DS1621V+ Maxim Integrated Products, DS1621V+ Datasheet
DS1621V+
Specifications of DS1621V+
Related parts for DS1621V+
DS1621V+ Summary of contents
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FEATURES § Temperature measurements require no external components § 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 (2-byte transfer) § Wide ...
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... DS1621S+T&R DS1621 (See Note) DS1621V DS1621V DS1621V+ DS1621V (See Note) DS1621V/T&R DS1621V DS1621V+T&R DS1621V (See Note) Note: A “+” symbol will also be marked on the package near the Pin 1 indicator. Table 1. DETAILED PIN DESCRIPTION PIN SYMBOL DESCRIPTION 1 SDA Data input/output pin for 2-wire serial communication port. ...
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Figure 1. DS1621 FUNCTIONAL BLOCK DIAGRAM SCL ADDRESS AND SDA I/O CONTROL STATUS REGISTER & CONTROL LOGIC TEMPERATURE SENSOR HIGH TEMP TRIGGER, TH LOW TEMP TRIGGER, TL DIGITAL COMPARATOR/LOGIC OUT ...
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Table 2. TEMPERATURE/DATA RELATIONSHIPS TEMPERATURE +125°C +25°C +½°C +0°C -½°C -25°C -55°C Since data is transmitted over the 2-wire bus MSB first, temperature data may be written to/read from the DS1621 as either a single byte (with temperature resolution of ...
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In one-shot mode, the DS1621 performs a single temperature conversion when a Start Convert T command is issued. When the conversion is complete, the device enters a low-power idle state and remains in that state until a single temperature conversion ...
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TLF = Temperature Low Flag. This bit will be set to “1” when the temperature is less than or equal to the value of TL. It will remain “1” until reset by writing “0” into this location or removing power ...
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Each data transfer is initiated with a START condition and terminated with a STOP condition. The number of data bytes transferred between START and STOP conditions is not limited and is determined by the master device. The information is transferred ...
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The DS1621 may operate in the following two modes: 1. Slave receiver mode: Serial data and clock are received through SDA and SCL. After each byte is received an acknowledge bit is transmitted. START and STOP conditions are recognized as ...
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Figure 5. 2-WIRE SERIAL COMMUNICATION WITH DS1621 ...
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COMMAND SET Data and control information is read from and written to the DS1621 in the format shown in Figure 5. To write to the DS1621, the master will issue the slave address of the DS1621 and the R/ “0”. ...
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Table 3. DS1621 COMMAND SET INSTRUCTION DESCRIPTION TEMPERATURE CONVERSION COMMANDS Read Temperature Read last converted temperature value from temperature register. Read Counter Reads value of Count_Remain Read Slope Reads value of the Count_Per_C Start Convert T Initiates temperature conversion. Stop ...
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MEMORY FUNCTION EXAMPLE Example: Bus master sets up DS1621 for continuous conversion and thermostatic function. BUS MASTER DS1621 MODE MODE ...
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ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Range Storage Temperature Range Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated ...
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Active Supply I CC Current Standby Supply I STBY Current Thermostat Output Output V OUT OL Voltage Temperature Conversion -55°C to +85°C Temperature Conversion +85°C to +125° Write Communication Only 1 mA Source 2.4 ...
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AC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Temperature T TC Conversion Time NV Write Cycle t WR Time SCL Clock f SCL Frequency Bus Free Time t BUF Between a STOP and START Condition Hold Time t HD:STA (Repeated) START Condition Low ...
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NOTES: 1. All voltages are referenced to ground. 2. I/O pins of fast mode devices must not obstruct the SDA and SCL lines specified with T pin open. CC OUT 4. I specified with V at ...