Datasheet
LM75
Digital Temperature Sensor and Thermal
Watchdog with 2-Wire Interface
_______________________________________________________________________________________ 7
Figure 4. I
2
C-Compatible Timing Diagram (Read)
ADDRESS
BYTE
ADDRESS BYTE
ADDRESS
BYTE
ADDRESS
BYTE
DATA
BYTE
(a) TYPICAL 2-BYTE READ FROM PRESET POINTER LOCATION SUCH AS TEMP, T
HIGH
, T
LOW
.
(b) TYPICAL POINTER SET FOLLOWED BY IMMEDIATE READ FOR 2-BYTE REGISTER SUCH AS TEMP, T
HIGH
, T
LOW
.
(c) TYPICAL 1-BYTE READ FROM CONFIGURATION REGISTER WITH PRESET POINTER.
MOST SIGNIFICANT
DATA BYTE
LEAST SIGNIFICANT
DATA BYTE
POINTER BYTE
MOST SIGNIFICANT
DATA BYTE
LEAST SIGNIFICANT
DATA BYTE
ACK BY
LM75
ACK BY
MASTER
ACK BY
LM75
ACK BY
LM75
ACK BY
MASTER
ACK BY
LM75
ACK BY
MASTER
START
BY
MASTER
START
BY
MASTER
REPEAT
START
BY
MASTER
START
BY
MASTER
STOP
COND BY
MASTER
STOP
COND BY
MASTER
STOP
COND BY
MASTER
NO ACK BY
MASTER
NO
ACK BY
MASTER
NO
ACK BY
MASTER