Resources Contact Us Home
Programmable refresh circuits and methods for integrated circuit memory devices

Image Number 14 for United States Patent #5812475.

A self refresh circuit for an integrated circuit memory device includes a programmable refresh circuit, a plurality of counters, and a refresh cycle selection circuit. The programmable refresh circuit can be electrically programmed to generate one of a plurality of refresh control signals. A first one of the counters generates a first oscillating output signal having a first predetermined period and each successive counter generates a respective oscillating output signal having a respective period twice that of a respective preceding counter. The refresh cycle selection circuit selects a self refresh cycle from one of the oscillating output signals in response to the refresh control signal generated by the at least one programmable refresh circuit. Related methods are also disclosed.

  Recently Added Patents
Profile-based user access to a network management system
Compositions and methods for concentrating and depleting microorganisms
Systems of an electronic device and methods for manufacturing the same
Method and apparatus for determining storage capacity error for a data storage device
Visualization of information associated with applications in user interfaces
Molded surface of a concrete product
Method of preparing highly fluorinated carboxylic acids and their salts
  Randomly Featured Patents
Composition and method for improved carbohydrate management in mammals
Use of detector arrays to detect cessation of motion
Changing mode in digital broadcast receiver
Integral laser head and power supply
Multi-bank clock synchronous type semiconductor memory device having improved memory array and power supply arrangement
Measuring cup
Thermoplastic rubber obtention method
Power tool with a clamping device for axially securing a disk shaped tool
Method of issuing a ticket paid for by illegal payment means, and a vending machine and ticket reader for implementing the method
Apparatus for manipulating empty and filled trays for cigarettes and like rod-shaped articles between making and processing machines