Operating Instructions Digital Thermometer and Thermostat Demonstration Kit DS1620

FEATURES

♦ Requires no external components

♦ Supply voltage range covers from 2.7V to 5.5V

♦ Measures temperatures from -55°C to +125°C in 0.5°C increments; Fahrenheit equivalent is -67°F to +257°F in 0.9°F increments

♦ Temperature is read as a 9-bit value

♦ Converts temperature to digital word in 1 second (max)

♦ Thermostatic settings are user-definable and nonvolatile

♦ Data is read from/written via a 3-wire serial interface (CLK, DQ, RST )

♦ Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system

♦ 8-pin DIP or SOIC (208-mil) packages

PIN DESCRIPTION

DQ - 3-Wire

Input/Output CLK/ CONV - 3-Wire

Clock Input and Stand-alone Convert Input

RST - 3-Wire Reset Input

GND - Ground

THIGH - High Temperature Trigger

TLOW - Low Temperature Trigger

TCOM - High/Low Combination Trigger

VDD - Power Supply Voltage (3V - 5V)

DS1620 FUNCTIONAL BLOCK DIAGRAM Figure 1

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