| 摘要 |
A floating gate memory device that includes a column latch circuit that is isolated from a series of bitlines by PMOS pass transistors controlled by a bitline latch switch circuit. The bitline latch switch circuit selectively applies either +5 V or -2 V signals to the gate terminals of the PMOS pass transistors, thereby allowing the PMOS pass transistors to selectively pass 0 (zero) Volts during, for example, program operations. A -2 V charge pump is activated to generate the -2 V signal during operations requiring 0 Volt bitline voltages, and is turned off during all other operations.
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