The OV7670/OV7171 CAMERACHIPTM is a low voltage CMOS image sensor that provides the full functionality of a single-chip VGA camera and image processor in a small footprint package. The OV7670/OV7171 provides full-frame,sub-sampled or windowed 8-bit images in a wide range of formats, controlled through the Serial Camera Control Bus (SCCB) interface.This product has an image array capable of operating at up to 30 frames per second (fps) in VGA 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 (FPN),smearing, blooming, etc., to produce a clean, fully stable color image.

The camera module comes with a 9x2 header, the pin diagram is shown below:-

VDD	GND
SDIOC	SDIOD
VSYNC	HREF
PCLK	XCLK
D7	D6
D5	D4
D3	D2
D1	D0
RESET	PWDN

Pin	Type	Description
VDD**	Supply	Power supply
GND	Supply	Ground level
SDIOC	Input	SCCB clock
SDIOD	Input/Output	SCCB data
VSYNC	Output	Vertical synchronization
HREF	Output	Horizontal synchronization
PCLK	Output	Pixel clock
XCLK	Input	System clock
D0-D7	Output	Video parallel output
RESET	Input	Reset (Active low)
PWDN	Input	Power down (Active high)

Features:

High sensitivity for low-light operation
Low operating voltage for embedded portable apps
Standard SCCB interface compatible with I2C interface
Output support for Raw RGB, RGB (GRB 4:2:2, RGB565/555/444), YUV (4:2:2) and YCbCr (4:2:2) formats
Supports image sizes: VGA, CIF, and any size scaling down from CIF to 40x30
VarioPixel® method for sub-sampling
Automatic image control functions including: Automatic Exposure Control (AEC), Automatic Gain Control (AGC), Automatic White Balance (AWB), Automatic Band Filter (ABF), and Automatic Black-Level Calibration (ABLC)
Image quality controls including color saturation, hue, gamma, sharpness (edge enhancement), and anti-blooming
ISP includes noise reduction and defect correction
Supports LED and flash strobe mode
Supports scaling
Lens shading correction
Flicker (50/60 Hz) auto detection
Saturation level auto adjust (UV adjust)
Edge enhancement level auto adjust
De-noise level auto adjust