TMP411

SBOS383A − FEBRUARY 2007

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8

Table 2. Decimal Fraction Temperature Data Format (Local and Remote Temperature Low Bytes)

REMOTE TEMPERATURE

REGISTER LOW BYTE

VALUE

LOCAL TEMPERATURE REGISTER LOW BYTE VALUE

0.0625

°C RESOLUTION

0.5

°C RESOLUTION

0.25

°C RESOLUTION

0.125

°C RESOLUTION

0.0625

°C RESOLUTION

TEMP

(

°C)

STANDARD

AND EXTENDED

BINARY

HEX

STANDARD

AND EXTENDED

BINARY

HEX

STANDARD

AND EXTENDED

BINARY

HEX

STANDARD

AND EXTENDED

BINARY

HEX

STANDARD

AND EXTENDED

BINARY

HEX

0.0000

0000 0000

00

0000 0000

00

0000 0000

00

0000 0000

00

0000 0000

00

0.0625

0001 0000

10

0000 0000

00

0000 0000

00

0000 0000

00

0001 0000

10

0.1250

0010 0000

20

0000 0000

00

0000 0000

00

0010 0000

20

0010 0000

20

0.1875

0011 0000

30

0000 0000

00

0000 0000

00

0010 0000

20

0011 0000

30

0.2500

0100 0000

40

0000 0000

00

0100 0000

40

0100 0000

40

0100 0000

40

0.3125

0101 0000

50

0000 0000

00

0100 0000

40

0100 0000

40

0101 0000

50

0.3750

0110 0000

60

0000 0000

00

0100 0000

40

0110 0000

60

0110 0000

60

0.4375

0111 0000

70

0000 0000

00

0100 0000

40

0110 0000

60

0111 0000

70

0.5000

1000 0000

80

1000 0000

80

1000 0000

80

1000 0000

80

1000 0000

80

0.5625

1001 0000

90

1000 0000

80

1000 0000

80

1000 0000

80

1001 0000

90

0.6250

1010 0000

A0

1000 0000

80

1000 0000

80

1010 0000

A0

1010 0000

A0

0.6875

1011 0000

B0

1000 0000

80

1000 0000

80

1010 0000

A0

1011 0000

B0

0.7500

1100 0000

C0

1000 0000

80

1100 0000

C0

1100 0000

C0

1100 0000

C0

0.8125

1101 0000

D0

1000 0000

80

1100 0000

C0

1100 0000

C0

1101 0000

D0

0.8750

1110 0000

E0

1000 0000

80

1100 0000

C0

1110 0000

E0

1110 0000

E0

0.9385

1111 0000

F0

1000 0000

80

1100 0000

C0

1110 0000

E0

1111 0000

F0

REGISTER INFORMATION

The TMP411 contains multiple registers for holding

configuration information, temperature measurement

results, temperature comparator maximum/minimum,

limits, and status information. These registers are

described in Figure 12 and Table 3.

POINTER REGISTER

Figure 12 shows the internal register structure of the

TMP411. The 8-bit Pointer Register is used to address a

given data register. The Pointer Register identifies which

of the data registers should respond to a read or write

command on the Two-Wire bus. This register is set with

every write command. A write command must be issued

to set the proper value in the Pointer Register before

executing a read command. Table 3 describes the pointer

address of the registers available in the TMP411. The

power-on reset (POR) value of the Pointer Register is 00h

(0000 0000b).

THERM Hysteresis Register

Resolution Register

Configuration Register

Status Register

Identification Registers

Consecutive Alert Register

Local Temperature Min/Max

Conversion Rate Register

Remote Temperature Min/Max

Local and Remote Limit Registers

Local and Remote Temperature Registers

SDA

SCL

Pointer Register

I/O

Control

Interface

Figure 12. Internal Register Structure