LM75B
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?NXP B.V. 2014. All rights reserved.
Product data sheet
Rev. 5 22 January 2014
14 of 37
NXP Semiconductors
LM75B
Digital temperature sensor and thermal watchdog
Fig 7. Write configuration register (1-byte data)
1 24
1
1
S
DA
CL
0 0 1 A2 A1 A0 W A
0 0 0 0 0 0 0 1 A 0 0 0 D4 D3 D2 D1 D0 A
P
2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9
START
STOP
write
device
acknowledge
device
acknowledge
device
kn wl
device address
pointer byte
configuration data byte
Fig 8. Read configuration register including pointer byte (1-byte data)
1
2
SCL
SDA
(next)
(next)
1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9
device address
pointer byte
START
RE-START
write
device
acknowledge
device
acknowledge
0 0 0 0 0 0 0 1 A
RS
1
S
0 0 1 A2 A1 A0 W A
CL (cont.)
DA (cont.)
1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9
device address
data byte from device
STOP
read
master not
acknowledged
device
acknowled e
D7 D6 D5 D4 D3 D2 D1 D0
P
1 0 0 1 A2 A1 A0 R A
NA
Fig 9. Read configuration or temp register with preset pointer (1-byte data)
START
S
CL
DA
1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9
device address
data byte from device
STOP
read
master not
acknowledged
device
kn wl
D7 D6 D5 D4 D3 D2 D1 D0
P
1 0 0 1 A2 A1 A0 R A
NA
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