OV7670 Camera Module: Datasheet, Specifications and Comparison

The CMOS OV7670 camera module is one kind of CMOS image sensor available in low voltage, high sensitivity, and small size. This module provides the complete single-chip VGA camera functionality & an image processor within a tiny footprint package.

OV7670 Pinout

The functional block diagram of the OV7670 camera module mainly includes A/D converters, timing generators, DSP, array of image sensors, test pattern generators, digital video port for image scalar, LEDs & strobe flash control o/p.

OV7670 Functional Block Diagram 

• 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 include 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

• Photosensitive Array: 640 x 480.

• IO Voltage: 2.5V to 3.0V.

• Operating Power: 60mW/15fpsVGAYUV.

• Sleeping Mode: <20μA.

• Operating Temperature: -30 to 70 deg C.

• Output Format: YUV/YCbCr4:2:2 RGB565/555/444 GRB4:2:2 Raw RGB Data (8 digit).

• Lens Size: 1/6″.

• Vision Angle: 25 degrees.

• Max. Frame Rate: 30fps VGA.

• Sensitivity: 1.3V / (Lux-sec).

• Signal to Noise Ratio: 46 dB.

• dynamic range: 52 dB.

• Browse Mode: By row.

• Electronic Exposure: 1 to 510 row.

• Pixel Coverage: 3.6μm x 3.6μm.

• Duck Current: 12 mV/s at 60℃.

• PCB Size (L x W): Approx. 1.4 x 1.4 inch / 3.5 x 3.5 cm.

• Cellular phone

• Facial Recognition

• Document scanning

• Surveillance systems

• Obstacle avoidance

OV7675, OV2640, OV7725, OV5642, OV5647

Arducam HQ, IMX219

The following diagram shows how to connect a CMOS OV7670 camera module to an Arduino Uno. This module primarily contains serial data and a CLK pin, indicating that the Arduino UNO board can communicate with the camera module through I2C. Furthermore, it operates at 3.3 V, so if we want to use the Arduino board to send data to the CMOS camera module, we'll need to use a voltage divider to lower the voltage.

OV7670 Camera Module Circuit

It's important to note that the microcontroller has no effective method for displaying the collected image. It simply instructs the module to take a picture, acquire the image, and then transmit the image to a computer using the Arduino's USB port. As a result, you'll need a different application to display the image from the USB port on your computer. The required code is used to take a picture with the OV7670 camera module and Arduino in this example.

After that, we'll need a desktop application that will analyze the data from the Arduino's USB connection and display it on the monitor.

OV7670 Dimensions

OmniVision is a leading-edge imaging solution. Form the core of systems that produce high quality still and video images from smartphones, surveillance cameras, endoscopes, webcams, automotive cameras, and more.