Sense System for Single-Ended Application in a Static Memory
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09
The proposal concerns an approach which permits a small signal on a single-ended bit line to be very rapidly amplified. For that purpose, the bit line is charged to a potential VH-VTP which exactly matches the switching point of the bit line isolation device. The bit line is restored by a "self-timed" method such that restoring is initiated by the data output. Another characteristic is that a precharge signal invariably sets the sense amplifier to "0", thus conditioning it for switching. In multiport arrays, such as are frequently required for microprocessors, a cell must have several outputs. If double-ended bit lines were to be provided for each output, this would be highly space-consuming. To avoid this, single-ended outputs are used.