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LR38637 Schematic ( PDF Datasheet ) - Sharp Electrionic

Teilenummer LR38637
Beschreibung Digital Signal Processor
Hersteller Sharp Electrionic
Logo Sharp Electrionic Logo 




Gesamt 15 Seiten
LR38637 Datasheet, Funktion
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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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LR38637 Datasheet, Funktion
LR38637
PIN NO. SYMBOL
74 NC
75 NC
76 UV5
77 UV6
78 UV7
79 DGND
80 CKO
81 CKI
82 EXTCLK
83 DVDD2
84 RCLK
85 HREF
86 DVDD
87 VS
88 RCLK2
89 DGND
90 TEST1Z
91 TEST2Z
92 TEST3Z
93 TEST4Z
94 MODE1
95 DVDD2
96 NC
97 NC
98 NC
99 NC
100 NC
IO SYMBOL
DESCRIPTION
– Must be open.
– Must be open.
IO4 Digital video output. (NOTE 8)
IO4 Digital video output. (NOTE 8)
IO4 Digital video output. (NOTE 8)
– Ground
OSC System clock oscillator output
IA System clock oscillator input
IAC Connect to High level (+3.0 V) .
– I/O power supply (+3.0 V)
O4 Clock output synchronized with digital video output
O4 Horizontal blank pulse of digital video output
– Internal power supply (+2.5 V)
O4 Vertical blank pulse of digital video output
O4 Separated video output
– Ground
IU Test input (Must be open.) (NOTE 3)
IU Test input (Must be open.) (NOTE 3)
IU Test input (Must be open.) (NOTE 3)
IU Test input (Must be open.) (NOTE 3)
I Connect to Low level (+0.0 V).
– I/O power supply (+3.0 V)
– Must be open.
– Must be open.
– Must be open.
– Must be open.
– Must be open.
I : Input pin
IL : Input pin
IS : Schmidt input pin
IU : Input pin with pull-up resistor
O4 : Output pin
O12 : Output pin
IO4 : Input/output pin
IOL4 : Schmidt input/output pin (Nch open drain)
IA : Input pin for oscillation
OSC : Output pin for oscillation
IAC : Input pin for external clock
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LR38637 pdf, datenblatt
DIGITAL PARALLEL OUTPUT TIMING
RCLK
VS
HREF
RCLK2
Y7-Y0
UV7-UV0
TVSD
THREFD
TRCLK2D
TYD
TUVD
Fig. 4 Digital Parallel Output Timing
(DVDD2 = 3.0 V, DVDD = 2.5 V, TA = –20 to +70˚C)
PARAMETER
CONDITIONS
SYMBOL
UNIT NOTE
MIN. MAX.
VS output delay
TVSD –15 +15 ns
1
HREF output delay
THREFD –15 +15 ns
1
RCLK2 output delay
TRCLK2D –15 +15 ns
1
Y7 to Y0 output delay
TYD –15 +15 ns
1
UV7 to UV0 output delay
TUVS –15 +15 ns
1
NOTE :
1. Output load capacitance CL = 15 pF
LR38637
12

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