LM75ADP datasheet(13/24 Pages) NXP

13 / 24 page

LM75A_4

Product data sheet

Rev. 04 — 10 July 2007

13 of 24

NXP Semiconductors

LM75A

Digital temperature sensor and thermal watchdog

Fig 8.

Write Tos or Thyst register (2-byte data)

002aad036

123456789

SDA (cont.)

SCL (cont.)

D0 A

SDA

SCL

001

000000

(next)

123456789

device address

pointer byte

MSByte data

LSByte data

START

write

device

acknowledge

device

acknowledge

STOP

device

acknowledge

device

acknowledge

Fig 9.

Read Temp, Tos or Thyst register including pointer byte (2-byte data)

123456789

1001

A2 A1 A0

D7 D6 D5 D4 D3 D2 D1 D0 A'

D7 D6 D5 D4 D3 D2 D1 D0 NA

123456789

001

A2 A1 A0 W A

000000

P1 P0

(next)

SDA

SCL

SDA (cont)

SCL (cont)

002aad037

device address

pointer byte

device address

MSByte from device

LSByte from device

START

RE-START

write

device

acknowledge

device

acknowledge

read

master

acknowledge

master not

acknowledged

device

acknowledge

STOP

Fig 10. Read Temp, Tos or Thyst register with preset pointer (2-byte data)

123456789

A2 A1 A0

D7 D6 D5 D4 D3 D2 D1 D0 A' D7 D6 D5 D4 D3 D2 D1 D0 NA

SDA

SCL

002aad038

device address

MSByte from device

LSByte from device

START

read

master

acknowledge

master not

acknowledged

device

acknowledge

STOP

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