Operating Instructions Digital Thermometer and Thermostat Demonstration Kit DS1620
chip in electronics
,small scale integrated circuits
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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