DS1631 Maxim Integrated Products, DS1631 Datasheet
DS1631
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DS1631 Summary of contents
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... Table 1 for Ordering Information DESCRIPTION The DS1631, DS1631A, and DS1731 digital thermometers provide 9, 10, 11, or 12-bit temperature readings over a -55°C to +125°C range. The DS1631 and DS1631A thermometer accuracy is ±0.5°C from 0°C to +70°C with 3.0V ≤ V 3.0V ≤ V ≤ ...
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... DS1631 in 150mil 8-Pin SO DS1631 in 150mil 8-Pin SO, 2500-Piece Tape-and-Reel DS1631A in 8-Pin μSOP DS1631A in 8-Pin μSOP, 3000-Piece Tape-and-Reel DS1631 in 208 mil 8-Pin SO DS1631 in Lead-Free 208 mil 8-Pin SO, 2000 Piece Tape- and-Reel DS1631 in 300 mil 8-Pin DIP DS1731 in 8-Pin μSOP DS1731 in 8-Pin μSOP, 3000-Piece Tape-and-Reel ...
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... CONFIGURATION REGISTER AND CONTROL LOGIC TEMPERATURE SENSOR and ΔΣ ADC TEMPERATURE REGISTER T REGISTER H T REGISTER L -0.5V to +6.0V -55°C to +125°C -55°C to +125°C See IPC/JEDEC J-STD-020A Specification +220° DS1631/DS1631A/DS1731 DIGITAL COMPARATOR/LOGIC T OUT ...
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... DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Supply Voltage V DD DS1631, DS1631A T ERR Thermometer Error DS1731 T ERR Thermometer Error Low-Level Input V IL Voltage High-Level Input V IH Voltage SDA Low-Level V OL1 Output Voltage V OL2 Input Current Each I/O Pin Active Supply I DD Current Standby Supply ...
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... and SCL pin open; SDA = V OUT [min [min] = 50ns DS1631/DS1631A/DS1731 = -55°C to +125°C.) A TYP MAX UNITS NOTES 93.75 187.5 ms 375 750 400 kHz µs µs µs µs µs 0.9 µs ns 1000 ns B 300 ns B µs ...
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... T DD SYMBOL CONDITION -55°C to +55°C EEWR t -55°C to +55°C EEDR 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 - and 0 DS1631/DS1631A/DS1731 = -55°C to +125°C.) A MIN TYP MAX UNITS 4 10 50k Writes 10 Years DS1731 +3 σ Mean -3 σ REFERENCE TEMPERATURE (° ...
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... Throughout this data sheet, the term “conversion” is used to refer to the entire temperature measurement and ADC sequence. The DS1631 and DS1731 always power- low-power idle state, and the Start Convert T command must be used to initiate conversions. The DS1631A begins conversions automatically at power-up in the mode determined by the configuration register’ ...
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... T H and T registers (see Figure 4) must be in two’s complement format H L and and T H and T registers is achieved using the Access DS1631/DS1631A/DS1731 bit 11 bit 10 bit bit 3 bit 2 bit DIGITAL OUTPUT (HEX) 7D00h ...
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... Figure 5. THERMOSTAT OUTPUT OPERATION LOGIC 1 LOGIC 0 CONFIGURATION REGISTER The configuration register allows the user to program various DS1631 options such as conversion resolution, T polarity, and operating mode. It also provides information to the user about conversion OUT status, EEPROM activity, and thermostat activity. The configuration register is arranged as shown in Figure 6 and detailed descriptions of each bit are provided in Table 5 ...
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... Continuous Conversion Mode. The Start Convert T command initiates continuous temperature conversions. RESOLUTION CONVERSION TIME R0 (BIT DS1631/DS1631A/DS1731 register. THF remains H register. TLF remains a L (MAX) 93.75ms 187.5ms 375ms 750ms ...
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... The DS1631, DS1631A, and DS1731 communicate over a bidirectional 2-wire serial data bus that consists of a serial clock (SCL) signal and serial data (SDA) signal. The DS1631, DS1631A, and DS1731 interface to the bus through their SCL input pins and open-drain SDA I/O pins. ...
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... WRITES The master can write data to the DS1631/DS1631A/DS1731 by issuing an Access Config, Access TH, or Access TL command following the control byte (see Figures 9b and 9d). Since the R/ byte was a 0 (“write”), the DS1631/DS1631A/DS1731 are already prepared to receive data. Therefore, after receiving an ACK in response to the command byte, the master device can immediately begin transmitting data ...
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... ACK in response to the command, the master must generate a repeated START followed by a control byte with the same slave address as the first control byte. However, this time the which tells the DS1631/DS1631A/DS1731 that a “read” is being performed. After the DS1631/DS1631A/DS1731 send an ACK in response to this control byte, it begins transmitting the requested data on the next clock cycle ...
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... Figure 9 ( e). 2-WIRE INTERFACE TIMING THERM = DS1631, DS1631A, or DS1731 DS1631/DS1631A/DS1731 ...
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... OPERATION EXAMPLE In this example, the master configures the DS1631/DS1631A/DS1731 (A conversions and thermostatic function. MASTER THERMETER* MODE MODE *THERMOMETER = DS1631, DS1631A, or DS1731 DATA (MSb first) START START condition from MASTER. 90h MASTER sends control byte with R/ ACK Acknowledge bit from THERMOMETER. ACh MASTER sends Access Config command ...