Patent ID: 9543032
Date: 2017-01-10
CPC Classifications: G11C

Claim:
1. A memory system, comprising: at least one nonvolatile memory device; a memory controller configured to control the at least one nonvolatile memory device; and a power supply configured to supply a supply voltage and a high voltage as externally supplied voltages to the at least one nonvolatile memory device, the high voltage being higher than the supply voltage, wherein the at least one nonvolatile memory device receives the supply voltage from the power supply and generates a first high voltage from the received supply voltage, and receives the high voltage from the power supply and generates a second high voltage from the high voltage, the first and second high voltages for operations being controlled by the memory controller, wherein first high voltage and the second high voltage are applied to word lines of the at least one nonvolatile memory device during a programming operation.