Microchip Technology MCP9800DM-DL2 Data Sheet
2010 Microchip Technology Inc.
DS21909D-page 23
MCP9800/1/2/3
FIGURE 5-6:
Timing Diagram for Writing and Reading from the Temperature Limit-set Register
(See
SDA
A
C
K
1
0
0
1
A
T
SET
Pointer
0
0
0
0
A
C
K
S
2
A
1
1
A
0
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
SCL
0
Address Byte
A
C
K
1
0
0
1
A
MSB Data
A
C
K
N
A
K
S
P
2
A
1
1
A
0
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Address Byte
LSB Data
R
PIC18FXXX
PIC18FXXX
PIC18FXXX
Master
Master
W
SDA
SCL
0
1
1
0
1
0
1
1
0
1
0
0
0
0
0
0
0
0
0
• Reading the T
SET
Register.
• Writing to the T
SET
Register to set the temperature limit to 90°C,
<
0101 1010 0000 0000
>b
SDA
A
C
K
1
0
0
1
A
0
0
0
0
A
C
K
S
2
A
1
1
A
0
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
SCL
0
Address Byte
W
PIC18FXXX
PIC18FXXX
MSB Data
A
C
K
A
C
K
P
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
LSB Data
T
SET
Pointer
PIC18FXXX
PIC18FXX
0
1
1
0
1
0
1
1
0
1
0
0
0
0
0
0
0
0
0
Note:
It is not necessary to
select the Register
Pointer if it was set
from the previous read/
write.
(see Section
select the Register
Pointer if it was set
from the previous read/
write.
(see Section