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AS6221T Datasheet(PDF) 21 Page - OSRAM GmbH

Part # AS6221T
Description  Digital temperature sensor
PDF  36 Pages
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Manufacturer  OSRAM [OSRAM GmbH]
Direct Link  http://www.osram.com
Logo OSRAM - OSRAM GmbH

AS6221T Datasheet(HTML) 21 Page - OSRAM GmbH

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AS6221T
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• PUBLIC • Document Feedback
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• v3-00 • 2023-Oct-13
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6.2.10
Temperature register (Address 0x0)
Table 19: TEMPERATURE value register
Addr: 0x0
Bit
Bit name
0
T0
1
T1
2
T2
3
T3
4
T4
5
T5
6
T6
7
T7
8
T8
9
T9
10
T10
11
T11
12
T12
13
T13
14
T14
15
T15
The temperature register contains the digitally converted temperature value and can be read
by setting the index pointer to the TVAL register (0x0).
Two consecutive bytes must be read to obtain the complete temperature value. The MSB byte
(Bits 15 to 8) is transmitted upon the first read access and the LSB byte (Bits 7 to 0) is
transmitted after the second read access.
A temperature value is represented as a two complement value in order to cover also negative
values. After power-up, the temperature value is read as 0 °C until the first conversion has
been completed. One LSB corresponds to 0.0078125 °C (=1/128 °C).
The binary values can be calculated according to the following formulas:
Positive values:
|Value| / LSB
Negative values:
Complement (|Value| / LSB ) + 1



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