An integrated circuit, and a data processing device and method are provided. The integrated circuit includes a processor circuit and an accelerator circuit. The processor circuit includes a processor, a first data storage section, and a first data input/output interface. The accelerator circuit includes an accelerator and a second data input/output interface. The second data input/output interface is electrically connected to the first data input/output interface, so that the accelerator circuit can perform information interaction with the first data storage section.