DS1620S Maxim Integrated Products, DS1620S Datasheet
DS1620S
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DS1620S Summary of contents
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... LOW T COM Digital Thermometer and Thermostat HIGH RST LOW GND COM DS1620S 8-Pin SOIC (208-mil HIGH RST LOW GND COM DS1620 8-Pin DIP (300-mil) - 3-Wire Input/Output - 3-Wire Clock Input and CONV Stand-alone Convert Input - 3-Wire Reset Input - Ground - High Temperature Trigger ...
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... PACKAGE MARKING DS1620 DS1620+ DS1620 (See Note) DS1620S DS1620S+ DS1620 (See Note) DS1620S/T&R DS1620S+T&R DS1620 (See Note) Note: A “+” symbol will also be marked on the package near the Pin 1 indicator DETAILED PIN DESCRIPTION Table 1 PIN SYMBOL 1 DQ Data Input/Output pin for 3-wire communication port. ...
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DS1620 FUNCTIONAL BLOCK DIAGRAM Figure 1 The DS1620 measures temperature using a bandgap-based temperature sensor. The temperature reading is provided in a 9–bit, two’s complement reading by issuing a READ TEMPERATURE command. The data is transmitted serially through the 3–wire ...
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Table 3 describes the exact relationship of output data to measured temperature. . TEMPERATURE/DATA RELATIONSHIPS Table 3 TEMP DIGITAL OUTPUT (Binary) +125˚C 0 11111010 +25˚C 0 00110010 +½˚C 0 00000001 +0˚C 0 00000000 -½˚C 1 11111111 -25˚C 1 11001110 -55˚C ...
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THERMOSTAT OUTPUT OPERATION Figure OPERATION AND CONTROL The DS1620 must have temperature settings resident in the TH and TL registers for thermostatic operation. A configuration/status register also determines the method of operation that the DS1620 will ...
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One–Shot Mode. If 1SHOT is 1, the DS1620 will perform one temperature conversion upon reception of the Start Convert T protocol. If 1SHOT is 0, the DS1620 will continuously perform temperature conversion. This bit is stored in nonvolatile ...
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Write TL [02h] This command writes to the TL (LOW TEMPERATURE) register. After issuing this command the next nine clock cycles clock in the 9–bit temperature limit which will set the threshold for operation of the T output. LOW Read ...
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DS1620 COMMAND SET Table 4 INSTRUCTION DESCRIPTION TEMPERATURE CONVERSION COMMANDS Read Temperature Reads last converted temperature value from temperature register. Read Counter Reads value of count remaining from counter. Read Slope Reads value of the slope accumulator. Start Convert T ...
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FUNCTION EXAMPLE Example: CPU sets up DS1620 for continuous conversion and thermostatic function. DS1620 MODE CPU MODE (3-WIRE ...
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WRITE DATA TRANSFER Figure 5 NOTE and t apply to both read and write data transfer ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature ...
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DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Thermometer Error Thermometer Resolution Logic 0 Output Logic 1 Output Input Resistance Active Supply Current Standby Supply Current Input Current on Each Pin Thermal Drift SINGLE CONVERT TIMING DIAGRAM (STAND-ALONE MODE) CONV AC ELECTRICAL CHARACTERISTICS ...
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AC ELECTRICAL CHARACTERISTICS PARAMETER Input Capacitance I/O Capacitance EEPROM AC ELECTRICAL CHARACTERISTICS PARAMETER EEPROM Write Cycle Time EEPROM Writes EEPROM Data Retention NOTES: 1. All voltages are referenced to ground. 2. Valid for design revisions D1 and above. The supply ...