D7

D6

D5

D4

D3

D2

D1

D0

1

9

1

9

Ack

by

LM73

SMBCLK

(continued)

SMBDAT

(continued)

Stop

by

Master

D15 D14 D13 D12 D11 D10

D9

D8

Ack

by

LM73

Frame 3

Data Byte to LM73

Frame 4

Data Byte to LM73

1

9

1

9

Ack

by

LM73

Start by

Master

SMBCLK

SMBDAT

R/W

0

1

A2

A0

1

0

A1

Ack

by

LM73

Frame 1

Serial Bus Address Byte

Frame 2

Pointer Byte

0

0

0

0

0

P2

P1

P0

1

9

1

9

Ack

by

LM73

Start by

Master

SMBCLK

SMBDAT

R/W

0

1

A2

A0

1

0

A1

Ack

by

LM73

Frame 1

Serial Bus Address Byte

Frame 2

Pointer Byte

0

0

0

0

0

P2

P1

P0

D7

D6

D5

D4

D3

D2

D1

D0

1

9

Frame 3

Data Byte to LM73

Ack

by

LM73

Stop

by

Master

D7

D6

D5

D4

D3

D2

D1

D0

1

9

Ack

by

LM73

Repeat

Start by

Master

NoAck

by

Master

SMBCLK

(continued)

SMBDAT

(continued)

Stop

by

Master

R/W

0

1

A2

A0

1

0

A1

1

9

Frame 3

Serial Bus Address Byte

Frame 4

Data Byte from LM73

1

9

1

9

Ack

by

LM73

Start by

Master

SMBCLK

SMBDAT

R/W

0

1

A2

A0

1

0

A1

Ack

by

LM73

Frame 1

Serial Bus Address Byte

Frame 2

Pointer Byte

0

0

0

0

0

P2

P1

P0

LM73

www.ti.com

SNIS141F – OCTOBER 2005 – REVISED OCTOBER 2015

Figure 11. Typical Pointer Set Followed by Immediate Read of a 1-Byte Register

7.3.6.2 Writing to the LM73

Figure 12. Typical 1-Byte Write

Figure 13. Typical 2-Byte Write

7.4 Device Functional Modes

7.4.1 Shutdown Mode

Shutdown Mode is enabled by writing a “1” to the Full Power Down Bit, Bit 7 of the Configuration Register, and

holding it high for at least the specified maximum conversion time at the existing temperature resolution setting.

(see Temperature Conversion Time specifications under the Temperature-to-Digital Converter Characteristics).

For example, if the LM73 is set for 12-bit resolution before shutdown, then Bit 7 of the Configuration register

must go high and stay high for the specified maximum conversion time for 12-bits resolution.

Copyright © 2005–2015, Texas Instruments Incorporated

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