US 11,899,954 B2 · Memory with extension mode

Abstract

A memory system includes a main memory, an auxiliary memory, a redundancy circuit, an extension control terminal, and a multiplexer. The main memory has a line width, and includes a write data input. The auxiliary memory has the same line width as the main memory, and includes a write data input. The redundancy circuit includes and input and an output. The input is coupled to the write data input of the main memory. The multiplexer includes a first input, a second input, a control input, and an output. The first input is coupled to the write data input of the main memory. The second input is coupled to the output of the redundancy circuit. The control input is coupled to the extension control terminal. The output of the multiplexer is coupled to the write data input of the auxiliary memory.

Claims20

Dependent claims

A memory system, comprising:

a main memory having a line width, and including a write data input;
an auxiliary memory having the line width, and including a write data input;
a redundancy circuit including:
an input coupled to the write data input of the main memory;
and
an output;
an extension control terminal;
and
a multiplexer including:
a first input coupled to the write data input of the main memory;
a second input coupled to the output of the redundancy circuit;
a control input coupled to the extension control terminal;
and
an output coupled to the write data input of the auxiliary memory.

11 more elements

Dependencies are inferred from the claim text.

Memory with extension mode

Life of this patent

Memory with extension mode

Life of this patent

Abstract

Claims20