TCN75AVUA Microchip Technology, TCN75AVUA Datasheet - Page 16
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TCN75AVUA
Manufacturer Part Number
TCN75AVUA
Description
IC TEMP SENSOR SRL 2.7V 8SMOP
Manufacturer
Microchip Technology
Specifications of TCN75AVUA
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Output Type
I²C™
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
2-Wire, I2C
Digital Output - Number Of Bits
9 bit to 12 bit
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 55 C
Supply Current
500 uA
Ic Output Type
Voltage
Sensing Accuracy Range
± 1°C
Temperature Sensing Range
-40°C To +125°C
Supply Voltage Range
2.7V To 5.5V
Resolution (bits)
12bit
Rohs Compliant
Yes
Sensor Case Style
MSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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TCN75A
5.3.1
The TCN75A has a 16-bit read-only Ambient
Temperature register that contains 9-bit to 12-bit
temperature data. (0.5°C to 0.0625°C resolutions,
respectively).
complement. The bit assignments, as well as the
corresponding resolution, is shown in the register
assignment below.
The refresh rate of this register depends on the
selected ADC resolution. It takes 30 ms (typical) for
9-bit data and 240 ms (typical) for 12-bit data. Since
this register is double-buffered, the user can read the
register while the TCN75A performs Analog-to-Digital
conversion in the background. The decimal code to
ambient
Equation
REGISTER 5-2:
DS21935D-page 16
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
Note 1:
Upper Half:
Lower Half:
2
-1
Sign
R-0
R-0
°C/bit
5-2:
temperature
When the 0.5°C, 0.25°C or 0.125°C resolutions are selected, bit 6, bit 7 or bit 8 will remain clear <0>,
respectively.
AMBIENT TEMPERATURE
REGISTER (T
This
2
2
R-0
R-0
-2
6
data is
AMBIENT TEMPERATURE REGISTER (T
°C
°C
conversion
A
)
W = Writable bit
‘1’ = Bit is set
formatted
2
2
R-0
R-0
-3
5
°C
°C
is
shown
in
2
two’s
2
R-0
R-0
-4
4
°C
°C
in
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
2
EQUATION 5-2:
R-0
R-0
3
Where:
0
°C
A
) — ADDRESS <
Code = TCN75A output in decimal
T
A
2
R-0
R-0
2
0
= Ambient Temperature (°C)
°C
T
A
=
2010 Microchip Technology Inc.
Code 2
x = Bit is unknown
0000 0000
2
R-0
R-0
1
0
°C
4 –
>b
2
R-0
R-0
0
0
°C
bit 8
bit 0