DS1775R/TR1 DALLAS [Dallas Semiconductor], DS1775R/TR1 Datasheet
DS1775R/TR1
Related parts for DS1775R/TR1
DS1775R/TR1 Summary of contents
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... Thermal Watchdog in thermometer mode § Space–conscious SOT23–5 package with low thermal time constant ORDERING INFORMATION Part Number DS1775R/TRL DS1775R/TR1 DS1775R/TR2 DS1775R/TR3 * "R" denotes SOT 23-5 Package DESCRIPTION The DS1775 SOT23-5 Digital Thermometer and Thermostat provides temperature readings which indicate the temperature of the device. Thermostat settings and temperature readings are all communicated to/from the DS1775 over a simple 2– ...
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As a digital thermometer, the DS1775 is software compatible with the DS75 2–Wire Thermal Watchdog. The DS1775 is assembled in a compact SOT23–5 package allowing for low–cost thermal monitoring/control in space–constrained applications. The low thermal mass allows for time constants ...
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O.S. output will become active only after the measured temperature exceeds the respective trippoint a consecutive number of times; the number of consecutive conversions beyond the limit to generate an O.S. is programmable. The power–up state of the DS1775 ...
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The resolution of the temperature conversion is configurable (9, 10, 11 bits), with 9–bit readings the default state. This equates to a temperature resolution of 0.5 C, 0.25 C, 0.125 C, or 0.0625 C. Following each conversion, thermal ...
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O.S. OUTPUT TRANSFER FUNCTION Figure 2 Regardless of the mode chosen, the O.S. output is open–drain and the active state is set in the configuration register. The power–up default is active low. Refer to the “OPERATION–Programming” section for instructions in ...
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The only exception is at power–up, in which case the pointer will always be set to 00h, the temperature register. The pointer address must always proceed data in writing to a register, regardless of which address is currently selected. Please ...
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Thermometer Resolution Configuration Table Thermometer Resolution Thermostat Setpoints Programming The thermostat registers (T OS accessed by setting the DS1775 data pointer to the 03h location, and to the 02h ...
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Data transfer may be initiated only when the bus is not busy. During data transfer, the data line must remain stable whenever the clock line is HIGH. Changes in the data line while the clock line is high will be ...
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Figure 5 details how data transfer is accomplished on the two–wire bus. Depending upon the state of the R/W bit, two types of data transfer are possible: 1. Data transfer from a master transmitter to a slave receiver. The first ...
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SERIAL COMMUNICATION WITH DS1775 Figure DS1775 102299 ...
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ABSOLUTE MAXIMUM RATINGS* Voltage on VDD, Relative to Ground Voltage on any other pin, Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any ...
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AC ELECTRICAL CHARACTERISTICS: 2–WIRE INTERFACE PARAMETER SCL clock frequency Bus free time between a STOP and START condition Hold time (repeated) START condition LOW period of SCL HIGH period of SCL Set-up time for a repeated START Data hold time ...
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TIMING DIAGRAMS Figure DS1775 102299 ...