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Bootstrap Array Cell Disclosure Number: IPCOM000042067D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03

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Lewis, SC [+details]


The bootstrap array cell described below allows a 10-volt differential between a "1" and a "0" to be stored in a 5-volt design which also eliminates dummy half cells. The bootstrap array cell appears very similar to several others in structure. The exact structure and operation, however, provide several unique advantages. The cell is operated so that in standby the plate and the bit line are at 5 volts and the word line is at ground. The source node A in Fig. 1 is either at 0 volts or at +10 volts with respect to ground. The voltage across the storage capacitor, therefore, is either +5 volts or -5 volts. As in most 5-volt designs the word line is bootstrapped to about 1.6 x VH (approximately 8 volts). Thus, the bit line is either discharged by a "0" or charged by a "1".