Patent ID: 9570119
Date: 2017-02-14
CPC Classifications: G06F,G11C,Y02D

Claim:
1. A method for controlling termination impedance of a data terminal in a dynamic random access memory device, said method comprising: receiving a mode register set command to set an operation mode to a first mode; setting the operation mode in a mode register to the first mode; receiving a self-refresh entry command; entering self-refresh mode; wherein the self-refresh entry command is received through a command terminal and a clock enable terminal; activating a first input buffer connected to a termination impedance control terminal; and receiving an impedance control signal at the first input buffer, wherein the termination impedance of the data terminal is set to a first impedance value if the termination impedance control signal has a first level and the termination impedance of the data terminal is set to a second impedance value if the termination impedance control signal has a second level.