MCP9808 MICROCHIP [Microchip Technology], MCP9808 Datasheet - Page 28

• Manufacturer Part Number: MCP9808
• Manufacturer: MICROCHIP [Microchip Technology]

MCP9808
5.1.5
The upper byte of this register is used to specify the
device identification and the lower byte is used to
specify the device revision. The Device ID for the
MCP9808 is 0x04 (hex).
The revision begins with 0x00 (hex) for the first release,
with the number being incremented as revised versions
are released.
REGISTER 5-6:
FIGURE 5-7:
Section 4.0 “Serial
DS25095A-page 28
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-8
bit 7-0
SCL
SDA
SCL
SDA
R-0
R-0
DEVICE ID AND REVISION
REGISTER
S
S
Device ID: Bit 15 to bit 8 are used for device ID
Device Revision: Bit 7 to bit 0 are used for device revision
1
0
1
0
R-0
R-0
2
0
2
0
DEVICE ID AND DEVICE REVISION – READ-ONLY (→ ADDRESS ‘0000 0111’b)
Timing Diagram for Reading Device ID and Device Revision Register (see
Communication”).
Address Byte
Address Byte
1
3
3
1
4
1
4
1
W = Writable bit
‘1’ = Bit is set
5
A
A
2
5
2
A
6
1
6
A
1
R-0
R-0
7
A
0
A
7
0
MCP9808
MCP9808
W
8
8
R
A
C
K
A
C
K
1
0
1
0
R-0
R-0
Device Revision
Device ID Pointer
2
0
2
0
Device ID
3
0
3
0
MSB Data
4
4
0
0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
5
0
0
5
6
R-0
R-0
1
6
1
7
7
0
1
MCP9808
8
1
8
0
Master
A
C
K
A
C
K
1
0
R-1
R-0
2
0
Note:
3
0
LSB Data
4
© 2011 Microchip Technology Inc.
0
x = Bit is unknown
5
0
It is not necessary to
select the Register
Pointer if it was set
from
read/write.
6
0
R-0
R-0
7
0
the
8
0
Master
N
A
K
previous
P
R-0
R-0
bit 8
bit 0