MCP9800A0T-M/OT Microchip Technology, MCP9800A0T-M/OT Datasheet - Page 20

• Manufacturer Part Number: MCP9800A0T-M/OT
• Description: IC SENSOR THERMAL 2.7V SOT235
• Manufacturer: Microchip Technology

Specifications of MCP9800A0T-M/OT

• Package / Case: SOT-23-5, SC-74A, SOT-25
• Output Type: I²C™/SMBus™
• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• 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: High Accuracy 12-bit Serial Input/Output, Thermal Monitors
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Supply Current: 400 uA
• Ic Output Type: Voltage
• Sensing Accuracy Range: ± 0.5°C
• Temperature Sensing Range: -55°C To +125°C
• Supply Voltage Range: 2.7V To 5.5V
• Resolution (bits): 12bit
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP9800DM-TS1 - DEMO BOARD TEMP SENSOR MCP9800
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MCP9800A0T-M/OTTR

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