TCN75AVUA Microchip Technology, TCN75AVUA Datasheet - Page 16

• 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

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