Patent ID: 8854856
Filing Date: 2014-10-07
Classification: G11C,H01L

Abstract:
1. A method for programming a read only memory (ROM) device, comprising: providing an input sequence of first digits and second digits; providing a sequence of storage cells, wherein a storage cell stores a digit of the input sequence to an active state or an inactive state of the storage cell; dividing the input sequence into a first kind of groups of the input sequence and a second kind of groups of the input sequence, wherein a first kind of group of the input sequence comprises a plurality of consecutive first digits, two first kind of groups of the input sequence are separated by a second kind of group of the input sequence, the second kind of group of the input sequence comprises consecutive digits without any consecutive first digits, and the second kind of group of the input sequence has a starting digit which is the second digit; and programming a starting storage cell to the active state to store the starting digit of the second kind of group of the input sequence.