DISTRIBUTED CASCODE CURRENT SOURCE FOR RRAM SET CURRENT LIMITATION

摘要

In one example, a current limited device is coupled between a source line of a memory cell array and a supply voltage, and configured to operate in a constant current mode during an access operation of a memory cell. An array control circuitry may be coupled to the memory cell array, and configured to control the constant current mode and supply an associated select bias voltage to the word line select transistor.

主权项

1. An apparatus, comprising:
a memory cell array, wherein:
a memory element of a memory cell of the memory cell array is coupled to a source line of the memory cell array through a word line select transistor; anda current limiting device is coupled between the source line and a supply voltage, the current limiting device to operate in a constant current mode during an access operation of the memory cell; and an array control circuitry coupled to the memory cell array, the array control circuitry configured to control the constant current mode and supply an associated select bias voltage to the word line select transistor.