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
Dry-cooling unit with gravity-assisted coolant flow
Method and system for remotely testing a wireless device
Multi-user remote health monitoring system with biometrics support
Laser receiver for detecting a relative position
Methods of fabricating semiconductor device
Electronic system auto-mute control circuit and control method thereof
Load balancing for parallel tasks
  Randomly Featured Patents
Over-voltage protection system and electronic device using the same
Belt-attached beverage holster for bottles and cans
Shield tunnelling apparatus
Semiconductor device and manufacturing method thereof
Underground and partly submerged pipe winding apparatus and method
Optical disk for high resolution and three-dimensional video recording, optical disk reproduction apparatus and optical disk recording apparatus
Valve actuator for tire pressure management
Modular units, modular structures having modular units, and method for constructing modular structures
Electrooptical apparatus and method of manufacturing electrooptical apparatus
Image forming apparatus with an image scanning apparatus and an automatic document feeder