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PDF OV7640 Data sheet ( Hoja de datos )
| Número de pieza | OV7640 | |
| Descripción | (OV7141 / OV7640) B/w Vga 640 X 480 Digital CMOS Camerachipstm | |
| Fabricantes | OmniVision Technologies | |
| Logotipo |  |
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Omni
ision
TM
Advanced Information
Preliminary Datasheet
OV7640 Color CMOS VGA (640 x 480) CAMERACHIPTM
OV7141 B&W CMOS VGA (640 x 480) CAMERACHIPTM
General Description
The OV7640 (color) and OV7141 (black and white)
CAMERACHIPSTM are low voltage CMOS image sensors
that provide the full functionality of a single-chip VGA
(640 x 480) camera and image processor in a small
footprint package. The OV7640/OV7141 provides
full-frame, sub-sampled or windowed 8-bit images in a
wide range of formats, controlled through OmniVision’s
Serial Camera Control Bus (SCCB) interface.
This product family has an image array capable of
operating at up to 30 frames per second (fps) with
complete user control over image quality, formatting and
output data transfer. All required image processing
functions, including exposure control, gamma, white
balance, color saturation, hue control and more, are also
programmable through the SCCB interface. In addition,
OmniVision CAMERACHIPs use proprietary sensor
technology to improve image quality by reducing or
eliminating common lighting/electrical sources of image
contamination such as fixed pattern noise, smearing,
blooming, etc. to produce a clean, fully stable color image.
Features
• High sensitivity for low-light operation
• 2.5V operating voltage for embedded portable
applications
• Standard Serial Camera Control Bus (SCCB)
interface
• VGA, QVGA (sub-sampled) and Windowed outputs
with Raw RGB, RGB (GRB 4:2:2), YUV (4:2:2) and
YCbCr (4:2:2) formats
• Automatic image control functions including:
Automatic Exposure Control (AEC), Automatic Gain
Control (AGC), Automatic White Balance (AWB),
Automatic Brightness Control (ABC), Automatic
Band Filter (ABF) for 60Hz noise and Automatic
Black-Level Calibration (ABLC)
• Image quality controls including color saturation,
hue, gamma, sharpness (edge enhancement),
anti-blooming and zero smearing
Ordering Information
Product
OV7640 (Color)
OV7141 (B&W)
Package
PLCC-28
PLCC-28
Applications
• Cellular and Picture Phones
• Toys
• PC Multimedia
Key Specifications
Power Supply
Power
Requirements
Temperature
Range
Array Size
Core
Analog
I/O
Active
Standby
Operation
Stable Image
Output Formats (8-bit)
Lens Size
Maximum Image
VGA
Transfer Rate
QVGA
Sensitivity
B&W
Color
S/N Ratio
Dynamic Range
Scan Mode
Maximum Exposure Interval
Gamma Correction
Pixel Size
Dark Current
Well Capacity
Fixed Pattern Noise
Image Area
Package Dimensions
640 x 480 (VGA)
2.5VDC + 10%
2.5VDC + 4%
2.25V to 3.3V
40 mW (30 fps, including
I/O power)
30 µW
-10°C to 70°C
0°C to 50°C
• YUV/YCbCr 4:2:2
• RGB 4:2:2
• Raw RGB Data
1/4"
30 fps
60 fps
3.0 V/Lux-sec
1.12 V/Lux-sec
46 dB
62 dB
Progressive/Interlaced
523 x tROW
0.45
5.6 µm x 5.6 µm
30 mV/s
60 Ke
< 0.03% of VPEAK-TO-PEAK
3.6 mm x 2.7 mm
11.43 mm x 11.43 mm
Figure 1 OV7640/OV7141 Pin Diagram
4 3 2 1 28 27 26
PWDN
5
NC 6
VREF
7
VDD_C
8
VSYNC
9
HREF 10
PCLK 11
OV7640/OV7141
25 Y0
24 Y1
23 Y2
22 Y3
21 Y4
20 Y5
19 Y6
12 13 14 15 16 17 18
Version 1.4, March 6, 2003
Proprietary to OmniVision Technologies
1
1 page  
Omni ision
Electrical Characteristics
Electrical Characteristics
Table 2
Absolute Maximum Ratings
Ambient Storage Temperature
Supply Voltages (with respect to Ground)
All Input/Output Voltages (with respect to Ground)
VDD-A
VDD-C
VDD-IO
Lead Temperature, Surface-mount process
ESD Rating, Human Body model
-40ºC to +125ºC
3V
3V
4V
-0.3V to VDD_IO+1V
+230ºC
2000V
NOTE: Exceeding the Absolute Maximum ratings shown above invalidates all AC and DC electrical specifications and may
result in permanent device damage.
