Patent ID: 9104539
Filing Date: 2015-08-11
Classification: G06F,G11C

Abstract:
1. A memory device comprising: a nonvolatile semiconductor memory device; a control section configured to control the nonvolatile semiconductor memory device; a memory serving as a work area connected to the control section; an extended function section to be controlled by the control section; and an extension register virtually provided on the memory or provided as hardware on the control section, the extension register being capable of defining an interface controlling an extended function of the extended function section, wherein the extension register includes a first area, and a second area different from the first area, the first area is predetermined, the first area stores first information configured to specify a type of the extended function and a controllable driver, and address information indicating a place in the second area where second information for controlling the extended function is stored, the control section is arranged to process a first command to read data from the extension register in accordance with a designation of data length, and a second command to write data to the extension register in accordance with a designation of data length.