SA56004X Datasheet, PDF (19/36 Pages) NXP Semiconductors – 1 Degrees Celcious accurate, SMBus-compatible, 8-pin, remote/local digital temperature sensor with over temperature alarms

NXP Semiconductors
SA56004X
Digital temperature sensor with overtemperature alarms
SCLK
123456 78
SDATA
a6 a5 a4 a3 a2 a1 a0
S
W
START
device address
9123456789
D7 D6 D5 D4 D3 D2 D1 D0
A
A
device register command
(cont.)
(cont.)
SCLK
1 2 3 45 6 78 9
SDATA
D7 D6 D5 D4 D3 D2 D1 D0
A
data to be written to register
P
STOP
002aad219
a. Write Byte format (to write a data byte to the device register)
SCLK
123456 78
SDATA
a6 a5 a4 a3 a2 a1 a0
S
W
START
device address
9123456789
(cont.)
D7 D6 D5 D4 D3 D2 D1 D0
(cont.)
A
AP
device register command
STOP
SCLK
123456 789123456789
SDATA
a6 a5 a4 a3 a2 a1 a0
S
R
RESTART
device address
D7 D6 D5 D4 D3 D2 D1 D0
A
NA P
data from device register
STOP
002aad220
b. Read Byte format (to read a data byte from the device register)
(cont.)
SCLK
123456 789123456789
(cont.)
SDATA
a6 a5 a4 a3 a2 a1 a0
S
R
D7 D6 D5 D4 D3 D2 D1 D0
A
NA P
RESTART
device address
data from device register
STOP
002aad221
c. Receive Byte format (to read a data byte from already pointed register)
SCLK
123456 789123456789
SDATA
a6 a5 a4 a3 a2 a1 a0
D7 D6 D5 D4 D3 D2 D1 D0
S
WA
AP
START
device address
device register command
STOP
002aad222
d. Send Byte format
Fig 9. SMBus interface protocols
SA56004X_5
Product data sheet
Rev. 05 — 22 May 2008
© NXP B.V. 2008. All rights reserved.
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