Table 3
DC Characteristics (0°C < TA < 70°C)
Symbol
Parameter
Condition Min Typ Max
VDD-A
DC supply voltage – Analog
—
2.40 2.5 2.60
VDD-C
DC supply voltage – Core
—
2.25 2.5 2.75
VDD-IO
IDDA
DC supply voltage – I/O
Active (Operating) Current
—
See Note a
2.25
—
15
3.3
IDDS-SCCB
IDDS-PWDN
Standby Current
Standby Current
See Note b
1
10
VIH Input voltage HIGH
CMOS
0.7 x VDD-IO
VIL Input voltage LOW
0.3 x VDD-IO
VOH Output voltage HIGH
CMOS
(IOH / IOL)
0.9 x VDD-IO
VOL Output voltage LOW
IOH Output current HIGH
See Note c
8
0.1 x VDD-IO
IOL Output current LOW
15
IL
Input/Output Leakage
GND to VDD-IO
±1
a. VDD-A = VDD-C = 2.5V, VDD-IO = 3.0V
IDDA = ∑{IDD-IO+ IDD-C + IDD-A}, fCLK = 24MHz at 30 fps, no I/O loading
b. VDD-A = VDD-C = 2.5V, VDD-IO = 3.0V
IDDS:SCCB refers to a SCCB-initiated Standby, while IDDS:PWDN refers to a PWDN pin-initiated Standby
c. Standard Output Loading = 25pF, 1.2KΩ to 3V
Unit
V
V
V
mA
mA
µA
V
V
V
V
mA
mA
µA
Version 1.4, March 6, 2003
Proprietary to OmniVision Technologies
5
5 Page 
Omni ision
Table 5
SCCB Register List
Address Register Default
(Hex)
Name
(Hex)
R/W
Description
Data Format and Internal Clock
Bit[7:6]: Data Format – HSYNC/VSYNC Polarity
00: HSYNC = NEG VSYNC = POS
01: HSYNC = NEG VSYNC = NEG
10: HSYNC = POS VSYNC = POS
11: HSYNC = POS VSYNC = POS
11 CLKRC 00
RW
Register Set
POS
NEG
Bit[5:0]: Internal Clock Pre-Scalar
• Range: [0 0000] to [F FFFF]
Common Control A
Bit[7]: SCCB – Register Reset
0: No change
1: Reset all registers to default values
Bit[6]: Output Format – Mirror Image Enable
Bit[5]: Reserved
Bit[4]: Data Format – YUV formatting
12 COMA 14 RW
0: Y U Y V Y U Y V
1: U Y V Y U Y V Y (default)
Bit[3]: Output Format – Output Channel Select A
0: YUV/YCbCr
1: RGB/Raw RGB
Bit[2]: AWB – Enable
Bit[1:0]: Reserved
Note: This function is not available on the B&W OV7141.
Common Control B
Bit[7:5]: Reserved
Bit[4]: Data Format – ITU-656 Format Enable
13 COMB A3 RW
Bit[3]: Reserved
Bit[2]: SCCB – Tri-State Enable – Y[7:0]
Bit[1]: AGC – Enable
Bit[0]: AEC – Enable
Version 1.4, March 6, 2003
Proprietary to OmniVision Technologies
11
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| PDF Descargar | [ Datasheet OV7640.PDF ] | |
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