MCP9801-M/MSG Microchip Technology, MCP9801-M/MSG Datasheet - Page 23
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MCP9801-M/MSG
Manufacturer Part Number
MCP9801-M/MSG
Description
IC SENSOR THERMAL 2.7V 8MSOP
Manufacturer
Microchip Technology
Datasheets
1.MCP9800A0T-MOT.pdf
(42 pages)
2.MCP9800A0T-MOT.pdf
(4 pages)
3.MCP9801-MSN.pdf
(30 pages)
Specifications of MCP9801-M/MSG
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,
Temperature Threshold
Programmable
Full Temp Accuracy
3 C
Digital Output - Bus Interface
I2C, SMBus
Digital Output - Number Of Bits
9 bit to 12 bit
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Description/function
Lead Free Package Analog
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 55 C
Supply Current
400 uA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FIGURE 5-6:
(See
2010 Microchip Technology Inc.
SDA
SCL
• Writing to the T
• Reading the T
Section 5.3.4 “Temperature Limit-Set Register (T
SDA
SCL
SDA
SCL
S
1
1
S
2
0
S
1
1
SET
SET
Address Byte
Timing Diagram for Writing and Reading from the Temperature Limit-set Register
3
0
1
1
2
0
Register to set the temperature limit to 90°C,
Register.
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
0
MSB Data
A
C
K
2
0
A
C
K
4
1
1
0
T
3
0
1
0
1
5
SET
2
1
4
0
2
0
6
0
3
0
Pointer
MSB Data
T
5
0
3
0
SET
7
1
4
1
PIC18FXXX
6
0
4
0
8
0
SET
1
5
Pointer
7
1
5
0
A
C
K
6
0
)”).
PIC18FXXX
8
1
6
0
1
0
7
1
<
A
C
K
0101 1010 0000 0000
7
1
2
0
8
0
Master
PIC18FXXX
1
8
3
0
A
C
K
LSB Data
MCP9800/1/2/3
A
C
K
4
0
1
0
Note:
5
0
2
0
6
0
3
0
LSB Data
7
0
4
0
It is not necessary to
select
Pointer if it was set
from the previous read/
write.
(see Section 4.1.1)
PIC18FXX
8
0
5
0
A
C
K
6
0
>b
P
DS21909D-page 23
the
7
0
8
0
Master
Register
N
A
K
P