Programming a memory with varying bits per cell

摘要

Memory devices (301, 301') adapted to receive and transmit analog data signals (320, 35) representative of two or more bits, such as to facilitate increases in data transfer rates relative to devices communicating data signals indicative of individual bits. A controller (310) and a read/write channel (305) convert the digital bit patterns to analog data signals to be stored in a memory array at a particular bit capacity level in order to achieve a desired level of reliability. (Fig. 3)