THigh_Limit

TLow_Limit

Temperature

Conversions

ALERT pin

Polarity = 0b

ALERT pin

Polarity = 1b

I

2C Read

Temperature

Figure 7-4. Alert Mode

7.4 Device Functional Modes

The TMP110 can be configured to operate in continuous or one-shot mode. This flexibility enables users to

balance the requirements of power efficiency and performance.

7.4.1 Continuous-Conversion Mode

When the Shutdown bit is set to 0b in the configuration register, the device operates in continuous conversion

mode. Figure 7-5 shows the device in a continuous conversion cycle. In this mode, the device performs

conversion at fixed intervals and updates the temperature result register, ALERT pin and flag at the end of

every conversion. The typical active conversion time is around 10 ms.

Start of

conversion

Ac ve conversion me

(tACT)

Standby Time

(tSTANDBY)

Conversion Period

(tConv_Period)

Figure 7-5. Continuous Conversion Cycle Timing Diagram

The Conversion_Rate[1:0] bits in the configuration register controls the rate at which the conversions are

performed. The device typically consumes 55 µA during conversion and 2.6 µA during the low power standby

period. By decreasing the rate at which the conversion are performed, the application can benefit from reduced

average current consumption in continuous mode.

Use Equation 1 to calculate the average current in continuous mode.

Average Current = ((IDD_ACTIVE × tACT) + (IDD_SB × tSTANDBY)) / tConv_Period

(1)

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TMP110

SNIS233 – FEBRUARY 2024

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