US 6,295,228 B1 · System for programming memory cells

Abstract

A programming control circuit programs a memory cell in accordance to a programming signal value that can be varied by a test equipment. The programming control circuit comprises a signal storage device, a signal output circuit, and a verification circuit. The signal storage device stores the programming signal value. The test equipment can be coupled to the signal storage device to write the programming signal value into the signal storage device. The signal output circuit is coupled to the signal storage device to receive the programming signal value. The signal output circuit converts the programming signal value into a programming signal and outputs the programming signal to the memory cell. The verification circuit determines whether the memory cell is successfully programmed. If the memory cell is not successfully programmed, the programming control circuit increases the programming signal value.

Claims11

Dependent claims

A programming control circuit that programs a memory cell, the control circuit comprising:

a plurality of memory cells that stores a programming signal value;
a signal output circuit that is coupled to receive the programming signal value from the plurality of memory cells and that converts the programming signal value into a programming signal and outputs the programming signal to the memory cell;
and
a verification circuit, the verification circuit determining whether the memory cell successfully programmed, wherein when the memory cell did not successfully program, the signal output circuit increases the programming signal value.

1 more element

Dependencies are inferred from the claim text.

System for programming memory cells

Life of this patent

System for programming memory cells

Life of this patent

Abstract

Claims11