MCP9803-M/MS Microchip Technology, MCP9803-M/MS Datasheet - Page 19

• Manufacturer Part Number: MCP9803-M/MS
• Description: High-Accuracy, 12-bit Thermal Sensor With Serial Interface And Bus Timeout 8 MSO
• Manufacturer: Microchip Technology

Specifications of MCP9803-M/MS

• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Full Temp Accuracy: +/- 0.5 C
• Digital Output - Bus Interface: Serial (2-Wire, I2C)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 5-4:
Section 5.3.2 “Sensor Configuration Register
 2010 Microchip Technology Inc.
SDA
SCL
• Writing to the CONFIG Register to change the resolution to 0.0625°C <0110 0000>b.
• Reading the CONFIG Register.
SDA
SCL
SDA
SCL
S
1
1
S
2
0
S
1
1
Address Byte
Timing Diagram for Writing and Reading from the Configuration Register (See
3
0
1
1
2
0
4
Address Byte
1
2
0
3
0
Address Byte
5
A
2
3
0
4
1
A
6
1
4
1
A
5
2
7
A
0
A
5
2
6
A
1
PIC18FXXX
W
8
6
A
1
0
1
A
7
0
PIC18FXXX
A
C
K
A
7
0
1
2
8
R
PIC18FXXX
W
1
0
8
3
1
MSB Data
A
C
K
2
0
A
C
K
CONFIG Pointer
4
0
1
0
3
0
1
0
0
5
2
1
(CONFIG)”).
4
0
2
0
CONFIG Pointer
6
0
3
1
5
0
3
0
7
0
Data
4
0
PIC18FXXX
6
0
4
0
8
0
0
5
7
0
5
0
A
C
K
6
0
PIC18FXXX
8
1
6
0
1
P
7
0
A
C
K
7
0
8
0
PIC18FXXX
1
8
N
A
K
MCP9800/1/2/3
A
C
K
P
Note:
It is not necessary to
select
Pointer if it was set
from the previous read/
write
(see Section 4.1.1).
DS21909D-page 19
the
Register