| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-die termination device and a method for a semiconductor memory that can prevent code adjustment errors. SOLUTION: The on-die termination device for semiconductor memory includes an ODT (On Die Termination) input driving means that divides an input voltage on the basis of a resistance ratio according to a first code consisting of at least two bits and outputs a first line voltage, a first ODT control means that counts the first code or resets the first code to a first set value according to whether or not the first line voltage matches a reference voltage, an ODT output driving means that divides an input voltage on the basis of the resistance ratio according to the first code and a second code consisting of at least two bits and outputs a second line voltage, and a second ODT control means that counts the second code or resets the second code to a second set value according to whether or not the second line voltage matches the reference voltage. COPYRIGHT: (C)2007,JPO&INPIT
|
