MCP9804 Microchip Technology, MCP9804 Datasheet - Page 29

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

5.1.6
This register allows the user to change the sensor
resolution (see Section 5.2.4). The POR default
resolution is 0.25°C. The selected resolution is also
reflected in the Capability register (see
REGISTER 5-7:
FIGURE 5-9:
Section 4.0).
© 2009 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-3
bit 2-0
SDA
SCL
U-0
—
RESOLUTION REGISTER
S
Unimplemented: Read as ‘0’
Resolution:
00 = LSB = 0.5°C (t
01 = LSB = 0.25°C (t
10 = LSB = 0.125°C (t
11 = LSB = 0.0625°C (power up default, t
1
0
U-0
—
2
0
RESOLUTION → ADDRESS
Timing Diagram for Changing T
Address Byte
3
1
4
1
W = Writable bit
‘1’ = Bit is set
5
A
2
A
6
1
U-0
—
CONV
CONV
7
A
0
Register
CONV
MCP9804
W
8
= 30 ms typical)
= 65 ms typical)
A
C
K
= 130 ms typical)
5-2).
1
0
Resolution Pointer
U-0
—
2
0
3
0
‘0000 1000’b
4
A
0
CONV
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
Resolution to 0.0625°C <0000 0011>b (See
5
1
U-0
—
= 250 ms typical)
6
0
7
0
MCP9804
8
0
A
C
K
1
0
U-0
—
2
0
3
0
Data
4
0
x = Bit is unknown
5
0
R/W-1
MCP9804
6
0
www.DataSheet4U.com
7
Resolution
1
MCP9804
DS22203A-page 29
8
1
A
C
K
R/W-1
P
bit 0