Patent ID: 6563753
Filing Date: 2003-05-13
Classification: G11C

Abstract:
A sensing circuit having independent write-back capability comprising:a sense amplifier that compares an input signal to a reference signal and generates an output signal, the sense amplifier including, a p-channel transistor having a source connected to power and first drain, a first and a second leg, each leg connected to the drain of the p-channel transistor and ground, each leg further including, a first p-channel transistor having a source connected to the first drain, a second p-channel transistor having a source connected to the drain of the first p-channel transistor at a first node, two n-channel transistors, connected in parallel, having their drains connected to the drain of the second p-channel transistor at a second node and their sources connected to ground, a third n-channel transistor, serially connected to the gate of the first p-channel transistor, and for each leg, the second node connects to the gates of the second p-channel transistor and one of the two n-channel transistors of the other leg, and a first n-channel transistor, connected across the first nodes of the first and second legs; a tri-stable write-back block having an enable signal and a write-back output signal that coupled to the output signal of the sense amplifier; and a data buffer receiving the output signal of the sense amplifier.