Table 7-11. Configuration Register Field Description (continued)

Bit

Field

Type

Reset

Description

12

FH

R

0

Flag high temperature

0 = High temperature limit not crossed

1 = High temperature limit crossed

11

FL

R

0

Flag low temperature

0 = Low temperature limit not crossed

1 = Low temperature limit crossed

10

LC

R/W

0

Latch control bit

0 = Flag bits are cleared on read

1 = Flag bits are latched

9:8

M[1:0]

R/W

10

Conversion mode select

00 = Shutdown mode

01 = One shot conversion mode

1x = Continuous conversion mode

7

ETM

R/W

0

Extended temperature mode select

0 = Mode is disabled

1 = Mode is enabled

6:0

Reserved

R

0

Reserved

7.6.3 Temperature Low Limit Register (P[1:0] = 10) [reset = F600h]

The temperature low limit register is used to store the low temperature threshold for the device low limit flag. The

default power up reset value is -10 °C. The power on default value is valid only when ETM = 0. At the end of

each temperature conversion, the device compares the temperature result with the temperature low limit register.

If the temperature result is less than the threshold set in this register, the FL bit in the configuration register is

set.

When the ETM bit in the configuration register is updated, it is strongly recommended that the user update the

low limit register.

Note

When the ETM bit is set to 0, any writes to the EM bit will be ignored.

Table 7-12. Temperature Low Limit Register (ETM = 0)

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

L[11:0]

EM

Reserved

R/W-F60h

R/W-0

R-0h

Table 7-13. Temperature Low Limit Register (ETM = 0) Field Description

Bit

Field

Type

Reset

Description

15:4

L[11:0]

R/W

F60h

12-bit temperature low limit threshold

3

EM

R/W

0

Don't care when ETM = 0

2:0

Reserved

R

0h

Reserved

Table 7-14. Temperature Low Limit Register (ETM = 1)

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

L[12:0]

Reserved

R/W-F600h

R-0h

Table 7-15. Temperature Low Limit Register (ETM = 1) Field Description

Bit

Field

Type

Reset

Description

15:3

L[12:0]

R/W

F600h

13-bit temperature low limit threshold

2:0

Reserved

R

0h

Reserved

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TMP144

SBOS891A – OCTOBER 2018 – REVISED FEBRUARY 2021

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