Patent ID: 11869584
Assignee: SILICON MOTION, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method for performing memory access of a Flash cell of a Flash memory, comprising:
performing a a first sensing operation to generate a first digital value and performing a plurality of second sensing operations to generate a second digital value of the Flash cell, the second digital value representing at least one candidate threshold voltage of the Flash cell;
determining a threshold voltage of the Flash cell according to whether the at least one candidate threshold voltage is high or low;
determining soft information of a bit stored in the Flash cell according to the threshold voltage of the Flash cell; and
using the soft information to perform soft decoding;
wherein when a result of the first sensing operation is that current flows through the Flash cell, the subsequent second sensing operation will correspond to a sensing voltage which is less than a sensing voltage corresponding to the first sensing operation, when a result of the first sensing operation is that current does not flow through the Flash cell, the subsequent second sensing operation will correspond to a sensing voltage which is higher than a sensing voltage corresponding to the first sensing operation.