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PDF LR38637 Data sheet ( Hoja de datos )
| Número de pieza | LR38637 | |
| Descripción | Digital Signal Processor | |
| Fabricantes | Sharp Electrionic | |
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LR38637
LR38637
DESCRIPTION
The LR38637 is a CMOS digital signal processor
for color digital video camera systems of 110 k-
pixel (CIF)/350 k-pixel (VGA) CMOS image sensors
with primary color mosaic filters.
Digital Signal Processor For VGA/CIF
CMOS Image Sensors
FEATURES
• Supported CMOS image sensors
– Image size : 110 k pixels (CIF)/350 k pixels
(VGA)
– R, G and B primary color mosaic filters :
Bayer matrix, 10 bits per color
• Built-in synchronous signal generation circuit for
CMOS image sensors
• Built-in parallel digital output function
– 16-bit outputs : YUV, RGB format
– 8-bit outputs : UYVY format
• Output image sizes for VGA CMOS image sensors :
VGA, QVGA, QQVGA, CIF, QCIF, QQCIF
• Output image sizes for CIF CMOS image sensors :
QVGA, QQVGA, CIF, QCIF, QQCIF
• Used for video cameras by combining with
CMOS image sensor
• Parameters required for image signal processing
can be changed
• Built-in auto exposure control
• Built-in auto carrier balance control
• Built-in auto white balance control
• Built-in drive circuit for 2k-bit EEPROM
• Built-in auto white detect correction
• Built-in shading correction control
• Power supplies
– +2.5 V±10% for internal digital circuits
– +2.7 to +3.6 V for digital circuits
• Package :
100-pin LQFP (P-LQFP100-1414) 0.5 mm pin-pitch
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in
catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
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1 page  
LR38637
PIN NO. SYMBOL
36 DVDD
37 AD4
38 AD5
39 AD6
40 AD7
41 AD8
42 AD9
43 DVDD2
44 DVDD
45 DGND
46 NC
47 NC
48 NC
49 NC
50 NC
51 DGND
52 ACL
53 LP
54 ADJ
55 IOCTRL
56 Y0
57 Y1
58 Y2
59 Y3
60 Y4
61 Y5
62 Y6
63 DVDD
64 Y7
65 DGND
66 UV0
67 UV1
68 UV2
69 UV3
70 UV4
71 NC
72 NC
73 NC
IO SYMBOL
DESCRIPTION
– Internal power supply (+2.5 V)
I Digital input bit 4
I Digital input bit 5
I Digital input bit 6
I Digital input bit 7
I Digital input bit 8
I Digital input bit 9
– I/O power supply (+3.0 V)
– Internal power supply (+2.5 V)
– Ground
– Must be open.
– Must be open.
– Must be open.
– Must be open.
– Must be open.
– Ground
IS Reset input (low active)
Lower power mode control
Low level input : The LR38637 and CMOS image sensor are in normal mode.
I
High level input : The LR38637 and CMOS image sensor are in low power
mode.
I Connect to Low level (+0.0 V)
I Switch input/output of parallel video output. (NOTE 7)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
– Internal power supply (+2.5 V)
IO4 Digital video output (NOTE 8)
– Ground
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
IO4 Digital video output (NOTE 8)
– Must be open.
– Must be open.
– Must be open.
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5 Page 
AC Characteristics
CMOS IMAGE SENSOR INTERFACE TIMING
CKI
CVD
CHD
SCKO
SDI
SCLK
SLOAD
AD9-AD0
TCVDD
TCHDD
TCKOD
TSDID
TSCLKD
TSLOADD
TADS
TADH
Fig. 3 CMOS Image Sensor Interface Timing
(DVDD2 = 3.0 V, DVDD = 2.5 V, TA = –20 to +70˚C)
PARAMETER
CONDITIONS
SYMBOL
UNIT NOTE
MIN. MAX.
CVD output delay
TCVDD
15 ns
1
CHD output delay
TCHDD
15 ns
1
SCKO output delay
TSCKOD
15 ns
1
SDI output delay
TSDID
15 ns
1
SCLK output delay
TSCLKD
15 ns
1
SLOAD output delay
TSLOADD
15 ns
1
Setup time of AD9-AD0 input data
TADS
10
ns 1
Hold time of AD9-AD0 input data
TADH
10
ns 1
NOTE :
1. Output load capacitance CL = 15 pF
11
LR38637
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet LR38637.PDF ] | |
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