LM75 データシートの表示（PDF） - Maxim Integrated
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LM75 Datasheet PDF : 12 Pages
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Digital Temperature Sensor and Thermal
Watchdog with 2-Wire Interface
SDA
tSU:DAT
tLOW
SCL
tHD:DAT
tSU:STA
tHD:STA
tBUF
tSU:STO
tHIGH
tHD:STA
tR
tF
START
CONDITION
(S)
PARAMETERS ARE MEASURED FROM 10% TO 90%.
REPEATED START
CONDITION
(SR)
ACKNOWLEDGE
(A)
STOP
CONDITION
(P)
START
CONDITION
(S)
Figure 2. Serial Bus Timing
Table 3. Temperature, THYST, and TOS Register Definition
UPPER BYTE
LOWER BYTE
D15
D14 D13 D12 D11 D10 D9 D8
D7 D6 D5 D4 D3 D2 D1 D0
Sign bit
MSB
LSB
1= Negative
0 = Positive
64°C 32°C 16°C 8°C
4°C
2°C
1°C 0.5°C
X
X
X
X
X
X
X
X = Don’t care.
Table 4. Temperature Data Output Format
TEMPERATURE (°C)
+125
+25
+0.5
0
-0.5
-25
-55
X = Don’t care.
DIGITAL OUTPUT
BINARY
HEX
0111 1101 0XXX XXXX 7D0X
0001 1001 0XXX XXXX
190X
0000 0000 1XXX XXXX
008X
0000 0000 0XXX XXXX
000X
1111 1111 1XXX XXXX
FF8X
1110 0111 0XXX XXXX
E70X
1100 1001 0XXX XXXX C90X
0111 1101 0
0001 1001 0
0000 0000 1
0000 0000 0
1111 1111 1
1110 0111 0
1100 1001 0
-55
-25
-0.5 0 +0.5
+25
LOCAL
TEMPERATURE ( C)
+125
Figure 3. Temperature-to-Digital Transfer Function
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