MCP9804 Microchip Technology, MCP9804 Datasheet - Page 27

• Manufacturer Part Number: MCP9804
• Description: Accuracy Digital Temperature Sensor
• Manufacturer: Microchip Technology

5.1.4
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).
REGISTER 5-5:
FIGURE 5-7:
© 2009 Microchip Technology Inc.
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-0
.
SDA
SCL
R-0
R-0
SDA
SCL
MANUFACTURER ID REGISTER
S
Device Manufacturer Identification Bits
1
0
S
2
0
1
0
R-0
R-1
Address Byte
MANUFACTURER ID REGISTER (READ-ONLY) → ADDRESS
Timing Diagram for Reading the Manufacturer ID Register (See Section 4.0).
1
3
2
0
Address Byte
4
1
1
3
5
A
2
4
1
W = Writable bit
‘1’ = Bit is set
A
6
1
5
A
2
R-0
R-0
7
A
0
A
6
1
MCP9804
W
8
7
A
0
MCP9804
A
C
K
R
8
1
0
A
C
K
2
0
Manuf. ID Pointer
1
0
R-0
R-1
Manufacturer ID
Manufacturer ID
3
0
2
0
4
0
3
0
MSB Data
5
0
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
4
0
6
1
5
0
R-0
R-0
7
1
0
6
MCP9804
8
0
7
0
A
C
K
8
0
Master
A
C
K
R-0
R-1
1
0
Note:
2
1
3
0
LSB Data
4
1
x = Bit is unknown
It is not necessary to
select
pointer if it was set from
the previous read/write.
5
0
MCP9804
R-0
R-0
‘0000 0110’b
www.DataSheet4U.com
6
1
7
0
DS22203A-page 27
the
8
0
Master
N
A
K
register
P
R-0
R-0
bit 8
bit 0