Patent ID: 7788454
Filing Date: 2010-08-31
Classification: G06F

Abstract:
1. A controller connectable to an external memory, the controller comprising: a microcomputer provided with a sleep mode; an electrically rewritable internal nonvolatile memory for storing an operation program executed by the microcomputer to control a predetermined operation; an internal interface for controlling input to the internal nonvolatile memory and output from the internal nonvolatile memory; an external interface for controlling input to the external memory and output from the external memory; a download circuit connected between the external interface and the internal interface, for alternately reading data of an operation program stored in the external memory in a predetermined address unit via the external interface and writing the read data of the operation program to the internal nonvolatile memory in the predetermined address unit via the internal interface, in accordance with an external signal; and a package configured to integrate the microcomputer, the electrically rewritable internal nonvolatile memory, the internal interface, the external interface and the download circuit, the package configured to receive the external signal supplied from outside the package, wherein in response to the external signal, the download circuit generates a control signal