Microchip Technology TMPSNSRD-TCPL1 データシート
© 2009-2012 Microchip Technology Inc.
DS22203C-page 27
MCP9804
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 MCP9804 is
0x0054 (hexadecimal).
device in order to perform manufacturer-specific
operation. The Manufacturer ID for the MCP9804 is
0x0054 (hexadecimal).
FIGURE 5-6:
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
bit 8
R-0
R-1
R-0
R-1
R-0
R-1
R-0
R-0
Manufacturer ID
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-0
Device Manufacturer Identification bits
SDA
A
C
K
0
0
1
1
A
Manufacturer ID Pointer
0
0
0
0
A
C
K
S
2
A
1
A
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
SCL
0
Address Byte
A
C
K
0
0
1
1
A
MSB Data
A
C
K
N
A
K
S
P
2
A
1
A
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
MCP9804
MCP9804
MCP9804
Master
Master
W
SDA
SCL
1
1
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
0
Note:
It is not necessary to
select the Register
Pointer if it was set
from the previous
read/write.
select the Register
Pointer if it was set
from the previous
read/write.