Differential programming of two-terminal memory with program detection and multi-path disablement

Abstract

Improved differential programming of multiple two-terminal memory cells that define an identifier bit is provided. Differential programming can apply a program cycle to multiple memory cells concurrently, detect a program event for one (or a first group) of the memory cells and disconnect all of the memory cells from a program supply voltage in response to detecting the program event. Moreover, disconnecting the memory cells can be accomplished prior to a duration of the program cycle, serving to mitigate an invalid data result for the identifier bit, as well as reduce power consumption associated with the differential programming. Circuits providing intrinsic suppression of a non-programmed memory cell(s) defining an identifier bit in response to programming of another memory cell (or group of cells) defining the identifier bit are included. Differential programming can reduce power consumption and mitigate or avoid invalid data results for an identifier bit.