摘要:
An improved a programmable electrical fuse device utilizing MOS oxide breakdown is described herein. The fuse device comprises a programmable MOS device having a first gate width, a reference MOS device having a second gate width that is substantially less than the first gate width, and a sense amplifier operable to detect a difference in current and generate a corresponding logical signal. According to one embodiment, the fuse device can be programmed only once to invert its logical state and thereby provide a changeable logical signal. This is done by applying an overvoltage signal to the programmable MOS device so that its oxide layer breaks down. Since the programmable MOS device and the reference MOS device are on opposite sides of the sense amplifier, an opposite logical signal is generated by shorting-out the programmable MOS device. According to another embodiment, the fuse device can be programmed and erased multiple times by breaking down oxide layers in MOS devices that are alternating sides of a sense amplifier.
摘要:
The present invention relates to a method of creating a design for a semiconductor memory. In an embodiment, a memory compiler for a semiconductor memory has access to a set of leaf cell designs for use by the memory compiler, the leaf cell designs comprising a power management circuit design as a leaf cell for a memory circuit. A user may elect to allow enablement of an ultra low power feature and the memory compiler creates a design which incorporates the power management circuit in a compiled semiconductor memory macro when the user-selectable option is enabled. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要:
The present invention relates to a method of creating a design for a semiconductor memory. In an embodiment, a memory compiler for a semiconductor memory has access to a set of leaf cell designs for use by the memory compiler, the leaf cell designs comprising a power management circuit design as a leaf cell for a memory circuit. A user may elect to allow enablement of an ultra low power feature and the memory compiler creates a design which incorporates the power management circuit in a compiled semiconductor memory macro when the user-selectable option is enabled.