Wordline enable circuit in semiconductor memory device and method thereof
First Claim
1. A semiconductor memory device for activating plural wordlines, comprising:
- a wordline control signal generating unit for outputting an untoggled wordline control signal based on a wordline select check signal, a self-refresh mode signal and a toggled wordline control signal while a unit wordline block is enabled in a self-refresh mode;
a wordline enable signal generating unit for generating a wordline enable control signal, controlled by the untoggled wordline control signal and a toggled address signal, and a first to an n-th wordline enable power supply signals, controlled by the toggled wordline control signal and each address signal; and
a wordline block enable unit for enabling each wordline, controlled by the wordline enable control signal and the first to the n-th wordline enable power supply signals.
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Accused Products
Abstract
There is provided a wordline enable circuit and its method for reducing power consumption by controlling a wordline select signal in a self-refresh mode. The wordline enable circuit includes a wordline control signal generating unit for outputting an untoggled wordline control signal while a unit wordline block is enabled in a self-refresh mode; a wordline enable signal generating unit for generating a wordline enable control signal, controlled by the untoggled wordline control signal and a toggled address signal, and a first to an n-th wordline enable power supply signals; and a wordline block enable unit for enabling each wordline, controlled by the wordline enable control signal and the first to the n-th wordline enable power supply signals.
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Citations
10 Claims
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1. A semiconductor memory device for activating plural wordlines, comprising:
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a wordline control signal generating unit for outputting an untoggled wordline control signal based on a wordline select check signal, a self-refresh mode signal and a toggled wordline control signal while a unit wordline block is enabled in a self-refresh mode; a wordline enable signal generating unit for generating a wordline enable control signal, controlled by the untoggled wordline control signal and a toggled address signal, and a first to an n-th wordline enable power supply signals, controlled by the toggled wordline control signal and each address signal; and a wordline block enable unit for enabling each wordline, controlled by the wordline enable control signal and the first to the n-th wordline enable power supply signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for enabling a wordline, the method comprising the steps of:
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a) outputting an untoggled wordline control signal by using a wordline select check signal, a self-refresh mode signal and a toggled wordline control signal while a unit wordline block is enabled; b) generating a wordline enable control signal based on the untoggled wordline control signal and a toggled address signal, and outputting a first to an n-th wordline enable power supply signals based on the toggled wordline control signal and each address signal; and c) enabling each wordline in sequence, controlled by the wordline enable control signal and the first to the n-th wordline enable power supply signals. - View Dependent Claims (9, 10)
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Specification