US Patent 7466614 Sense amplifier for non-volatile memory

A sense amplifier comprising a sense output circuit for providing a sense output signal and a logical inverse of the sense output signal based on a sense signal of a memory circuit, a charge control circuit for providing a precharge signal based on the output of the sense output circuit and a sense enable signal, a latch control circuit for providing control of a latch circuit based on the sense signal, the precharge signal and the logical inverse of the sense output signal, wherein when the sense signal is read, the latch control circuit provides one or more predetermined signals to the latch circuit to latch the sense signal to a logical level.