VS6502V015/T2 STMicroelectronics, VS6502V015/T2 Datasheet - Page 39

• Manufacturer Part Number: VS6502V015/T2
• Description: SENSOR COLOR VGA CMOS SMOP
• Manufacturer: STMicroelectronics
• Type: CMOS Imagingr

Specifications of VS6502V015/T2

• Pixel Size: 5.6µm x 5.6µm
• Active Pixel Array: 644H x 484V
• Frames Per Second: 30
• Voltage - Supply: 2.6 V ~ 3.6 V
• Package / Case: SMOP2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3884-1

VS6502
7.4.3
7.4.4
7.5
Couplet definition
A failing pixel at X with a failing pixel at position [0] or [1] or [2] or [3] or [4] or [5] or [6] or [7] such that
there is a maximum of 2 failing pixels from the group of 9 pixels illustrated in
as a couplet fail. The example shown on the right in
location and at position [7].
The basic couplet definition is further subdivided into minor and major couplets. With respect to the
example in
extreme fail, that is a “stuck at black” or “stuck at white”, but the second pixel in the pair must differ
from the local pixel average by less than 15% of that average value. If the second pixel in the
couplet differs by more than 15% of the local pixel average value then this would be defined as a
major couplet.
Note that the test program considers a couplet as 2 independent pixels. If the test identifies two
independent pixel fails (pixels that differ by more than 15% from pixel average of neighbors) that
form a couplet with 2 minor pixel fails within the inner area, the device fails the test and is rejected.
If however the test identifies 2 couplets where the pixels span the border between the inner and
outer areas and where only one of the pixels in the inner area is determined as a major fail and the
other a minor fail, then this device passes the test.
Cluster definition
We define a cluster fail as a failing pixel with at least two adjacent failing pixels. In the example from
Figure
A sensor containing a cluster is always rejected.
Summary pass criteria
a. Test program will allow maximum of one minor couplet in inner zone of pixel array.
b. No major couplet allowed.
Test program will allow maximum of two minor couplets in outer zone of pixel array.
Single pixel fails
29, there are additional pixel fails in positions [0] and [7]. This example constitutes a cluster.
Figure
<=120
[0]
[7]
[6]
28, a minor couplet is defined as a defect pixel pair where one pixel can be an
[1]
[5]
X
Figure 28: General couplet examples
Table 36: Sensor pixel defect pass criteria
[2]
[3]
[4]
Figure 29: Cluster example
Minor Couplet
1 (2)
[X]
[X]
[6]
[1]
[5]
X
a
[2]
[3]
[4]
Figure 28
Major Couplet
[0]
[6]
X
0
has failing pixels at the centre
[1]
[5]
X
b
[2]
[3]
[4]
Defect Categorisation
Figure 28
Clusters
0
is described
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