MCP9803-M/MS Microchip Technology, MCP9803-M/MS Datasheet - Page 20

• 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

MCP9800/1/2/3
5.3.3
The
Temperature Hysteresis register that contains a 9-bit
data in two’s compliment format. This register is used
to set a hysteresis for the T
represents a minimum temperature limit. If the ambient
temperature drifts below the specified limit, the
MCP9800/1/2/3 asserts an alert output (refer to
Section 5.3.4.3 “ALERT Output
This register uses the nine Most Significant bits (MSbs)
and all other bits are “don’t cares”.
The power-up default value of T
or <0100 1011 0>b in binary.
REGISTER 5-4:
DS21909D-page 20
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
Upper Half:
Lower Half:
R/W-0
R/W-0
2
Sign
-1
MCP9800/1/2/3
°C
TEMPERATURE HYSTERESIS
REGISTER (T
R/W-1
2
R-0
6
0
TEMPERATURE HYSTERESIS REGISTER (T
°C
has
SET
HYST
limit. Therefore, the data
W = Writable bit
‘1’ = Bit is set
a
HYST
)
Configuration”).
R/W-0
2
16-bit
R-0
5
0
°C
register is 75°C,
read/write
R/W-0
2
R-0
4
0
°C
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
2
R-0
3
0
°C
HYST
R/W-0
2
R-0
2
) – ADDRESS <
0
°C
 2010 Microchip Technology Inc.
x = Bit is unknown
R/W-1
2
R-0
1
0
°C
0000 0010
R/W-1
2
R-0
0
0
>b
°C
bit 8
bit 0