| 摘要 |
<p>PURPOSE: A read voltage generating circuit, a memory including the same, and a memory system control the levels of read voltages variously by increasing or decreasing a code value according to set counting steps. CONSTITUTION: A register (610) stores an initial read voltage code. A counter circuit increases or decreases a read voltage code at every read re-try operation by using the initial read voltage code as an initial value. A voltage generating circuit (630) generates a read voltage corresponding to the read voltage code generated at the counter circuit. [Reference numerals] (630) Voltage generating circuit; (AA) Register; (BB) Counter circuit</p> |
