MCP9808
5.1.4
MANUFACTURER ID REGISTER
This register is used to identify the manufacturer of the
device in order to perform manufacturer-specific
operation. The Manufacturer ID for the MCP9808 is
0x0054 (hexadecimal).
REGISTER 5-5:
MANUFACTURER ID REGISTER – READ-ONLY (→ ADDRESS ‘0000 0110’b)
R-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
Manufacturer ID
bit 15
R-0
bit 8
bit 0
R-1
R-0
R-1
R-0
R-1
R-0
R-0
Manufacturer ID
bit 7
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
bit 15-0
Device Manufacturer Identification bits
1
0
2
0
3
1
4
1
5
6
7
8
1
0
2
0
3
0
4
0
5
0
6
1
7
1
8
0
Note:
It is not necessary to
select the Register
Pointer if it was set
from the previous
read/write.
SCL
SDA
A
C
K
A
C
K
A
2
A
1
A
0
S
W
Address Byte
Manufacturer ID Pointer
MCP9808
MCP9808
1
0
2
0
3
1
4
1
5
6
7
8
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
1
0
2
1
3
0
4
1
5
0
6
1
7
0
8
0
SCL
SDA
A
C
K
A
C
K
N
A
K
A
2
A
1
A
0
S
R
P
Address Byte
MSB Data
LSB Data
Master
Master
MCP9808
FIGURE 5-6:
Timing Diagram for Reading the Manufacturer ID Register (see Section 4.0 “Serial
Communication”).
© 2011 Microchip Technology Inc.
DS25095A-page 27
MICROCHIP [ MICROCHIP ]
