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TMP103

SBOS545D – FEBRUARY 2011 – REVISED DECEMBER 2018

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7.6.3 Configuration Register

The Configuration Register is an eight-bit read/write register used to store bits that control the operational modes

of the temperature sensor. Read/write operations are performed MSB first. The format and power-up and reset

value of the Configuration Register is shown in Table 7. All registers are updated at the end of the data byte.

Table 7. Configuration and Power-Up and Reset Format

D7

D6

D5

D4

D3

D2

D1

D0

ID

CR1

CR0

FH

FL

LC

M1

M0

0

0

0

0

0

0

1

0

7.6.4 Temperature Limit Registers

The THIGH and TLOW registers are used to store the temperature limit thresholds for the TMP103 watchdog

function. At the end of each temperature measurement, the TMP103 compares the temperature results to each

of these limits. If the temperature result is greater than the THIGH limit, then the FH bit in the configuration register

is set to 1. If the temperature result is less than the TLOW limit, then the FL bit in the configuration register is set

to 1; see Figure 12.

Table 8 and Table 9 describe the format for the THIGH and TLOW registers. Power-up reset values for THIGH and

TLOW are: THIGH = 60°C and TLOW = –10°C. The format of the data for THIGH and TLOW is the same as for the

Temperature Register.

Table 8. THIGH Register

D7

D6

D5

D4

D3

D2

D1

D0

H7

H6

H5

H4

H3

H2

H1

H0

Table 9. TLOW Register

D7

D6

D5

D4

D3

D2

D1

D0

L7

L6

L5

L4

L3

L2

L1

L0