Measured

Temperature

T

HIGH

T

LOW

FHBit

(TransparentMode)

Read

Read

Time

Read

FLBit

(TransparentMode)

FHBit

(LatchMode)

FLBit

(LatchMode)

TMP103

SBOS545B – FEBRUARY 2011 – REVISED JANUARY 2016

www.ti.com

Programming (continued)

Figure 12. Temperature Flag Functional Diagram

The latch bit (LC) in the configuration register is used to latch the value of the flag bits (FH and FL) until the

master issues a read command to the configuration register. The flag bits are set to 0 if a read command is

received by the TMP103, or if LC = 0 and the temperature is within the temperature limits. The power-on default

values for these bits are FH = 0, FL = 0, and LC = 0.

7.5.2 Conversion Rate

The conversion rate bits, CR1 and CR0 located in the Configuration Register, configure the TMP103 for

conversion rates of 8 Hz, 4 Hz, 1 Hz, or 0.25 Hz (default). The TMP103 has a typical conversion time of 26 ms.

To achieve different conversion rates, the TMP103 performs a single conversion and then powers down and

waits for the appropriate delay set by CR1 and CR0. Table 1 lists the settings for CR1 and CR0.

Table 1. Conversion Rate Settings

CR1

CR0

CONVERSION RATE

0

0

0.25 Hz (default)

0

1

1 Hz

1

0

4 Hz

1

1

8 Hz

12

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