The OV7670 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 OV2640 is a low voltage CMOS image sensor that provides the full functionality of a single-chip UXGA (1632x1232) camera and image processor in a small footprint package. This article is going to cover the differences between OV7670 and OV2640 from the perspective of description, functional block Diagram, absolute maximum ratings, features, Package specifications, and more details.