TCN75A_1 Datasheet, PDF (21/40 Pages) Microchip Technology – 2-Wire Serial Temperature Sensor

TCN75A
• Writing to the T_HYST Register to set the temperature hysteresis to 95°C <0101 1111 0000 0000>b.
1 2 34 56 78
12345678
SCL
SDA
S
1
0
0
1
A
2
A
1
A
0
W
A
C
K
0
0
0
0
0
0
1
0
A
C
K
Address Byte
TCN75A
T_HYST Pointer
TCN75A
12345678
12345678
0
1
0
11
1
11
A
C
K
0
0
0
00
0
A
0
0
C
K
P
MSB Data
TCN75A
LSB Data
TCN75A
• Reading the T_HYST Register.
SCL
1 2 34 5678
1 23 4 567 8
SDA
S1
0
0
1
A
2
A
1
A
0
W
A
C
K
0
0
0
0
0
0
1
0
A
C
K
Address Byte
TCN75A
T_HYST Pointer
TCN75A
Note:
It is not necessary to
select the Register
Pointer if it was set
from the previous read/
write
(see Section 4.1.1).
SCL
1 2 34 5678
12345678
12345678
SDA
S1
0
0
1
A
2
A
1
A
0
A
R
C
K
0
1
0
1
1
1
1
1
A
C
K
0
0
0
0
0
0
0
N
0
A
K
P
Address Byte
TCN75A
MSB Data
Master
LSB Data
Master
FIGURE 5-5:
Timing Diagram for Writing and Reading from the Temperature Hysteresis Register
(See Section 4.0 “Serial Communication”).
 2010 Microchip Technology Inc.
DS21935D-page 21