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
Touch screen panel
Transmitting a synchronizing signal in a packet network
Embedded package and method for manufacturing the same
Video stabilization
Metal colloidal particles, metal colloid and use of metal colloid
Image forming apparatus and system connectable with an authorization apparatus via a communications network, the image forming apparatus comprising an apparatus control section, an initial inq
Hard disk drives having different rotational speeds
  Randomly Featured Patents
Cooking device with a fan and a water supply
Memory-efficient leaky bucket policer for traffic management of asynchronous transfer mode data communications
Trunk lid
Semiconductor device, ball grid array connection system, and method of making
Charge coupled device for a solid state image pick-up device
Method of making nonvolatile semiconductor memory
Gravity feed hot top tool
Multi-phase selective mass transfer through a membrane
Overload relay
Method for recording potential capacity of a formed foil in a continuous foil forming process