The present invention provides a chip of an imaging cartridge, said imaging cartridge can install on an imaging device and the imaging cartridge chip couples with the imaging device by establishing a communication path between the imaging cartridge chip and the imaging device, the communication path comprises an address/data line and a clock signal line the imaging device conducts reading and writing operations to the imaging cartridge chip through the communication path by transmitting instructions or data via the address/data line and transmitting clock signal via the clock signal line as required by the imaging device, and the imaging cartridge chip comprises: a substrate, and an information storage section and a control section which are provided on the substrate, wherein: the information storage section comprises a prioritized writing area and a normal read-write area.