Control/Status

(Read-Write)

Pointer = 00000100

Identification

(Read-Only)

Pointer = 00000111

Pointer Register

(selects register

for communication)

Interface

Data

Address

SMBDAT

SMBCLK

(Read-Write)

Pointer = 00000010

(Read-Write)

Pointer = 00000011

Temperature

(Read-Only)

Pointer = 00000000

Configuration

(Read-Write)

Pointer = 00000001

LM73

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SNIS141D – OCTOBER 2005 – REVISED MAY 2009

LM73 REGISTERS

The LM73's internal registers are selected by the Pointer register. The Pointer register latches the last location

that it was set to. The pointer register and all internal registers are described below. All registers reset at device

power up.

POINTER REGISTER

The diagram below shows the Pointer Register, the six internal registers to which it points, and their associated

pointer addresses.

Figure 11. Pointer Register

P7

P6

P5

P4

P3

P2

P1

P0

0

0

0

0

0

Register Select

Bits

Name

Description

7:3

Not Used

Must write zeros only.

2:0

Register Select

Pointer address. Points to desired register.

See table below.

Copyright © 2005–2009, Texas Instruments Incorporated

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