| 摘要 |
An apparatus for and a method of converting an address in a semiconductor memory device sequentially performing a data write operation on addresses from an upper address, by performing a write or read operation after converting inputted logical addresses into physical addresses in a memory device by using an address converting table. As a result, an operation speed of the system is improved and power consumption is reduced. The apparatus for converting the address in the semiconductor memory device includes: an address converting unit for receiving a logical address indicating a write address, an invalid logical address indicating an address having an invalid data in a logical memory, an address renewing signal notifying renewal of a changed address map between the logical memory and a physical memory, and an address map signal updated to the physical memory, converting the received logical addresses into physical addresses, sequentially storing data in the converted physical addresses from a most significant physical address which can input data, storing the logical addresses and the physical addresses to be equalized, erasing invalid data of the logical address according to the invalid logical address, and converting the logical addresses received in a read operation into the physical addresses stored in a write operation to perform a data read operation; an address decoder unit for receiving the physical addresses from the address converting unit and an external control signal, and generating a decoded signal; and a plurality of memory block units for reading or writing data from/on a selected memory cell according to the signal from the address decoder unit. |
