Measured

Temperature

T

HIGH

T

LOW

ALERT PIN

(Comparator Mode)

POL = 0

ALERT PIN

(Interrupt Mode)

POL = 0

ALERT PIN

(Comparator Mode)

POL = 1

ALERT PIN

(Interrupt Mode)

POL = 1

Read

Read

Time

Read

TMP102-Q1

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SBOS702C – OCTOBER 2014 – REVISED DECEMBER 2015

7.5.3.1 Shutdown Mode (SD)

The Shutdown-mode bit saves maximum power by shutting down all device circuitry other than the serial

interface, reducing current consumption to typically less than 0.5

μA. Shutdown mode enables when the SD bit is

1; the device shuts down when current conversion is completed. When SD is equal to 0, the device maintains a

continuous conversion state.

7.5.3.2 Thermostat Mode (TM)

The thermostat-mode bit indicates to the device whether to operate in comparator mode (TM = 0) or Interrupt

mode (TM = 1). For more information on comparator and interrupt modes, see the High-Limit and Low-Limit

Registers section.

7.5.3.3 Polarity (POL)

The polarity bit allows the user to adjust the polarity of the ALERT pin output. If the POL bit is set to 0 (default),

the ALERT pin becomes active low . When the POL bit is set to 1, the ALERT pin becomes active high and the

state of the ALERT pin is inverted. The operation of the ALERT pin in various modes is shown in Figure 14

Figure 14. Output Transfer Function Diagrams

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