Datasheet

D7 D6 D5 D4 D3 D2 D1 D0
1 9 1 9
Ack
by
LM95245
Start by
Master
Repeat
Start by
Master
Frame 1
Serial Bus Address Byte
Frame 2
Command Byte
Ack
by
LM95245
D7 D6 D5 D4 D3 D2 D1 D0
1 9 1 9
Ack
by
LM95245
Frame 3
Serial Bus Address Byte
Frame 4
Data Byte from the LM95245
No Ack
by
Master
Stop
by
Master
SMBCLK
SMBDAT
SMBCLK
(Continued)
SMBDAT
(Continued)
R/W
A5 A3 A2 A0A6 A4 A1
R/W
A5 A3 A2 A0A6 A4 A1
D7 D6 D5 D4 D3 D2 D1 D0
1 9 1 9
Ack
by
LM95245
Start by
Master
Frame 1
Serial Bus Address Byte
Frame 2
Data Byte from the LM95245
NoAck
by
Master
SMBCLK
SMBDAT
Stop
by
Master
R/W
A5 A3 A2
A0
A6 A4 A1
D7 D6 D5 D4 D3 D2 D1 D0
1 9 1 9
Ack
by
LM95245
Start by
Master
Frame 1
Serial Bus Address Byte
Frame 2
Command Byte
Ack
by
LM95245
D7 D6 D5 D4 D3 D2 D1 D0
1 9
Frame 3
Data Byte
Ack by
LM95245
Stop
by
Master
SMBCLK
SMBDAT
SMBCLK
(Continued)
SMBDAT
(Continued)
R/W
A5 A3 A2 A0A6 A4 A1
LM95245
SNIS148G –OCTOBER 2007–REVISED MARCH 2013 www.ti.com
Figure 15. (b) Serial Bus Write to the Internal Command Register Followed by a Data Byte
Figure 16. (c) Serial Bus byte Read from a Register with the Internal Command Register Preset to
Desired Value
Figure 17. (d) Serial Bus Write followed by a Repeat Start and Immediate Read
The data registers in the LM95245 are selected by the Command Register. At power-up the Command Register
is set to “00”, the location for the Read Local Temperature Register. The Command Register latches the last
location it was set to. Each data register in the LM95245 falls into one of four types of user accessibility:
1. Read only
2. Write only
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Product Folder Links: LM95245