SEMICONDUCTOR INTEGRATED CIRCUIT, SYSTEM DEVICE INCLUDING SEMICONDUCTOR INTEGRATED CIRCUIT, AND SEMICONDUCTOR INTEGRATED CIRCUIT CONTROL METHOD

摘要

A disclosed semiconductor integrated circuit interfaces an external circuit and a host for controlling the external circuit and obtains data used to interface the external circuit and the host from a rewritable external memory. The disclosed semiconductor integrated circuit includes external terminals to which an external signal line group is connected, the external signal line group including signal lines connecting the external circuit and the external memory in parallel; an external terminal interface circuit configured to interface the semiconductor integrated circuit and the external circuit or the external memory connected via the external signal line group; and a control circuit configured to activate or deactivate the external circuit and the external memory. The control circuit is configured to activate either the external circuit or the external memory that is to be accessed via the external terminal interface circuit.