ds75u-t-r Maxim Integrated Products, Inc., ds75u-t-r Datasheet
ds75u-t-r
Related parts for ds75u-t-r
ds75u-t-r Summary of contents
Page 1
... DS75U+ (μMAX) – Clock Input – Open-Drain Thermostat Output – Address Input – Address Input – Address Input – Power Supply DS75 022108 ...
Page 2
... DS75 (see note) DS75U+T&R DS75 (see note) DS75S DS75 DS75S/T&R DS75 DS75U DS75 DS75U/T&R DS75 Note: A "+" symbol will also be marked on the package near the Pin 1 indicator Table 2. DETAILED PIN DESCRIPTION PIN SYMBOL DESCRIPTION 1 SDA Data input/output pin for 2-wire serial communication port. Open drain. ...
Page 3
Figure 1. DS75 FUNCTIONAL BLOCK DIAGRAM PRECISION REFERENCE V DD SCL SDA ADDRESS AND I/O CONTROL GND OVERSAMPLING DIGITAL MODULATOR DECIMATOR CONFIGURATION REGISTER TEMPERATURE REGISTER T AND T THERMOSTAT OS HYST REGISTERS COMPARATOR 3 ...
Page 4
ABSOLUTE MAXIMUM RATINGS* Voltage Relative to Ground DD Voltage on any other pin, Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * These are stress ratings only and functional operation of the device at these or ...
Page 5
AC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Resolution Temperature t Conversion Time SCL Frequency Bus Free Time Between a STOP and START Condition START and Repeated t HD:STA START Hold Time from Falling SCL Low Period of SCL High Period of SCL ...
Page 6
Figure 2. TIMING DIAGRAM Note: The DS75 does not delay the SDA line internally with respect to SCL for any length of time. OPERATION–MEASURING TEMPERATURE The DS75 measures temperature using a bandgap temperature sensing architecture. An on-board delta- sigma analog-to-digital ...
Page 7
Figure 3. TEMPERATURE, T bit 15 bit 14 MS Byte S 2 bit 7 bit Byte 2 2 Table 3. 12-BIT RESOLUTION TEMPERATURE/DATA RELATIONSHIP TEMPERATURE (°C) +125 +25.0625 +10.125 +0.5 0 -0.5 -10.125 -25.0625 -55 SHUTDOWN ...
Page 8
T comparison and the operating mode. The number of T comparison is equal to the conversion resolution set by the R1 and R0 bits in the configuration register. For example, it the resolution is ...
Page 9
CONFIGURATION REGISTER The configuration register allows the user to program various DS75 options such as conversion resolution, thermostat fault tolerance, thermostat polarity, thermostat operating mode, and shutdown mode. The configuration register is arranged as shown in Figure 5 and detailed ...
Page 10
Table 6. Fault Tolerance Configuration F1 F0 CONSECUTIVE OUT-OF-LIMITS CONVERSIONS TO TRIGGER O. REGISTER POINTER The four DS75 registers each have a unique two-bit pointer designation, which is defined in Table 7. ...
Page 11
START Condition: Signal generated by the master to indicate the beginning of a data transfer on the bus. The master generates a START condition by pulling SDA from high to low while SCL is high (see Figure 6). A “repeated” ...
Page 12
GENERAL 2-WIRE INFORMATION All data is transmitted MSb first over the 2-wire bus. One bit of data is transmitted on the 2-wire bus each SCL period. A pullup resistor is required on the SDA line and, ...
Page 13
Figure 9. 2-WIRE INTERFACE TIMING DS75 ...
Page 14
REVISION HISTORY REVISION DATE Deleted all references to flip-chip package. 022108 Added registered trademark symbol to µMAX. DESCRIPTION DS75 PAGES CHANGED 1, 2 ...