Semiconductor memory device and method for driving the same

Details Semiconductor memory device and method for driving the same Semiconductor memory device and method for driving the same

2011-01-25

2011-01-25

Phan, Trong (Department: 2827)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S211000, C365S189050, C365S189080

Reexamination Certificate

active

07876636

ABSTRACT:
A semiconductor memory device performs a refresh operation stably even while a temperature continuously changes at near a specific temperature. The semiconductor memory device includes an on die thermal sensor (ODTS) and a control signal generator. The on die thermal sensor (ODTS) outputs a thermal code corresponding to a temperature of the semiconductor memory device. The control signal generator generates a self refresh control signal in response to the thermal code, wherein a state of the self refresh control signal does not change when the temperature variation is less than a predetermined value.

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