DS75LV Datasheet, PDF (8/13 Pages) Maxim Integrated Products – Digital Thermometer and Thermostat

DS75LV: Digital Thermometer and Thermostat
Table 3. Configuration Register Bit Descriptions
BIT NAME
FUNCTIONAL DESCRIPTION
0
Power-up state = 0
Reserved
The master can write to this bit, but it will always read out as a 0.
R1
Power-up state = 0
Conversion Resolution Bit 1
Sets conversion resolution (see Table 5)
R0
Power-up state = 0
Conversion Resolution Bit 0
Sets conversion resolution (see Table 5)
F1
Power-up state = 0
Thermostat Fault Tolerance Bit 1
Sets the thermostat fault tolerance (see Table 6).
F0
Power-up state = 0
Thermostat Fault Tolerance Bit 0
Sets the thermostat fault tolerance (see Table 6).
POL
Power-up state = 0
Thermostat Output (O.S.) Polarity
POL = 0 — O.S. is active low.
POL = 1 — O.S. is active high.
TM
Thermostat Operating Mode
Power-up state = 0
TM = 0 — Comparator mode.
TM = 1 — Interrupt mode.
See the OPERATION–Thermostat section for a detailed description of
these modes.
SD
Power-up state = 0
Shutdown
SD = 0 — Active conversion and thermostat operation.
SD = 1 — Shutdown mode.
See the SHUTDOWN MODE section for a detailed description of this
mode.
Table 4. Resolution Configuration
R1 R0
0
0
0
1
1
0
1
1
THERMOMETER
RESOLUTION
9-bit
10-bit
11-bit
12-bit
MAX CONVERSION
TIME
150ms
300ms
600ms
1200ms
Table 5. Fault Tolerance Configuration
F1 F0
0
0
0
1
1
0
1
1
CONSECUTIVE OUT-OF-LIMITS
CONVERSIONS TO TRIGGER O.S.
1
2
4
6
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