TMP102 datasheet(7/19 Pages) TI

7 / 19 page

CONFIGURATION REGISTER

ALERT (AL Bit)

CONVERSION RATE

EXTENDED MODE (EM)

TMP102

www.ti.com ............................................................................................................................................... SBOS397B – AUGUST 2007 – REVISED OCTOBER 2008

Table 6. 13-Bit Temperature Data Format

TEMPERATURE (°C)

DIGITAL OUTPUT (BINARY)

HEX

150

0 1001 0110 0000

0960

128

0 1000 0000 0000

0800

127.9375

0 0111 1111 1111

07FF

100

0 0110 0100 0000

0640

0 0101 0000 0000

0500

0 0100 1011 0000

04B0

0 0011 0010 0000

0320

0 0001 1001 0000

0190

0.25

0 0000 0000 0100

0004

0 0000 0000 0000

0000

–0.25

1 1111 1111 1100

1FFC

–25

1 1110 0111 0000

1E70

–55

1 1100 1001 0000

1C90

The Configuration Register is a 16-bit read/write

The AL bit is a read-only function. Reading the AL bit

will provide information about the comparator mode

modes

the

temperature

sensor.

Read/write

status. The state of the POL bit inverts the polarity of

operations are performed MSB first. The format and

data returned from the AL bit. For POL = 0, the AL bit

power-up/reset value of the Configuration Register is

will read as '1' until the temperature equals or

shown in Table 7. For compatibility, the first byte

exceeds THIGH for the programmed number of

corresponds to the Configuration Register in the

consecutive faults, causing the AL bit to read as '0'.

TMP75 and TMP275. All registers are updated byte

The AL bit will continue to read as '0' until the

by byte.

temperature falls below TLOW for the programmed

number of consecutive faults, when it will again read

Table 7. Configuration and Power-Up/Reset

as '1'. The status of the TM bit does not affect the

Format

status of the AL bit.

BYTE

POL

The conversion rate bits, CR1 and CR0, configure the

TMP102 for conversion rates of 8Hz, 4Hz, 1Hz, or

CR1

CR0

0.25Hz. The default rate is 4Hz. The TMP102 has a

typical conversion time of 26ms. To achieve different

conversion rates, the TMP102 makes a conversion

and after that powers down and waits for the

appropriate delay set by CR1 and CR0. Table 8

The Extended mode bit configures the device for

shows the settings for CR1 and CR0.

Normal mode operation (EM = 0) or Extended mode

operation

(EM

1).

Normal

mode,

the

Table 8. Conversion Rate Settings

Temperature

and

high-

and

low-limit

CR1

CR0

CONVERSION RATE

registers use a 12-bit data format. Normal mode is

used to make the TMP102 compatible with the

0.25Hz

TMP75.

1Hz

Extended mode (EM = 1) allows measurement of

4Hz (default)

temperatures

above

+128°C

configuring

the

8Hz

Temperature

and

high-

and

low-limit

registers, for 13-bit data format.

Submit Documentation Feedback

Product Folder Link(s): TMP102

TMP102 датащи(PDF) 7 Page - Texas Instruments

TMP102 датащи(HTML) 7 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

датащи скачать

ссылки URL