Unclassified The OV7670 camera module is a CMOS image sensor that provides full-frame windowed 8-bit images in a wide range of image formats.
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Oct 10, 2021
Alma Black
OV7670 Camera Module with Arduino: Color Image To PC (Step-By-Step Guide)
Unclassified
The OV7670 camera module is a CMOS image sensor that provides full-frame windowed 8-bit images in a wide range of image formats. This article mainly covers datasheet, specifications, pinout, applications, and more details about the OV7670 camera module. Furthermore, there is a huge range of semiconductors, capacitors, resistors, and ICs in stock. Welcome your RFQ!
OV7670 Camera Board (B)
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.
| Pin Number | Pin Type | Description |
| 1 | VCC | '+3.3V DC power input |
| 2 | GND | Ground |
| 3 | SCL | I2C Serial Clock |
| 4 | SDA | I2C Serial Data I/O |
| 5 | VSYNK | Vertical Sync output; Active High; Indicates active frames |
| 6 | HREF | Horizontal Reference; Active High; Indicates active pixels |
| 7 | PCLK | Pixel clock output from the sensor |
| 8 | XCLK | Master clock into the sensor |
| 9 | Dout9 | Pixel Data Outuput 9(MSB) |
| 10 | Dout8 | Pixel Data Output 8 |
| 11 | Dout7 | Pixel Data Output 7 |
| 12 | Dout6 | Pixel Data Output 6 |
| 13 | Dout5 | Pixel Data Output 5 |
| 14 | Dout4 | Pixel Data Output 4 |
| 15 | Dout3 | Pixel Data Output 3 |
| 16 | Dout2 | Pixel Data Outuput 2(LSB) |
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.
Waveshare OV7670 Camera Board (B) technical specifications, attributes, parameters and parts with similar specifications to Waveshare OV7670 Camera Board (B).
| Product Attribute | Attribute Value | |
|---|---|---|
| Packaging | Bag-packed |
| Product Attribute | Attribute Value | |
|---|---|---|
| RoHS Status | RoHS Compliant |
| Product Attribute | Attribute Value |
|---|
Cellular phone
Facial Recognition
Document scanning
Surveillance systems
Obstacle avoidance
OV7675, OV2640, OV7725, OV5642, OV5647
| Key Specs | OV2640 | OV7670 |
| Array Size | 1600 x 1200 (UXGA) | 640 x 480 (VGA) |
| Power Supply | Core: 1.3V DC ± 5% Analog: 2.5~3.0V DC I/O: 1.7V to 3.3V | Core: 1.8V DC ± 10% Analog: 2.45~3.0V DC I/O: 1.7V to 3.0V |
| Power Consumption | Free running: 125mW Standby:600μA | Free running: 60mW Standby: < 20μA |
| Image Sensor Format | Type 1/4″ | Type 1/6″ |
| Maximum Image Transfer Rate | 1600× 1200@15fps, SVGA@30fps, CIF@60fps | VGA@30fps |
| Sensitivity | 0.6V/Lux-sec | 1.3V/Lux-sec |
| S/N ratio | 40dB | 46dB |
| Dynamic Range | 50dB | 52dB |
| Pixel Size | 2.2 x 2.2 μm | 3.6 x 3.6 μm |
| Output Format | YUV/RGB/Raw RGB Data/MJPEG | YUV/RGB/GRB/Raw RGB Data |
| Shutter Type | Rolling Shutter | Rolling Shutter |
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.
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.
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