MCM20027IBMN Freescale, MCM20027IBMN Datasheet - Page 25
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MCM20027IBMN
Manufacturer Part Number
MCM20027IBMN
Description
Manufacturer
Freescale
Type
CMOSr
Datasheet
1.MCM20027IBMN.pdf
(73 pages)
Specifications of MCM20027IBMN
Sensor Image Color Type
Monochrome
Sensor Image Size Range
>= 480,000Pixels
Sensor Image Size
1280x1024Pixels
Operating Supply Voltage (min)
3V
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.6V
Operating Temp Range
0C to 40C
Package Type
CLCC
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
48
Lead Free Status / RoHS Status
Supplier Unconfirmed
Revision 8.4 - 24 Oct 2002:
To ensure that Strobe signal fires, the integration time
must be large enough to ensure that all rows are inte-
grating simulanteously for at least 2 Row periods (T
(see
page
where T
To accomplish this - ensure that the Integration time
(cint
the active Window of Interest Row depth.
Min. Integration time =T
where wrd
T
T
EXAMPLE: Below you will find an example of how to
ensure that the strobe signal will fire and to determine
the length of the STROBE signal in default mode:
(Refer to
Goal (For example purpose):
Strobe Signal that lasts for at least 250us, which is the
length of a typical strobe/flash event.
Assumptions:
1) Active Window of Interest = 1280 x 1024
2) Virtual Column Width (vcw
3) Virtual Row Depth (vrd
4) Sample & hold time (shs
5) Sample & hold time (shr
6) MCLK = 13 Mhz
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
ie. (wcw
strobe1
strobe2
(wrd
d
“Frame Rate and Integration Time Control” on
13)
) greater than 2 Row periods (T
= T
= T
row
d
d
Figure 16, on page 24
)=1023
)=1279
d
row
intmin
= (vcw
is the Window Of Interest Row depth.
cint
- (wrd
min
d
+ shs
=wrd
MCM20027
d
d
+1)*T
) = 1034
d
d
intmin
) = 10
) = 10
d
d
d
+x
)= 1290
+ shr
row
=
Freescale Semiconductor, Inc.
(cint
for timing analysis)
where x > 2
d
For More Information On This Product,
+ 19)
min
row
+1)*T
) larger than
Go to: www.freescale.com
row
row
)
Variables:
Integration Time (cint
the time of the Strobe signals.
T
Calculations:
Row Time =Trow = (vcwd + shsd + shrd + 19)
T
Let
Therefore,
T
T
T
Results:
NOTE!! Refer to
analysis
cint
intmin
intmin
intmin
strobe1
strobe2
cint
min
T
T
Signal
T
strobe1
strobe2
T
=
=
= 101.39
=wrd
T
frame
min
= 3 * T
= 295us
= 98.44 s
= T
(cint
(cint
row
int
= 1023 + 4 = 1029
= wrd
intmin
min
min
d
+x
row
+1)*T
+1)*T
= (1290 + 10 + 10 + 19) / 13.5e6
= 98.44 s
d
- (wrd
+x
Figure 16, on page 24
where x > 2
min
row
row
) is the main variable used to control
d
where x > 2
101ms
202ms
Value
295us
+2)*T
98us
98us
row
ImageMOS
ImageMOS
where x=4
for timing
MOTOROLA
25