FM75 Fairchild Semiconductor, FM75 Datasheet - Page 13

• Manufacturer Part Number: FM75
• Description: Low Voltage 2-Wire Digital Temperature Sensor with Thermal Alarm
• Manufacturer: Fairchild Semiconductor

PRODUCT SPECIFICATION
REV. 1.0.4 10/3/02
SDA
SDA
SCL
SCL
SDA
SCL
S
S
S
1
Figure 11. Pointer Set Followed by Immediate Write to A 2-byte Register (T
1
1
0
0
. . . .
. . . .
0
Figure 13. Pointer Set Followed by Immediate Write to the Configuration Register
0
Figure 12. Pointer Set Followed by Immediate Read from Configuration Register
0
Address Byte
Address Byte
0
1
1
Address Byte
. . . .
. . . .
A2
A2
1
A
A1
A1
A2
D7
A0
A0
A1
Most Significant Data Byte
D6
1
R/W
R/W
once in the actual sequence)
A0
FM75
D5
from
FM75
0
Ack
from
clarity, transmitted only
Ack
(from Master)
A
A
R/W
(repeated here for
0
D4
Address Byte
0
0
FM75
from
Ack
1
A
0
D3
0
A2
0
Pointer Byte
0
D2
0
Pointer Byte
A1
0
0
D1
0
A0
0
0
0
D0
R/W
Pointer Byte
0
FM75
0
from
0
Ack
FM75
A
from
P1 P0
Ack
A
P1
0
D7
X
P0
FM75
from
Ack
Least Significant Data Byte
D6
A
0
D6
FM75
from
Ack
A
P1
D5
X
Repeat Start
D5
(from Master)
(from FM75)
Master
from
Data Byte
S
D6 D5 D4
D4
P0
D4
OS
1
(from Master)
D3
FM75
from
Ack
Data Byte
or T
A
0
0
D2
. . . .
. . . .
HYST
D3
0
0
Address Byte
D1
Register)
D2
1
0
D0
A2
D1 D0
No Ack
Master
0
from
N
A1
FM75
from
Ack
P
A
FM75
from
Ack
A0
A
P
P
R/W
FM75
13