◾ Records long-term ADC data histogram in 64
   bins with 4-bit resolution/bin (32 mV/bin) for
   ADC Channel 1
◾ Programmable temperature-high and -low
   alarm trip points
◾ Programmable ADC data-high and -low alarm
   trip points
◾ Records time stamp and duration when
   temperature or ADC Channel 1 Data leaves
   the interval specified by the trip points
◾ Two serial interface options:
   - 3-wire synchronous serial interface
   - Asynchronous serial interface compatible
      with standard UARTs
◾ Memory partitioned into 32-byte pages for
   packetizing data
◾ On-chip 16-bit CRC generator to safeguard
   data read operations in asynchronous
   communications mode
◾ Unique, factory lasered 64-bit serial number