Patent ID: 8769353
Filing Date: 2014-07-01
Classification: G06F,G11C

Abstract:
1. A memory device comprising: a memory cell; a command/data connector configured to connect to an external device and exchange signals including commands and data with the external device; a controller configured to exchange signals with the command/data connector, analyze a received signal, and access the memory cell to record, retrieve or modify data based on a result of the analysis; firmware located within the controller, wherein the firmware controls an operation of the controller, and wherein the firmware is configured to be set to a test mode or a user mode; and wherein the memory device is provided to be provided with power to enable the firmware to maintain the test mode regardless of whether the command/data connector is connected to the external device, wherein when the firmware receives a test command from the external device and the firmware is set to the test mode, the firmware performs a defect test on the memory cell and transmits a result of the defect test to the external device through the command/data connector.