Wordline voltage transfer apparatus, systems, and methods
AssigneeMicron Technology, Inc.
InventorsXiaojun Yu, Jin-man Han
Life of this patent
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Abstract
The apparatus and systems described herein may comprise a plurality of memory cells coupled to a local wordline, and a wordline drive circuit that includes a regulator coupled to a plurality of pass transistors and a string driver. The regulator may comprise a regulator transistor having a threshold voltage that is substantially the same as the threshold voltage of the string driver during memory cell program operations. In some embodiments, the regulator may comprise a cascode-connected pair of transistors. Methods of manufacturing and operating the apparatus and systems are also described.
Claims20
A semiconductor memory comprising:
- a semiconductor memory package;
- and
- a substrate disposed within the semiconductor memory package, the substrate comprising a plurality of memory cells coupled to a local wordline and a wordline drive circuit including a regulator coupled to a plurality of pass transistors and a string driver, wherein the regulator comprises a regulator transistor having a threshold voltage (Vt) substantially the same as a threshold voltage (Vt) of the string driver during program operations associated with the plurality of memory cells.
A semiconductor memory comprising:
- a plurality of memory cells coupled to a local wordline;
- and
- a wordline drive circuit coupled to the local wordline, wherein the wordline drive circuit comprises a regulator having a cascode-connected pair of transistors coupled to a plurality of pass transistors and a string driver.
Dependencies are inferred from the claim text.