Patent ID: 9025376
Filing Date: 2015-05-05
Classification: G11C

Abstract:
1. A method of operating a memory system, comprising: receiving a first unit of write data in a controller; determining whether the first unit of write data is to be stored in which one of a first memory area comprising single-bit memory cells and a second memory area comprising multi-bit memory cells; upon determining that the first unit of write data is to be stored in the first memory area, temporarily storing the first unit of write data from the controller to the first memory area and subsequently migrating the temporarily stored first unit of write data to the second memory area; upon determining that the first unit of write data is to be stored in the second memory area, storing the first unit of write data directly from the controller to the second memory area, and concurrently migrating a second unit of write data temporarily stored in the first memory area to the second memory area.