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AS7261 데이터시트(PDF) 21 Page - OSRAM GmbH

부품명 AS7261
상세설명  XYZ Chromatic White Color Sensor NIR with Electronic Shutter and Smart Interface
PDF  48 Pages
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제조업체  OSRAM [OSRAM GmbH]
홈페이지  http://www.osram.com
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AS7261 데이터시트(HTML) 21 Page - OSRAM GmbH

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Page 20
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[v1-00] 2016-Dec-30
AS7261 − Detailed Descriptions
4-Btye Floating-Point (FP) Registers
Several 4 byte registers (hex) are used by the AS7261. Here is
an example of how these registers are used to represent floating
point data (based on the IEEE 754 standard):
Figure 20:
Example of the IEEE 754 Standard
The floating point (FP) value assumed by 32 bit binary32 data
with a biased exponent e (the 8 bit unsigned integer) and a
23 bit fraction is (for the above example):
(EQ1)
FPvalue
1
–
()
sign 1
b23 i
– 2
i
–
i
1
=
23
+




2 e 127
–
()
×
=
(EQ2)
FPvalue
1
–
()
0 1
b23 i
– 2
i
–
i
1
=
23
+




2 124 127
–
()
×
=
(EQ3)
FPvalue
11 2
2
–
+
() 2 3
–
()
×
×
0.15625
==



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