Systems and methods are disclosed herein to provide improved verification
of flash memory erasure. For example, in accordance with an embodiment of
the present invention, an integrated circuit includes an array of flash
memory cells. A plurality of sense amplifiers are also provided wherein
each sense amplifier is associated with a plurality of the flash memory
cells and adapted to detect a state of one of the associated flash memory
cells selected from the plurality of flash memory cells. A first logic
circuit is also provided to receive the states of the selected flash
memory cells from the sense amplifiers and perform a first logic
operation at approximately the same time on the states to verify that all
states of the selected flash memory cells correspond to an erased state.